[PATCH] clk: stm32h7: Add stm32h743 clock driver

From: gabriel.fernandez
Date: Wed Mar 15 2017 - 05:25:18 EST

From: Gabriel Fernandez <gabriel.fernandez@xxxxxx>

This patch enables clocks for STM32H743 boards.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@xxxxxx>
---
.../devicetree/bindings/clock/st,stm32h7-rcc.txt | 152 ++
drivers/clk/Makefile | 1 +
drivers/clk/clk-stm32h7.c | 1586 ++++++++++++++++++++
include/dt-bindings/clock/stm32h7-clks.h | 165 ++
include/dt-bindings/mfd/stm32h7-rcc.h | 138 ++
5 files changed, 2042 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
create mode 100644 drivers/clk/clk-stm32h7.c
create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h

diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
new file mode 100644
index 0000000..9d4b587
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
@@ -0,0 +1,152 @@
+STMicroelectronics STM32H7 Reset and Clock Controller
+=====================================================
+
+The RCC IP is both a reset and a clock controller.
+
+Please refer to clock-bindings.txt for common clock controller binding usage.
+Please also refer to reset.txt for common reset controller binding usage.
+
+Required properties:
+- compatible: Should be:
+ "st,stm32h743-rcc"
+
+- reg: should be register base and length as documented in the
+ datasheet
+
+- #reset-cells: 1, see below
+
+- #clock-cells : from common clock binding; shall be set to 1
+
+- clocks: External oscillator clock phandle
+ - high speed external clock signal (HSE)
+ - low speed external clock signal (LSE)
+ - external I2S clock (I2S_CKIN)
+
+- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
+ write protection (RTC clock).
+
+- pll x node: Allow to register a pll with specific parameters.
+ Please see PLL section below.
+
+Example:
+
+ rcc: rcc@58024400 {
+ #reset-cells = <1>;
+ #clock-cells = <2>
+ compatible = "st,stm32h743-rcc", "st,stm32-rcc";
+ reg = <0x58024400 0x400>;
+ clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
+
+ st,syscfg = <&pwrcfg>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ vco1@58024430 {
+ #clock-cells = <0>;
+ compatible = "stm32,pll";
+ reg = <0>;
+ };
+
+ vco2@58024438 {
+ #clock-cells = <0>;
+ compatible = "stm32,pll";
+ reg = <1>;
+ st,clock-div = <2>;
+ st,clock-mult = <40>;
+ st,frac-status = <0>;
+ st,frac = <0>;
+ st,vcosel = <1>;
+ st,pllrge = <2>;
+ };
+ };
+
+
+STM32H7 PLL
+-----------
+
+The VCO of STM32 PLL could be reprensented like this:
+
+ Vref --------- --------
+ ---->| / DIVM |---->| x DIVN | ------> VCO
+ --------- --------
+ ^
+ |
+ -------
+ | FRACN |
+ -------
+
+When the PLL is configured in integer mode:
+- VCO = ( Vref / DIVM ) * DIVN
+
+When the PLL is configured in fractional mode:
+- VCO = ( Vref / DIVM ) * ( DIVN + FRACN / 2^13)
+
+
+Required properties for pll node:
+- compatible: Should be:
+ "stm32,pll"
+
+- #clock-cells: from common clock binding; shall be set to 0
+- reg: Should be the pll number.
+
+Optional properties:
+- st,clock-div: DIVM division factor : <1..63>
+- st,clock-mult: DIVN multiplication factor : <4..512>
+
+- st,frac-status:
+ - 0 Pll is configured in integer mode
+ - 1 Pll is configure in fractional mode
+
+- st,frac: Fractional part of the multiplication factor : <0..8191>
+
+- st,vcosel: VCO selection
+ - 0: Wide VCO range:192 to 836 MHz
+ - 1: Medium VCO range:150 to 420 MHz
+
+- st,pllrge: PLL input frequency range
+ - 0: The PLL input (Vref / DIVM) clock range frequency is between 1 and 2 MHz
+ - 1: The PLL input (Vref / DIVM) clock range frequency is between 2 and 4 MHz
+ - 2: The PLL input (Vref / DIVM) clock range frequency is between 4 and 8 MHz
+ - 3: The PLL input (Vref / DIVM) clock range frequency is between 8 and 16 MHz
+
+
+The peripheral clock consumer should specify the desired clock by
+having the clock ID in its "clocks" phandle cell.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/stm32h7-clks.h header and can be used in device
+tree sources.
+
+Example:
+
+ timer5: timer@40000c00 {
+ compatible = "st,stm32-timer";
+ reg = <0x40000c00 0x400>;
+ interrupts = <50>;
+ clocks = <&rcc TIM5_CK>;
+
+ };
+
+Specifying softreset control of devices
+=======================================
+
+Device nodes should specify the reset channel required in their "resets"
+property, containing a phandle to the reset device node and an index specifying
+which channel to use.
+The index is the bit number within the RCC registers bank, starting from RCC
+base address.
+It is calculated as: index = register_offset / 4 * 32 + bit_offset.
+Where bit_offset is the bit offset within the register.
+
+For example, for CRC reset:
+ crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
+
+All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
+header and can be used in device tree sources.
+
+example:
+
+ timer2 {
+ resets = <&rcc STM32H7_APB1L_RESET(TIM2)>;
+ };
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 92c12b8..734aa02 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -42,6 +42,7 @@ obj-$(CONFIG_COMMON_CLK_SI5351) += clk-si5351.o
obj-$(CONFIG_COMMON_CLK_SI514) += clk-si514.o
obj-$(CONFIG_COMMON_CLK_SI570) += clk-si570.o
obj-$(CONFIG_ARCH_STM32) += clk-stm32f4.o
+obj-$(CONFIG_ARCH_STM32) += clk-stm32h7.o
obj-$(CONFIG_ARCH_TANGO) += clk-tango4.o
obj-$(CONFIG_CLK_TWL6040) += clk-twl6040.o
obj-$(CONFIG_ARCH_U300) += clk-u300.o
diff --git a/drivers/clk/clk-stm32h7.c b/drivers/clk/clk-stm32h7.c
new file mode 100644
index 0000000..c8eb729
--- /dev/null
+++ b/drivers/clk/clk-stm32h7.c
@@ -0,0 +1,1586 @@
+/*
+ * Copyright (C) Gabriel Fernandez 2017
+ * Author: Gabriel Fernandez <gabriel.fernandez@xxxxxx>
+ *
+ * License terms: GPL V2.0.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/stm32h7-clks.h>
+
+/* Reset Clock Control Registers */
+#define RCC_CR 0x00
+#define RCC_CFGR 0x10
+#define RCC_D1CFGR 0x18
+#define RCC_D2CFGR 0x1C
+#define RCC_D3CFGR 0x20
+#define RCC_PLLCKSELR 0x28
+#define RCC_PLLCFGR 0x2C
+#define RCC_PLL1DIVR 0x30
+#define RCC_PLL1FRACR 0x34
+#define RCC_PLL2DIVR 0x38
+#define RCC_PLL2FRACR 0x3C
+#define RCC_PLL3DIVR 0x40
+#define RCC_PLL3FRACR 0x44
+#define RCC_D1CCIPR 0x4C
+#define RCC_D2CCIP1R 0x50
+#define RCC_D2CCIP2R 0x54
+#define RCC_D3CCIPR 0x58
+#define RCC_BDCR 0x70
+#define RCC_CSR 0x74
+#define RCC_AHB3ENR 0xD4
+#define RCC_AHB1ENR 0xD8
+#define RCC_AHB2ENR 0xDC
+#define RCC_AHB4ENR 0xE0
+#define RCC_APB3ENR 0xE4
+#define RCC_APB1LENR 0xE8
+#define RCC_APB1HENR 0xEC
+#define RCC_APB2ENR 0xF0
+#define RCC_APB4ENR 0xF4
+
+static DEFINE_SPINLOCK(rlock);
+
+static void __iomem *base;
+static struct regmap *pdrm;
+static struct clk_hw **hws;
+
+/* System clock parent */
+static const char * const sys_src[] = {
+ "hsi_ck", "csi_ck", "hse_ck", "pll1_p" };
+
+static const char * const tracein_src[] = {
+ "hsi_ck", "csi_ck", "hse_ck", "pll1_r" };
+
+static const char * const per_src[] = {
+ "hsi_ker", "csi_ker", "hse_ck", "disabled" };
+
+static const char * const pll_src[] = {
+ "hsi_ck", "csi_ck", "hse_ck", "no clock" };
+
+static const char * const sdmmc_src[] = { "pll1_q", "pll2_r" };
+
+static const char * const dsi_src[] = { "ck_dsi_phy", "pll2_q" };
+
+static const char * const qspi_src[] = {
+ "hclk", "pll1_q", "pll2_r", "per_ck" };
+
+static const char * const fmc_src[] = {
+ "hclk", "pll1_q", "pll2_r", "per_ck" };
+
+/* Kernel clock parent */
+static const char * const swp_src[] = { "pclk1", "hsi_ker" };
+
+static const char * const fdcan_src[] = { "hse_ck", "pll1_q", "pll2_q" };
+
+static const char * const dfsdm1_src[] = { "pclk2", "sys_ck" };
+
+static const char * const spdifrx_src[] = {
+ "pll1_q", "pll2_r", "pll3_r", "hsi_ker" };
+
+static const char *spi_src1[5] = {
+ "pll1_q", "pll2_p", "pll3_p", NULL, "per_ck" };
+
+static const char * const spi_src2[] = {
+ "pclk2", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "hse_ck" };
+
+static const char * const spi_src3[] = {
+ "pclk4", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "hse_ck" };
+
+static const char * const lptim_src1[] = {
+ "pclk1", "pll2_p", "pll3_r", "lse_ck", "lsi_ck", "per_ck" };
+
+static const char * const lptim_src2[] = {
+ "pclk4", "pll2_p", "pll3_r", "lse_ck", "lsi_ck", "per_ck" };
+
+static const char * const cec_src[] = {"lse_ck", "lsi_ck", "csi_ker_div122" };
+
+static const char * const usbotg_src[] = {"pll1_q", "pll3_q", "rc48_ck" };
+
+/* i2c 1,2,3 src */
+static const char * const i2c_src1[] = {
+ "pclk1", "pll3_r", "hsi_ker", "csi_ker" };
+
+static const char * const i2c_src2[] = {
+ "pclk4", "pll3_r", "hsi_ker", "csi_ker" };
+
+static const char * const rng_src[] = {
+ "rc48_ck", "pll1_q", "lse_ck", "lsi_ck" };
+
+/* usart 1,6 src */
+static const char * const usart_src1[] = {
+ "pclk2", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "lse_ck" };
+
+/* usart 2,3,4,5,7,8 src */
+static const char * const usart_src2[] = {
+ "pclk1", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "lse_ck" };
+
+static const char *sai_src[5] = {
+ "pll1_q", "pll2_p", "pll3_p", NULL, "per_ck" };
+
+static const char * const adc_src[] = { "pll2_p", "pll3_r", "per_ck" };
+
+/* lptim 2,3,4,5 src */
+static const char * const lpuart1_src[] = {
+ "pclk3", "pll2_q", "pll3_q", "csi_ker", "lse_ck" };
+
+static const char * const hrtim_src[] = { "tim2_ker", "d1cpre" };
+
+/* RTC clock parent */
+static const char * const rtc_src[] = { "off", "lse_ck", "lsi_ck", "hse_1M" };
+
+/* Micro-controller output clock parent */
+static const char * const mco_src1[] = {
+ "hsi_ck", "lse_ck", "hse_ck", "pll1_q", "rc48_ck" };
+
+static const char * const mco_src2[] = {
+ "sys_ck", "pll2_p", "hse_ck", "pll1_p", "csi", "lsi_ck" };
+
+/* LCD clock */
+static const char * const ltdc_src[] = {"pll3_r"};
+
+/* Power domain helper */
+static inline void disable_power_domain_write_protection(void)
+{
+ if (pdrm)
+ regmap_update_bits(pdrm, 0x00, (1 << 8), (1 << 8));
+}
+
+static inline void enable_power_domain_write_protection(void)
+{
+ if (pdrm)
+ regmap_update_bits(pdrm, 0x00, (1 << 8), (0 << 8));
+}
+
+static inline int is_enable_power_domain_write_protection(void)
+{
+ if (pdrm) {
+ u32 val;
+
+ regmap_read(pdrm, 0x00, &val);
+
+ return !(val & 0x100);
+ }
+ return -1;
+}
+
+/* Gate clock with ready bit and backup domain management */
+struct stm32_ready_gate {
+ struct clk_gate gate;
+ u8 bit_rdy;
+ u8 backup_domain;
+};
+
+#define to_ready_gate_clk(_rgate) container_of(_rgate, struct stm32_ready_gate,\
+ gate)
+
+#define RGATE_TIMEOUT 10000
+
+static int ready_gate_clk_is_enabled(struct clk_hw *hw)
+{
+ return clk_gate_ops.is_enabled(hw);
+}
+
+static int ready_gate_clk_enable(struct clk_hw *hw)
+{
+ struct clk_gate *gate = to_clk_gate(hw);
+ struct stm32_ready_gate *rgate = to_ready_gate_clk(gate);
+ int dbp_status;
+ int bit_status;
+ unsigned int timeout = RGATE_TIMEOUT;
+
+ if (clk_gate_ops.is_enabled(hw))
+ return 0;
+
+ dbp_status = is_enable_power_domain_write_protection();
+
+ if (rgate->backup_domain && dbp_status)
+ disable_power_domain_write_protection();
+
+ clk_gate_ops.enable(hw);
+
+ do {
+ bit_status = !(readl(gate->reg) & BIT(rgate->bit_rdy));
+
+ if (bit_status)
+ udelay(100);
+
+ } while (bit_status && --timeout);
+
+ if (rgate->backup_domain && dbp_status)
+ enable_power_domain_write_protection();
+
+ return bit_status;
+}
+
+static void ready_gate_clk_disable(struct clk_hw *hw)
+{
+ clk_gate_ops.disable(hw);
+}
+
+static const struct clk_ops ready_gate_clk_ops = {
+ .enable = ready_gate_clk_enable,
+ .disable = ready_gate_clk_disable,
+ .is_enabled = ready_gate_clk_is_enabled,
+};
+
+static struct clk_hw *clk_register_ready_gate(struct device *dev,
+ const char *name, const char *parent_name,
+ void __iomem *reg, u8 bit_idx, u8 bit_rdy,
+ u8 backup_domain, unsigned long flags, spinlock_t *lock)
+{
+ struct stm32_ready_gate *rgate;
+ struct clk_init_data init = { NULL };
+ struct clk_hw *hw;
+ int ret;
+
+ rgate = kzalloc(sizeof(*rgate), GFP_KERNEL);
+ if (!rgate)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = &ready_gate_clk_ops;
+ init.flags = flags;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ rgate->bit_rdy = bit_rdy;
+ rgate->backup_domain = backup_domain;
+
+ rgate->gate.lock = lock;
+ rgate->gate.reg = reg;
+ rgate->gate.bit_idx = bit_idx;
+ rgate->gate.hw.init = &init;
+
+ hw = &rgate->gate.hw;
+ ret = clk_hw_register(dev, hw);
+ if (ret) {
+ kfree(rgate);
+ hw = ERR_PTR(ret);
+ }
+
+ return hw;
+}
+
+struct gate_cfg {
+ u32 offset;
+ u8 bit_idx;
+};
+
+struct muxdiv_cfg {
+ u32 offset;
+ u8 shift;
+ u8 width;
+};
+
+struct composite_clk_cfg {
+ struct gate_cfg *gate;
+ struct muxdiv_cfg *mux;
+ struct muxdiv_cfg *div;
+ const char *name;
+ const char * const *parent_name;
+ int num_parents;
+ u32 flags;
+};
+
+struct composite_clk_gcfg_t {
+ u8 flags;
+ const struct clk_ops *ops;
+};
+
+/*
+ * General config definition of a composite clock (only clock diviser for rate)
+ */
+struct composite_clk_gcfg {
+ struct composite_clk_gcfg_t *mux;
+ struct composite_clk_gcfg_t *div;
+ struct composite_clk_gcfg_t *gate;
+};
+
+#define M_CFG_MUX(_mux_ops, _mux_flags)\
+ .mux = &(struct composite_clk_gcfg_t) { _mux_flags, _mux_ops}
+
+#define M_CFG_DIV(_rate_ops, _rate_flags)\
+ .div = &(struct composite_clk_gcfg_t) {_rate_flags, _rate_ops}
+
+#define M_CFG_GATE(_gate_ops, _gate_flags)\
+ .gate = &(struct composite_clk_gcfg_t) { _gate_flags, _gate_ops}
+
+static struct clk_mux *_get_cmux(void __iomem *reg, u8 shift, u8 width,
+ u32 flags, spinlock_t *lock)
+{
+ struct clk_mux *mux;
+
+ mux = kzalloc(sizeof(*mux), GFP_KERNEL);
+ if (!mux)
+ return ERR_PTR(-ENOMEM);
+
+ mux->reg = reg;
+ mux->shift = shift;
+ mux->mask = (1 << width) - 1;
+ mux->flags = flags;
+ mux->lock = lock;
+
+ return mux;
+}
+
+static struct clk_divider *_get_cdiv(void __iomem *reg, u8 shift, u8 width,
+ u32 flags, spinlock_t *lock)
+{
+ struct clk_divider *div;
+
+ div = kzalloc(sizeof(*div), GFP_KERNEL);
+
+ if (!div)
+ return ERR_PTR(-ENOMEM);
+
+ div->reg = reg;
+ div->shift = shift;
+ div->width = width;
+ div->flags = flags;
+ div->lock = lock;
+
+ return div;
+}
+
+static struct clk_gate *_get_cgate(void __iomem *reg, u8 bit_idx, u32 flags,
+ spinlock_t *lock)
+{
+ struct clk_gate *gate;
+
+ gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+ if (!gate)
+ return ERR_PTR(-ENOMEM);
+
+ gate->reg = reg;
+ gate->bit_idx = bit_idx;
+ gate->flags = flags;
+ gate->lock = lock;
+
+ return gate;
+}
+
+struct composite_cfg {
+ struct clk_hw *mux_hw;
+ struct clk_hw *div_hw;
+ struct clk_hw *gate_hw;
+
+ const struct clk_ops *mux_ops;
+ const struct clk_ops *div_ops;
+ const struct clk_ops *gate_ops;
+};
+
+static void get_cfg_composite_div(const struct composite_clk_gcfg *gcfg,
+ const struct composite_clk_cfg *cfg,
+ struct composite_cfg *composite, spinlock_t *lock)
+{
+ struct clk_mux *mux = NULL;
+ struct clk_divider *div = NULL;
+ struct clk_gate *gate = NULL;
+ const struct clk_ops *mux_ops, *div_ops, *gate_ops;
+ struct clk_hw *mux_hw;
+ struct clk_hw *div_hw;
+ struct clk_hw *gate_hw;
+
+ mux_ops = div_ops = gate_ops = NULL;
+ mux_hw = div_hw = gate_hw = NULL;
+
+ if (gcfg->mux) {
+ mux = _get_cmux(base + cfg->mux->offset,
+ cfg->mux->shift,
+ cfg->mux->width,
+ gcfg->mux->flags, lock);
+
+ if (!IS_ERR(mux)) {
+ mux_hw = &mux->hw;
+ mux_ops = gcfg->mux->ops ?
+ gcfg->mux->ops : &clk_mux_ops;
+ }
+ }
+
+ if (gcfg->div) {
+ div = _get_cdiv(base + cfg->div->offset,
+ cfg->div->shift,
+ cfg->div->width,
+ gcfg->div->flags, lock);
+
+ if (!IS_ERR(div)) {
+ div_hw = &div->hw;
+ div_ops = gcfg->div->ops ?
+ gcfg->div->ops : &clk_divider_ops;
+ }
+
+ }
+
+ if (gcfg->gate) {
+ gate = _get_cgate(base + cfg->gate->offset,
+ cfg->gate->bit_idx,
+ gcfg->gate->flags, lock);
+
+ if (!IS_ERR(gate)) {
+ gate_hw = &gate->hw;
+ gate_ops = gcfg->gate->ops ?
+ gcfg->gate->ops : &clk_gate_ops;
+ }
+
+ }
+
+ composite->mux_hw = mux_hw;
+ composite->mux_ops = mux_ops;
+
+ composite->div_hw = div_hw;
+ composite->div_ops = div_ops;
+
+ composite->gate_hw = gate_hw;
+ composite->gate_ops = gate_ops;
+}
+
+/* Kernel Timer */
+struct timer_ker {
+ u8 dppre_shift;
+ struct clk_hw hw;
+ spinlock_t *lock;
+};
+
+#define to_timer_ker(_hw) container_of(_hw, struct timer_ker, hw)
+
+static unsigned long timer_ker_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct timer_ker *clk_elem = to_timer_ker(hw);
+ u32 timpre;
+ u32 dppre_shift = clk_elem->dppre_shift;
+ u32 prescaler;
+ u32 mul;
+
+ timpre = (readl(base + RCC_CFGR) >> 15) & 0x01;
+
+ prescaler = (readl(base + RCC_D2CFGR) >> dppre_shift) & 0x03;
+
+ mul = 2;
+
+ if (prescaler < 4)
+ mul = 1;
+
+ else if (timpre && prescaler > 4)
+ mul = 4;
+
+ return parent_rate * mul;
+}
+
+static const struct clk_ops timer_ker_ops = {
+ .recalc_rate = timer_ker_recalc_rate,
+};
+
+static struct clk_hw *clk_register_stm32_timer_ker(struct device *dev,
+ const char *name, const char *parent_name,
+ unsigned long flags,
+ u8 dppre_shift,
+ spinlock_t lock)
+{
+ struct timer_ker *element;
+ struct clk_init_data init;
+ struct clk_hw *hw;
+ int err;
+
+ element = kzalloc(sizeof(*element), GFP_KERNEL);
+ if (!element)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = &timer_ker_ops;
+ init.flags = flags;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ element->hw.init = &init;
+ element->lock = &lock;
+ element->dppre_shift = dppre_shift;
+
+ hw = &element->hw;
+ err = clk_hw_register(dev, hw);
+
+ if (err) {
+ kfree(element);
+ return ERR_PTR(err);
+ }
+
+ return hw;
+}
+
+static const struct clk_div_table d1cpre_div_table[] = {
+ { 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1},
+ { 4, 1 }, { 5, 1 }, { 6, 1 }, { 7, 1},
+ { 8, 2 }, { 9, 4 }, { 10, 8 }, { 11, 16 },
+ { 12, 64 }, { 13, 128 }, { 14, 256 },
+ { 15, 512 },
+ { 0 },
+};
+
+static const struct clk_div_table ppre_div_table[] = {
+ { 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1},
+ { 4, 2 }, { 5, 4 }, { 6, 8 }, { 7, 16 },
+ { 0 },
+};
+
+static void register_core_and_bus_clocks(void)
+{
+ /* CORE AND BUS */
+ hws[SYS_D1CPRE] = clk_hw_register_divider_table(NULL, "d1cpre",
+ "sys_ck", CLK_IGNORE_UNUSED, base + RCC_D1CFGR, 8, 4, 0,
+ d1cpre_div_table, &rlock);
+
+ hws[HCLK] = clk_hw_register_divider_table(NULL, "hclk", "d1cpre",
+ CLK_IGNORE_UNUSED, base + RCC_D1CFGR, 0, 4, 0,
+ d1cpre_div_table, &rlock);
+
+ /* D1 DOMAIN */
+ /* * CPU Systick */
+ hws[CPU_SYSTICK] = clk_hw_register_fixed_factor(NULL, "systick",
+ "d1cpre", 0, 1, 8);
+
+ /* * APB3 peripheral */
+ hws[PCLK3] = clk_hw_register_divider_table(NULL, "pclk3", "hclk", 0,
+ base + RCC_D1CFGR, 4, 3, 0,
+ ppre_div_table, &rlock);
+
+ /* D2 DOMAIN */
+ /* * APB1 peripheral */
+ hws[PCLK1] = clk_hw_register_divider_table(NULL, "pclk1", "hclk", 0,
+ base + RCC_D2CFGR, 4, 3, 0,
+ ppre_div_table, &rlock);
+
+ /* Timers prescaler clocks */
+ clk_register_stm32_timer_ker(NULL, "tim1_ker", "pclk1", 0,
+ 4, rlock);
+
+ /* * APB2 peripheral */
+ hws[PCLK2] = clk_hw_register_divider_table(NULL, "pclk2", "hclk", 0,
+ base + RCC_D2CFGR, 8, 3, 0, ppre_div_table, &rlock);
+
+ clk_register_stm32_timer_ker(NULL, "tim2_ker", "pclk2", 0, 8, rlock);
+
+ /* D3 DOMAIN */
+ /* * APB4 peripheral */
+ hws[PCLK4] = clk_hw_register_divider_table(NULL, "pclk4", "hclk", 0,
+ base + RCC_D3CFGR, 4, 3, 0,
+ ppre_div_table, &rlock);
+}
+
+/* MUX clock configuration */
+struct stm32_mux_clk {
+ const char *name;
+ const char * const *parents;
+ u8 num_parents;
+ u32 offset;
+ u8 shift;
+ u8 width;
+ u32 flags;
+};
+
+#define M_MCLOCF(_name, _parents, _mux_offset, _mux_shift, _mux_width, _flags)\
+{\
+ .name = _name,\
+ .parents = _parents,\
+ .num_parents = ARRAY_SIZE(_parents),\
+ .offset = _mux_offset,\
+ .shift = _mux_shift,\
+ .width = _mux_width,\
+ .flags = _flags,\
+}
+#define M_MCLOC(_name, _parents, _mux_offset, _mux_shift, _mux_width)\
+ M_MCLOCF(_name, _parents, _mux_offset, _mux_shift, _mux_width, 0)\
+
+static const struct stm32_mux_clk stm32_mclk[] __initconst = {
+ M_MCLOC("per_ck", per_src, RCC_D1CCIPR, 28, 3),
+ M_MCLOC("pllsrc", pll_src, RCC_PLLCKSELR, 0, 3),
+ M_MCLOC("sys_ck", sys_src, RCC_CFGR, 0, 3),
+ M_MCLOC("tracein_ck", tracein_src, RCC_CFGR, 0, 3),
+};
+
+/* Oscillary clock configuration */
+struct stm32_osc_clk {
+ const char *name;
+ const char *parent;
+ u32 gate_offset;
+ u8 bit_idx;
+ u8 bit_rdy;
+ u32 flags;
+};
+
+#define OSC_CLKF(_name, _parent, _gate_offset, _bit_idx, _bit_rdy, _flags)\
+{\
+ .name = _name,\
+ .parent = _parent,\
+ .gate_offset = _gate_offset,\
+ .bit_idx = _bit_idx,\
+ .bit_rdy = _bit_rdy,\
+ .flags = _flags,\
+}
+#define OSC_CLK(_name, _parent, _gate_offset, _bit_idx, _bit_rdy)\
+ OSC_CLKF(_name, _parent, _gate_offset, _bit_idx, _bit_rdy, 0)
+
+static const struct stm32_osc_clk stm32_oclk[] __initconst = {
+ OSC_CLK("hsi_ck", "hsidiv", RCC_CR, 0, 2),
+ OSC_CLK("hsi_ker", "hsidiv", RCC_CR, 1, 2),
+ OSC_CLK("csi_ck", "clk-csi", RCC_CR, 7, 8),
+ OSC_CLK("csi_ker", "clk-csi", RCC_CR, 9, 8),
+ OSC_CLK("rc48_ck", "clk-rc48", RCC_CR, 12, 13),
+ OSC_CLK("lsi_ck", "clk-lsi", RCC_CSR, 0, 1),
+};
+
+/* PLL configuration */
+struct st32h7_pll_cfg {
+ u8 bit_idx;
+ u32 offset_divr;
+ u8 bit_frac_en;
+ u32 offset_frac;
+ u8 divm;
+};
+
+struct stm32_pll_data {
+ const char *name;
+ const char *parent_name;
+ unsigned long flags;
+ const struct st32h7_pll_cfg *cfg;
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll1 = {
+ .bit_idx = 24,
+ .offset_divr = RCC_PLL1DIVR,
+ .bit_frac_en = 0,
+ .offset_frac = RCC_PLL1FRACR,
+ .divm = 4,
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll2 = {
+ .bit_idx = 26,
+ .offset_divr = RCC_PLL2DIVR,
+ .bit_frac_en = 4,
+ .offset_frac = RCC_PLL2FRACR,
+ .divm = 12,
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll3 = {
+ .bit_idx = 28,
+ .offset_divr = RCC_PLL3DIVR,
+ .bit_frac_en = 8,
+ .offset_frac = RCC_PLL3FRACR,
+ .divm = 20,
+};
+
+static const struct stm32_pll_data stm32_pll[] = {
+ { "vco1", "pllsrc", 0, &stm32h7_pll1 },
+ { "vco2", "pllsrc", 0, &stm32h7_pll2 },
+ { "vco3", "pllsrc", 0, &stm32h7_pll3 },
+};
+
+struct stm32_fractional_divider {
+ void __iomem *mreg;
+ u8 mshift;
+ u8 mwidth;
+ u32 mmask;
+
+ void __iomem *nreg;
+ u8 nshift;
+ u8 nwidth;
+
+ void __iomem *freg_status;
+ u8 freg_bit;
+ void __iomem *freg_value;
+ u8 fshift;
+ u8 fwidth;
+
+ u8 flags;
+ struct clk_hw hw;
+ spinlock_t *lock;
+};
+
+struct stm32_pll_obj {
+ spinlock_t *lock;
+ struct stm32_fractional_divider div;
+ struct stm32_ready_gate rgate;
+ struct clk_hw hw;
+};
+
+#define to_pll(_hw) container_of(_hw, struct stm32_pll_obj, hw)
+
+static int pll_is_enabled(struct clk_hw *hw)
+{
+ struct stm32_pll_obj *clk_elem = to_pll(hw);
+ struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+ __clk_hw_set_clk(_hw, hw);
+
+ return ready_gate_clk_ops.is_enabled(_hw);
+}
+
+static int pll_enable(struct clk_hw *hw)
+{
+ struct stm32_pll_obj *clk_elem = to_pll(hw);
+ struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+ __clk_hw_set_clk(_hw, hw);
+
+ return ready_gate_clk_ops.enable(_hw);
+}
+
+static void pll_disable(struct clk_hw *hw)
+{
+ struct stm32_pll_obj *clk_elem = to_pll(hw);
+ struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+ __clk_hw_set_clk(_hw, hw);
+
+ ready_gate_clk_ops.disable(_hw);
+}
+
+static int pll_frac_is_enabled(struct clk_hw *hw)
+{
+ struct stm32_pll_obj *clk_elem = to_pll(hw);
+ struct stm32_fractional_divider *fd = &clk_elem->div;
+
+ return (readl(fd->freg_status) >> fd->freg_bit) & 0x01;
+}
+
+static unsigned long pll_read_frac(struct clk_hw *hw)
+{
+ struct stm32_pll_obj *clk_elem = to_pll(hw);
+ struct stm32_fractional_divider *fd = &clk_elem->div;
+
+ return (readl(fd->freg_value) >> fd->fshift) &
+ GENMASK(fd->fwidth - 1, 0);
+}
+
+static unsigned long pll_fd_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct stm32_pll_obj *clk_elem = to_pll(hw);
+ struct stm32_fractional_divider *fd = &clk_elem->div;
+ unsigned long m, n;
+ u32 val, mask;
+ u64 rate, rate1 = 0;
+
+ val = clk_readl(fd->mreg);
+ mask = (GENMASK(fd->mwidth - 1, 0) << fd->mshift);
+ m = (val & mask) >> fd->mshift;
+
+ val = clk_readl(fd->nreg);
+ mask = (GENMASK(fd->nwidth - 1, 0) << fd->nshift);
+ n = ((val & mask) >> fd->nshift) + 1;
+
+ if (!n || !m)
+ return parent_rate;
+
+ rate = (u64)parent_rate * n;
+ do_div(rate, m);
+
+ if (pll_frac_is_enabled(hw)) {
+ val = pll_read_frac(hw);
+ rate1 = (u64) parent_rate * (u64) val;
+ do_div(rate1, (m * 8191));
+ }
+
+ return rate + rate1;
+}
+
+static const struct clk_ops pll_ops = {
+ .enable = pll_enable,
+ .disable = pll_disable,
+ .is_enabled = pll_is_enabled,
+ .recalc_rate = pll_fd_recalc_rate,
+};
+
+static struct clk_hw *clk_register_stm32_pll(struct device *dev,
+ const char *name,
+ const char *parent,
+ unsigned long flags,
+ const struct st32h7_pll_cfg *cfg,
+ spinlock_t *lock)
+{
+
+ struct stm32_pll_obj *pll;
+ struct clk_init_data init = { NULL };
+ struct clk_hw *hw;
+ int ret;
+ struct stm32_fractional_divider *div = NULL;
+ struct stm32_ready_gate *rgate;
+
+
+ pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+ if (!pll)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = &pll_ops;
+ init.flags = flags;
+ init.parent_names = &parent;
+ init.num_parents = 1;
+ pll->hw.init = &init;
+
+ hw = &pll->hw;
+ rgate = &pll->rgate;
+
+ rgate->bit_rdy = cfg->bit_idx + 1;
+ rgate->gate.lock = lock;
+ rgate->gate.reg = base + RCC_CR;
+ rgate->gate.bit_idx = cfg->bit_idx;
+
+ div = &pll->div;
+ div->flags = 0;
+ div->mreg = base + RCC_PLLCKSELR;
+ div->mshift = cfg->divm;
+ div->mwidth = 6;
+ div->nreg = base + cfg->offset_divr;
+ div->nshift = 0;
+ div->nwidth = 9;
+
+ div->freg_status = base + RCC_PLLCFGR;
+ div->freg_bit = cfg->bit_frac_en;
+ div->freg_value = base + cfg->offset_frac;
+ div->fshift = 3;
+ div->fwidth = 13;
+
+ div->lock = lock;
+
+ ret = clk_hw_register(dev, hw);
+ if (ret) {
+ kfree(pll);
+ hw = ERR_PTR(ret);
+ }
+
+ return hw;
+}
+
+/* ODF CLOCKS */
+static unsigned long odf_divider_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ return clk_divider_ops.recalc_rate(hw, parent_rate);
+}
+
+static long odf_divider_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ return clk_divider_ops.round_rate(hw, rate, prate);
+}
+
+static int odf_divider_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_hw *hwp;
+ int pll_status;
+ int ret;
+
+ hwp = clk_hw_get_parent(hw);
+
+ pll_status = pll_is_enabled(hwp);
+
+ if (pll_status)
+ pll_disable(hwp);
+
+ ret = clk_divider_ops.set_rate(hw, rate, parent_rate);
+
+ if (pll_status)
+ pll_enable(hwp);
+
+ return ret;
+}
+
+static const struct clk_ops odf_divider_ops = {
+ .recalc_rate = odf_divider_recalc_rate,
+ .round_rate = odf_divider_round_rate,
+ .set_rate = odf_divider_set_rate,
+};
+
+static int odf_gate_enable(struct clk_hw *hw)
+{
+ struct clk_hw *hwp;
+ int pll_status;
+ int ret;
+
+ hwp = clk_hw_get_parent(hw);
+
+ pll_status = pll_is_enabled(hwp);
+
+ if (pll_status)
+ pll_disable(hwp);
+
+ ret = clk_gate_ops.enable(hw);
+
+ if (pll_status)
+ pll_enable(hwp);
+
+ return ret;
+}
+
+static void odf_gate_disable(struct clk_hw *hw)
+{
+ clk_gate_ops.disable(hw);
+}
+
+static int odf_gate_is_enabled(struct clk_hw *hw)
+{
+ return clk_gate_ops.is_enabled(hw);
+}
+
+static const struct clk_ops odf_gate_ops = {
+ .enable = odf_gate_enable,
+ .disable = odf_gate_disable,
+ .is_enabled = odf_gate_is_enabled,
+};
+
+static struct composite_clk_gcfg odf_clk_gcfg = {
+ M_CFG_DIV(&odf_divider_ops, 0),
+ M_CFG_GATE(&odf_gate_ops, 0),
+};
+
+#define M_ODF_F(_name, _parent, _gate_offset, _bit_idx, _rate_offset,\
+ _rate_shift, _rate_width, _flags)\
+{\
+ .mux = NULL,\
+ .div = &(struct muxdiv_cfg) {_rate_offset, _rate_shift, _rate_width},\
+ .gate = &(struct gate_cfg) {_gate_offset, _bit_idx },\
+ .name = _name,\
+ .parent_name = &(const char *) {_parent},\
+ .num_parents = 1,\
+ .flags = _flags,\
+}
+
+#define M_ODF(_name, _parent, _gate_offset, _bit_idx, _rate_offset,\
+ _rate_shift, _rate_width)\
+M_ODF_F(_name, _parent, _gate_offset, _bit_idx, _rate_offset,\
+ _rate_shift, _rate_width, 0)\
+
+static const struct composite_clk_cfg stm32_odf[3][3] = {
+ {
+ M_ODF("pll1_p", "vco1", RCC_PLLCFGR, 16, RCC_PLL1DIVR, 9, 7),
+ M_ODF("pll1_q", "vco1", RCC_PLLCFGR, 17, RCC_PLL1DIVR, 16, 7),
+ M_ODF("pll1_r", "vco1", RCC_PLLCFGR, 18, RCC_PLL1DIVR, 24, 7),
+ },
+
+ {
+ M_ODF("pll2_p", "vco2", RCC_PLLCFGR, 19, RCC_PLL2DIVR, 9, 7),
+ M_ODF("pll2_q", "vco2", RCC_PLLCFGR, 20, RCC_PLL2DIVR, 16, 7),
+ M_ODF("pll2_r", "vco2", RCC_PLLCFGR, 21, RCC_PLL2DIVR, 24, 7),
+ },
+ {
+ M_ODF("pll3_p", "vco3", RCC_PLLCFGR, 22, RCC_PLL3DIVR, 9, 7),
+ M_ODF("pll3_q", "vco3", RCC_PLLCFGR, 23, RCC_PLL3DIVR, 16, 7),
+ M_ODF("pll3_r", "vco3", RCC_PLLCFGR, 24, RCC_PLL3DIVR, 24, 7),
+ }
+};
+
+/* PLL config structure from DT */
+struct pll_param {
+ u32 index;
+ u32 mult;
+ u32 div;
+ u32 frac_en;
+ u32 frac;
+ u32 vcosel;
+ u32 pllrge;
+};
+
+static int of_get_stm32_pll(struct device_node *np, struct pll_param *param)
+{
+ if (of_property_read_u32(np, "reg", &param->index) ||
+ param->index >= ARRAY_SIZE(stm32_pll))
+ return -EINVAL;
+
+ of_property_read_u32(np, "st,clock-div", &param->div);
+
+ of_property_read_u32(np, "st,clock-mult", &param->mult);
+
+ param->frac_en = ~0;
+ of_property_read_u32(np, "st,frac-status", &param->frac_en);
+
+ of_property_read_u32(np, "st,frac", &param->frac);
+
+ param->vcosel = ~0;
+ of_property_read_u32(np, "st,vcosel", &param->vcosel);
+
+ param->pllrge = ~0;
+ of_property_read_u32(np, "st,pllrge", &param->pllrge);
+
+ return 0;
+}
+
+static void stm32_pll_save_param(struct clk_hw *hw,
+ struct pll_param *pll_dt_cfg)
+{
+ struct stm32_pll_obj *clk_elem = to_pll(hw);
+ struct stm32_fractional_divider *fd = &clk_elem->div;
+ unsigned long m, n;
+ u32 val;
+ int pll_status;
+
+ /* Save PLL parameters from DT if needed */
+ pll_status = pll_ops.is_enabled(hw);
+
+ if (pll_status)
+ pll_ops.disable(hw);
+
+ m = pll_dt_cfg->div;
+ if (m) {
+ val = clk_readl(fd->mreg);
+ val &= ~(GENMASK(fd->mwidth - 1, 0) << fd->mshift);
+ val |= (m << fd->mshift);
+ writel(val, fd->mreg);
+ }
+
+ n = pll_dt_cfg->mult;
+ if (n) {
+ val = clk_readl(fd->nreg);
+ val &= ~((GENMASK(fd->nwidth - 1, 0) << fd->nshift));
+ val |= ((n - 1) << fd->nshift);
+ writel(val, fd->nreg);
+ }
+
+ if (pll_dt_cfg->frac_en != ~0) {
+ int status;
+
+ status = !!pll_dt_cfg->frac_en;
+
+ /* write frac status */
+ val = readl(fd->freg_status);
+
+ val &= ~BIT(fd->freg_bit);
+ val |= status << fd->freg_bit;
+ writel(val, fd->freg_status);
+
+ /* write frac value */
+ val = clk_readl(fd->freg_value);
+ val &= ~((GENMASK(fd->fshift - 1, 0) << fd->fshift));
+
+ /* if enable, set to '0' before */
+ if (status)
+ writel(val, fd->freg_value);
+
+ val |= ((pll_dt_cfg->frac) << fd->fshift);
+ writel(val, fd->freg_value);
+ }
+
+ if (pll_dt_cfg->vcosel != ~0) {
+ val = readl(fd->freg_status);
+ val &= ~BIT(fd->freg_bit + 1);
+ val |= (pll_dt_cfg->vcosel & 0x01) << (fd->freg_bit + 1);
+ writel(val, fd->freg_status);
+
+ }
+
+ if (pll_dt_cfg->pllrge != ~0) {
+ val = readl(fd->freg_status);
+ val &= ~(0x3 << (fd->freg_bit + 2));
+ val |= (pll_dt_cfg->pllrge & 0x3) << (fd->freg_bit + 2);
+ writel(val, fd->freg_status);
+ }
+
+ if (pll_status)
+ pll_ops.enable(hw);
+}
+
+static void stm32_h7_pll_init(struct device_node *np)
+{
+ struct pll_param pll_dt_cfg = { };
+ struct clk_hw *hw;
+ int idx, n;
+
+ if (of_get_stm32_pll(np, &pll_dt_cfg))
+ return;
+
+ idx = pll_dt_cfg.index;
+
+ /* Register the VCO */
+ hw = clk_register_stm32_pll(NULL, stm32_pll[idx].name,
+ stm32_pll[idx].parent_name, stm32_pll[idx].flags,
+ stm32_pll[idx].cfg,
+ &rlock);
+
+ stm32_pll_save_param(hw, &pll_dt_cfg);
+
+ /* Register the 3 output dividers */
+ for (n = 0; n < 3; n++) {
+ struct composite_cfg c_cfg;
+
+ get_cfg_composite_div(&odf_clk_gcfg, &stm32_odf[idx][n],
+ &c_cfg, &rlock);
+
+ hws[ODF_BANK + (idx * 3) + n] = clk_hw_register_composite(NULL,
+ stm32_odf[idx][n].name,
+ stm32_odf[idx][n].parent_name,
+ stm32_odf[idx][n].num_parents,
+ c_cfg.mux_hw, c_cfg.mux_ops,
+ c_cfg.div_hw, c_cfg.div_ops,
+ c_cfg.gate_hw, c_cfg.gate_ops,
+ stm32_odf[idx][n].flags);
+ }
+}
+
+/* PERIF CLOCKS */
+struct pclk_t {
+ u32 gate_offset;
+ u8 bit_idx;
+ const char *name;
+ const char *parent;
+ u32 flags;
+};
+
+#define PER_CLKF(_gate_offset, _bit_idx, _name, _parent, _flags)\
+{\
+ .gate_offset = _gate_offset,\
+ .bit_idx = _bit_idx,\
+ .name = _name,\
+ .parent = _parent,\
+ .flags = _flags,\
+}
+#define PER_CLK(_gate_offset, _bit_idx, _name, _parent)\
+ PER_CLKF(_gate_offset, _bit_idx, _name, _parent, 0)
+
+static const struct pclk_t pclk[] = {
+ PER_CLK(RCC_AHB3ENR, 31, "d1sram1", "hclk"),
+ PER_CLK(RCC_AHB3ENR, 30, "itcm", "hclk"),
+ PER_CLK(RCC_AHB3ENR, 29, "dtcm2", "hclk"),
+ PER_CLK(RCC_AHB3ENR, 28, "dtcm1", "hclk"),
+ PER_CLK(RCC_AHB3ENR, 8, "flitf", "hclk"),
+ PER_CLK(RCC_AHB3ENR, 5, "jpgdec", "hclk"),
+ PER_CLK(RCC_AHB3ENR, 4, "dma2d", "hclk"),
+ PER_CLK(RCC_AHB3ENR, 0, "mdma", "hclk"),
+ PER_CLK(RCC_AHB1ENR, 28, "usb2ulpi", "hclk"),
+ PER_CLK(RCC_AHB1ENR, 26, "usb1ulpi", "hclk"),
+ PER_CLK(RCC_AHB1ENR, 17, "eth1rx", "hclk"),
+ PER_CLK(RCC_AHB1ENR, 16, "eth1tx", "hclk"),
+ PER_CLK(RCC_AHB1ENR, 15, "eth1mac", "hclk"),
+ PER_CLK(RCC_AHB1ENR, 14, "art", "hclk"),
+ PER_CLK(RCC_AHB1ENR, 1, "dma2", "hclk"),
+ PER_CLK(RCC_AHB1ENR, 0, "dma1", "hclk"),
+ PER_CLK(RCC_AHB2ENR, 31, "d2sram3", "hclk"),
+ PER_CLK(RCC_AHB2ENR, 30, "d2sram2", "hclk"),
+ PER_CLK(RCC_AHB2ENR, 29, "d2sram1", "hclk"),
+ PER_CLK(RCC_AHB2ENR, 5, "hash", "hclk"),
+ PER_CLK(RCC_AHB2ENR, 4, "crypt", "hclk"),
+ PER_CLK(RCC_AHB2ENR, 0, "camitf", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 28, "bkpram", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 25, "hsem", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 21, "bdma", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 19, "crc", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 10, "gpiok", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 9, "gpioj", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 8, "gpioi", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 7, "gpioh", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 6, "gpiog", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 5, "gpiof", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 4, "gpioe", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 3, "gpiod", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 2, "gpioc", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 1, "gpiob", "hclk"),
+ PER_CLK(RCC_AHB4ENR, 0, "gpioa", "hclk"),
+ PER_CLK(RCC_APB3ENR, 6, "wwdg1", "pclk3"),
+ PER_CLK(RCC_APB1LENR, 29, "dac12", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 11, "wwdg2", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 8, "tim14", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 7, "tim13", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 6, "tim12", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 5, "tim7", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 4, "tim6", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 3, "tim5", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 2, "tim4", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 1, "tim3", "pclk1"),
+ PER_CLK(RCC_APB1LENR, 0, "tim2", "pclk1"),
+ PER_CLK(RCC_APB1HENR, 5, "mdios", "pclk1"),
+ PER_CLK(RCC_APB1HENR, 4, "opamp", "pclk1"),
+ PER_CLK(RCC_APB1HENR, 1, "crs", "pclk1"),
+ PER_CLK(RCC_APB2ENR, 18, "tim17", "pclk2"),
+ PER_CLK(RCC_APB2ENR, 17, "tim16", "pclk2"),
+ PER_CLK(RCC_APB2ENR, 16, "tim15", "pclk2"),
+ PER_CLK(RCC_APB2ENR, 1, "tim8", "pclk2"),
+ PER_CLK(RCC_APB2ENR, 0, "tim1", "pclk2"),
+ PER_CLK(RCC_APB4ENR, 26, "tmpsens", "pclk4"),
+ PER_CLK(RCC_APB4ENR, 16, "rtcapb", "pclk4"),
+ PER_CLK(RCC_APB4ENR, 15, "vref", "pclk4"),
+ PER_CLK(RCC_APB4ENR, 14, "comp12", "pclk4"),
+ PER_CLK(RCC_APB4ENR, 1, "syscfg", "pclk4"),
+};
+
+/* KERNEL CLOCKS */
+#define KER_CLKF(_gate_offset, _bit_idx,\
+ _mux_offset, _mux_shift, _mux_width,\
+ _name, _parent_name,\
+ _flags) \
+{ \
+ .gate = &(struct gate_cfg) {_gate_offset, _bit_idx},\
+ .mux = &(struct muxdiv_cfg) {_mux_offset, _mux_shift, _mux_width },\
+ .name = _name, \
+ .parent_name = _parent_name, \
+ .num_parents = ARRAY_SIZE(_parent_name),\
+ .flags = _flags,\
+}
+#define KER_CLK(_gate_offset, _bit_idx, _mux_offset, _mux_shift, _mux_width,\
+ _name, _parent_name) \
+KER_CLKF(_gate_offset, _bit_idx, _mux_offset, _mux_shift, _mux_width,\
+ _name, _parent_name, 0)\
+
+#define KER_CLKF_NOMUX(_gate_offset, _bit_idx,\
+ _name, _parent_name,\
+ _flags) \
+{ \
+ .gate = &(struct gate_cfg) {_gate_offset, _bit_idx},\
+ .mux = NULL,\
+ .name = _name, \
+ .parent_name = _parent_name, \
+ .num_parents = 1,\
+ .flags = _flags,\
+}
+
+static const struct composite_clk_cfg kclk[] = {
+ KER_CLK(RCC_AHB3ENR, 16, RCC_D1CCIPR, 16, 1, "sdmmc1", sdmmc_src),
+ KER_CLKF(RCC_AHB3ENR, 14, RCC_D1CCIPR, 4, 2, "quadspi", qspi_src,
+ CLK_IGNORE_UNUSED),
+ KER_CLKF(RCC_AHB3ENR, 12, RCC_D1CCIPR, 0, 2, "fmc", fmc_src,
+ CLK_IGNORE_UNUSED),
+ KER_CLK(RCC_AHB1ENR, 27, RCC_D2CCIP2R, 20, 2, "usb2otg", usbotg_src),
+ KER_CLK(RCC_AHB1ENR, 25, RCC_D2CCIP2R, 20, 2, "usb1otg", usbotg_src),
+ KER_CLK(RCC_AHB1ENR, 5, RCC_D3CCIPR, 16, 2, "adc12", adc_src),
+ KER_CLK(RCC_AHB2ENR, 9, RCC_D1CCIPR, 16, 1, "sdmmc2", sdmmc_src),
+ KER_CLK(RCC_AHB2ENR, 6, RCC_D2CCIP2R, 8, 2, "rng", rng_src),
+ KER_CLK(RCC_AHB4ENR, 24, RCC_D3CCIPR, 16, 2, "adc3", adc_src),
+ KER_CLK(RCC_APB3ENR, 4, RCC_D1CCIPR, 8, 1, "dsi", dsi_src),
+ KER_CLKF_NOMUX(RCC_APB3ENR, 3, "ltdc", ltdc_src, 0),
+ KER_CLK(RCC_APB1LENR, 31, RCC_D2CCIP2R, 0, 3, "usart8", usart_src2),
+ KER_CLK(RCC_APB1LENR, 30, RCC_D2CCIP2R, 0, 3, "usart7", usart_src2),
+ KER_CLK(RCC_APB1LENR, 27, RCC_D2CCIP2R, 22, 2, "hdmicec", cec_src),
+ KER_CLK(RCC_APB1LENR, 23, RCC_D2CCIP2R, 12, 2, "i2c3", i2c_src1),
+ KER_CLK(RCC_APB1LENR, 22, RCC_D2CCIP2R, 12, 2, "i2c2", i2c_src1),
+ KER_CLK(RCC_APB1LENR, 21, RCC_D2CCIP2R, 12, 2, "i2c1", i2c_src1),
+ KER_CLK(RCC_APB1LENR, 20, RCC_D2CCIP2R, 0, 3, "uart5", usart_src2),
+ KER_CLK(RCC_APB1LENR, 19, RCC_D2CCIP2R, 0, 3, "uart4", usart_src2),
+ KER_CLK(RCC_APB1LENR, 18, RCC_D2CCIP2R, 0, 3, "usart3", usart_src2),
+ KER_CLK(RCC_APB1LENR, 17, RCC_D2CCIP2R, 0, 3, "usart2", usart_src2),
+ KER_CLK(RCC_APB1LENR, 16, RCC_D2CCIP1R, 20, 2, "spdifrx", spdifrx_src),
+ KER_CLK(RCC_APB1LENR, 15, RCC_D2CCIP1R, 16, 3, "spi3", spi_src1),
+ KER_CLK(RCC_APB1LENR, 14, RCC_D2CCIP1R, 16, 3, "spi2", spi_src1),
+ KER_CLK(RCC_APB1LENR, 9, RCC_D2CCIP2R, 28, 3, "lptim1", lptim_src1),
+ KER_CLK(RCC_APB1HENR, 8, RCC_D2CCIP1R, 28, 2, "fdcan", fdcan_src),
+ KER_CLK(RCC_APB1HENR, 2, RCC_D2CCIP1R, 31, 1, "swp", swp_src),
+ KER_CLK(RCC_APB2ENR, 29, RCC_CFGR, 14, 1, "hrtim", hrtim_src),
+ KER_CLK(RCC_APB2ENR, 28, RCC_D2CCIP1R, 24, 1, "dfsdm1", dfsdm1_src),
+ KER_CLK(RCC_APB2ENR, 24, RCC_D2CCIP1R, 6, 3, "sai3", sai_src),
+ KER_CLK(RCC_APB2ENR, 23, RCC_D2CCIP1R, 6, 3, "sai2", sai_src),
+ KER_CLK(RCC_APB2ENR, 22, RCC_D2CCIP1R, 0, 3, "sai1", sai_src),
+ KER_CLK(RCC_APB2ENR, 20, RCC_D2CCIP1R, 16, 3, "spi5", spi_src2),
+ KER_CLK(RCC_APB2ENR, 13, RCC_D2CCIP1R, 16, 3, "spi4", spi_src2),
+ KER_CLK(RCC_APB2ENR, 12, RCC_D2CCIP1R, 16, 3, "spi1", spi_src1),
+ KER_CLK(RCC_APB2ENR, 5, RCC_D2CCIP2R, 3, 3, "usart6", usart_src1),
+ KER_CLK(RCC_APB2ENR, 4, RCC_D2CCIP2R, 3, 3, "usart1", usart_src1),
+ KER_CLK(RCC_APB4ENR, 21, RCC_D3CCIPR, 24, 3, "sai4b", sai_src),
+ KER_CLK(RCC_APB4ENR, 21, RCC_D3CCIPR, 21, 3, "sai4a", sai_src),
+ KER_CLK(RCC_APB4ENR, 12, RCC_D3CCIPR, 13, 3, "lptim5", lptim_src2),
+ KER_CLK(RCC_APB4ENR, 11, RCC_D3CCIPR, 13, 3, "lptim4", lptim_src2),
+ KER_CLK(RCC_APB4ENR, 10, RCC_D3CCIPR, 13, 3, "lptim3", lptim_src2),
+ KER_CLK(RCC_APB4ENR, 9, RCC_D3CCIPR, 10, 3, "lptim2", lptim_src2),
+ KER_CLK(RCC_APB4ENR, 7, RCC_D3CCIPR, 8, 2, "i2c4", i2c_src2),
+ KER_CLK(RCC_APB4ENR, 5, RCC_D3CCIPR, 28, 3, "spi6", spi_src3),
+ KER_CLK(RCC_APB4ENR, 3, RCC_D3CCIPR, 0, 3, "lpuart1", lpuart1_src),
+};
+
+static struct composite_clk_gcfg kernel_clk_cfg = {
+ M_CFG_MUX(NULL, 0),
+ M_CFG_GATE(NULL, 0),
+};
+
+/* RTC clock */
+static u8 rtc_mux_get_parent(struct clk_hw *hw)
+{
+ return clk_mux_ops.get_parent(hw);
+}
+
+static int rtc_mux_set_parent(struct clk_hw *hw, u8 index)
+{
+ int dbp_status;
+ int err;
+
+ dbp_status = is_enable_power_domain_write_protection();
+
+ if (dbp_status)
+ disable_power_domain_write_protection();
+
+ err = clk_mux_ops.set_parent(hw, index);
+
+ if (dbp_status)
+ enable_power_domain_write_protection();
+
+ return err;
+}
+
+static int rtc_mux_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ return clk_mux_ops.determine_rate(hw, req);
+}
+
+static const struct clk_ops rtc_mux_ops = {
+ .get_parent = rtc_mux_get_parent,
+ .set_parent = rtc_mux_set_parent,
+ .determine_rate = rtc_mux_determine_rate,
+};
+
+/* Clock gate with backup domain protection management */
+static int bd_gate_enable(struct clk_hw *hw)
+{
+ int dbp_status;
+ int err;
+
+ dbp_status = is_enable_power_domain_write_protection();
+
+ if (dbp_status)
+ disable_power_domain_write_protection();
+
+ err = clk_gate_ops.enable(hw);
+
+ if (dbp_status)
+ enable_power_domain_write_protection();
+
+ return err;
+}
+
+static void bd_gate_disable(struct clk_hw *hw)
+{
+ clk_gate_ops.disable(hw);
+}
+
+static int bd_gate_is_enabled(struct clk_hw *hw)
+{
+ return clk_gate_ops.is_enabled(hw);
+}
+
+static const struct clk_ops bd_gate_ops = {
+ .enable = bd_gate_enable,
+ .disable = bd_gate_disable,
+ .is_enabled = bd_gate_is_enabled,
+};
+
+static struct composite_clk_gcfg rtc_clk_cfg = {
+ M_CFG_MUX(&rtc_mux_ops, 0),
+ M_CFG_GATE(&bd_gate_ops, 0),
+};
+
+static const struct composite_clk_cfg rtc_clk =
+ KER_CLK(RCC_BDCR, 15, RCC_BDCR, 8, 2, "rtc_ck", rtc_src);
+
+/* Micro-controller output clock */
+static struct composite_clk_gcfg mco_clk_cfg = {
+ M_CFG_MUX(NULL, 0),
+ M_CFG_DIV(NULL, CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO),
+};
+
+#define M_MCO_F(_name, _parents, _mux_offset, _mux_shift, _mux_width,\
+ _rate_offset, _rate_shift, _rate_width,\
+ _flags)\
+{\
+ .mux = &(struct muxdiv_cfg) {_mux_offset, _mux_shift, _mux_width },\
+ .div = &(struct muxdiv_cfg) {_rate_offset, _rate_shift, _rate_width},\
+ .gate = NULL,\
+ .name = _name,\
+ .parent_name = _parents,\
+ .num_parents = ARRAY_SIZE(_parents),\
+ .flags = _flags,\
+}
+
+static const struct composite_clk_cfg mco_clk[] = {
+ M_MCO_F("mco1", mco_src1, RCC_CFGR, 22, 4, RCC_CFGR, 18, 4, 0),
+ M_MCO_F("mco2", mco_src2, RCC_CFGR, 29, 3, RCC_CFGR, 25, 4, 0),
+};
+
+static void __init stm32h7_rcc_init(struct device_node *np)
+{
+ struct clk_hw_onecell_data *clk_data;
+ struct device_node *node;
+ struct composite_cfg c_cfg;
+ int n;
+ const char *hse_clk, *lse_clk, *i2s_clk;
+
+ clk_data = kzalloc(sizeof(*clk_data) +
+ sizeof(*clk_data->hws) * STM32H7_MAX_CLKS,
+ GFP_KERNEL);
+ if (!clk_data)
+ return;
+
+ clk_data->num = STM32H7_MAX_CLKS;
+
+ hws = clk_data->hws;
+
+ for (n = 0; n < STM32H7_MAX_CLKS; n++)
+ hws[n] = ERR_PTR(-ENOENT);
+
+ /* get RCC base @ from DT */
+ base = of_iomap(np, 0);
+ if (!base) {
+ pr_err("%s: unable to map resource", np->name);
+ goto err_free_clks;
+ }
+
+ pdrm = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
+ if (IS_ERR(pdrm)) {
+ pdrm = NULL;
+ pr_warn("%s: Unable to get syscfg\n", __func__);
+ }
+
+ /* Put parent names from DT */
+ hse_clk = of_clk_get_parent_name(np, 0);
+ lse_clk = of_clk_get_parent_name(np, 1);
+ i2s_clk = of_clk_get_parent_name(np, 2);
+
+ sai_src[3] = i2s_clk;
+ spi_src1[3] = i2s_clk;
+
+ /* Register Internal oscillators */
+ clk_hw_register_fixed_rate(NULL, "clk-hsi", NULL, 0, 64000000);
+ clk_hw_register_fixed_rate(NULL, "clk-csi", NULL, 0, 4000000);
+ clk_hw_register_fixed_rate(NULL, "clk-lsi", NULL, 0, 32000);
+ clk_hw_register_fixed_rate(NULL, "clk-rc48", NULL, 0, 48000);
+
+ /* This clock is coming from outside. Frequencies unknown */
+ hws[CK_DSI_PHY] = clk_hw_register_fixed_rate(NULL, "ck_dsi_phy", NULL,
+ 0, 0);
+
+ hws[HSI_DIV] = clk_hw_register_divider(NULL, "hsidiv", "clk-hsi", 0,
+ base + RCC_CR, 3, 2, CLK_DIVIDER_POWER_OF_TWO,
+ &rlock);
+
+ hws[HSE_1M] = clk_hw_register_divider(NULL, "hse_1M", "hse_ck", 0,
+ base + RCC_CFGR, 8, 6, CLK_DIVIDER_ONE_BASED |
+ CLK_DIVIDER_ALLOW_ZERO,
+ &rlock);
+
+ /* Mux system clocks */
+ for (n = 0; n < ARRAY_SIZE(stm32_mclk); n++)
+ hws[MCLK_BANK + n] = clk_hw_register_mux(NULL,
+ stm32_mclk[n].name,
+ stm32_mclk[n].parents,
+ stm32_mclk[n].num_parents,
+ stm32_mclk[n].flags,
+ stm32_mclk[n].offset + base,
+ stm32_mclk[n].shift,
+ stm32_mclk[n].width,
+ 0,
+ &rlock);
+
+ register_core_and_bus_clocks();
+
+ /* Oscillary clocks */
+ for (n = 0; n < ARRAY_SIZE(stm32_oclk); n++)
+ hws[OSC_BANK + n] = clk_register_ready_gate(NULL,
+ stm32_oclk[n].name,
+ stm32_oclk[n].parent,
+ stm32_oclk[n].gate_offset + base,
+ stm32_oclk[n].bit_idx,
+ stm32_oclk[n].bit_rdy,
+ 0,
+ stm32_oclk[n].flags,
+ &rlock);
+
+ hws[HSE_CK] = clk_register_ready_gate(NULL,
+ "hse_ck",
+ hse_clk,
+ RCC_CR + base,
+ 16, 17,
+ 0,
+ 0,
+ &rlock);
+
+ hws[LSE_CK] = clk_register_ready_gate(NULL,
+ "lse_ck",
+ lse_clk,
+ RCC_BDCR + base,
+ 0, 1,
+ 1,
+ 0,
+ &rlock);
+
+ hws[CSI_KER_DIV122 + n] = clk_hw_register_fixed_factor(NULL,
+ "csi_ker_div122", "csi_ker", 0, 1, 122);
+
+ /* PLLs */
+ for_each_compatible_node(node, NULL, "stm32,pll")
+ stm32_h7_pll_init(node);
+
+ /* Peripheral clocks */
+ for (n = 0; n < ARRAY_SIZE(pclk); n++)
+ hws[PERIF_BANK + n] = clk_hw_register_gate(NULL, pclk[n].name,
+ pclk[n].parent,
+ pclk[n].flags, base + pclk[n].gate_offset,
+ pclk[n].bit_idx, pclk[n].flags, &rlock);
+
+ /* Kernel clocks */
+ for (n = 0; n < ARRAY_SIZE(kclk); n++) {
+ get_cfg_composite_div(&kernel_clk_cfg, &kclk[n], &c_cfg,
+ &rlock);
+
+ hws[KERN_BANK + n] = clk_hw_register_composite(NULL,
+ kclk[n].name,
+ kclk[n].parent_name,
+ kclk[n].num_parents,
+ c_cfg.mux_hw, c_cfg.mux_ops,
+ c_cfg.div_hw, c_cfg.div_ops,
+ c_cfg.gate_hw, c_cfg.gate_ops,
+ kclk[n].flags);
+ }
+
+ /* RTC clock (default state is off) */
+ clk_hw_register_fixed_rate(NULL, "off", NULL, 0, 0);
+
+ get_cfg_composite_div(&rtc_clk_cfg, &rtc_clk, &c_cfg, &rlock);
+
+ hws[RTC_CK] = clk_hw_register_composite(NULL,
+ rtc_clk.name,
+ rtc_clk.parent_name,
+ rtc_clk.num_parents,
+ c_cfg.mux_hw, c_cfg.mux_ops,
+ c_cfg.div_hw, c_cfg.div_ops,
+ c_cfg.gate_hw, c_cfg.gate_ops,
+ rtc_clk.flags);
+
+ /* Micro-controller clocks */
+ for (n = 0; n < ARRAY_SIZE(mco_clk); n++) {
+ get_cfg_composite_div(&mco_clk_cfg, &mco_clk[n], &c_cfg,
+ &rlock);
+
+ hws[MCO_BANK + n] = clk_hw_register_composite(NULL,
+ mco_clk[n].name,
+ mco_clk[n].parent_name,
+ mco_clk[n].num_parents,
+ c_cfg.mux_hw, c_cfg.mux_ops,
+ c_cfg.div_hw, c_cfg.div_ops,
+ c_cfg.gate_hw, c_cfg.gate_ops,
+ mco_clk[n].flags);
+ }
+
+ of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
+
+ return;
+
+err_free_clks:
+ kfree(clk_data);
+}
+CLK_OF_DECLARE_DRIVER(stm32h7_rcc, "st,stm32h743-rcc", stm32h7_rcc_init);
diff --git a/include/dt-bindings/clock/stm32h7-clks.h b/include/dt-bindings/clock/stm32h7-clks.h
new file mode 100644
index 0000000..6637272
--- /dev/null
+++ b/include/dt-bindings/clock/stm32h7-clks.h
@@ -0,0 +1,165 @@
+/* SYS, CORE AND BUS CLOCKS */
+#define SYS_D1CPRE 0
+#define HCLK 1
+#define PCLK1 2
+#define PCLK2 3
+#define PCLK3 4
+#define PCLK4 5
+#define HSI_DIV 6
+#define HSE_1M 7
+#define I2S_CKIN 8
+#define CK_DSI_PHY 9
+#define HSE_CK 10
+#define LSE_CK 11
+#define CSI_KER_DIV122 12
+#define RTC_CK 13
+#define CPU_SYSTICK 14
+
+/* OSCILLATOR BANK */
+#define OSC_BANK 18
+#define HSI_CK 18
+#define HSI_KER_CK 19
+#define CSI_CK 20
+#define CSI_KER_CK 21
+#define RC48_CK 22
+#define LSI_CK 23
+
+/* MCLOCK BANK */
+#define MCLK_BANK 28
+#define PER_CK 28
+#define PLLSRC 29
+#define SYS_CK 30
+#define TRACEIN_CK 31
+
+/* ODF BANK */
+#define ODF_BANK 32
+#define PLL1_P 32
+#define PLL1_Q 33
+#define PLL1_R 34
+#define PLL2_P 35
+#define PLL2_Q 36
+#define PLL2_R 37
+#define PLL3_P 38
+#define PLL3_Q 39
+#define PLL3_R 40
+
+/* MCO BANK */
+#define MCO_BANK 41
+#define MCO1 41
+#define MCO2 42
+
+/* PERIF BANK */
+#define PERIF_BANK 50
+#define D1SRAM1_CK 50
+#define ITCM_CK 51
+#define DTCM2_CK 52
+#define DTCM1_CK 53
+#define FLITF_CK 54
+#define JPGDEC_CK 55
+#define DMA2D_CK 56
+#define MDMA_CK 57
+#define USB2ULPI_CK 58
+#define USB1ULPI_CK 59
+#define ETH1RX_CK 60
+#define ETH1TX_CK 61
+#define ETH1MAC_CK 62
+#define ART_CK 63
+#define DMA2_CK 64
+#define DMA1_CK 65
+#define D2SRAM3_CK 66
+#define D2SRAM2_CK 67
+#define D2SRAM1_CK 68
+#define HASH_CK 69
+#define CRYPT_CK 70
+#define CAMITF_CK 71
+#define BKPRAM_CK 72
+#define HSEM_CK 73
+#define BDMA_CK 74
+#define CRC_CK 75
+#define GPIOK_CK 76
+#define GPIOJ_CK 77
+#define GPIOI_CK 78
+#define GPIOH_CK 79
+#define GPIOG_CK 80
+#define GPIOF_CK 81
+#define GPIOE_CK 82
+#define GPIOD_CK 83
+#define GPIOC_CK 84
+#define GPIOB_CK 85
+#define GPIOA_CK 86
+#define WWDG1_CK 87
+#define DAC12_CK 88
+#define WWDG2_CK 89
+#define TIM14_CK 90
+#define TIM13_CK 91
+#define TIM12_CK 92
+#define TIM7_CK 93
+#define TIM6_CK 94
+#define TIM5_CK 95
+#define TIM4_CK 96
+#define TIM3_CK 97
+#define TIM2_CK 98
+#define MDIOS_CK 99
+#define OPAMP_CK 100
+#define CRS_CK 101
+#define TIM17_CK 102
+#define TIM16_CK 103
+#define TIM15_CK 104
+#define TIM8_CK 105
+#define TIM1_CK 106
+#define TMPSENS_CK 107
+#define RTCAPB_CK 108
+#define VREF_CK 109
+#define COMP12_CK 110
+#define SYSCFG_CK 111
+
+/* KERNEL BANK */
+#define KERN_BANK 120
+#define SDMMC1_CK 120
+#define QUADSPI_CK 121
+#define FMC_CK 122
+#define USB2OTG_CK 123
+#define USB1OTG_CK 124
+#define ADC12_CK 125
+#define SDMMC2_CK 126
+#define RNG_CK 127
+#define ADC3_CK 128
+#define DSI_CK 129
+#define LTDC_CK 130
+#define USART8_CK 131
+#define USART7_CK 132
+#define HDMICEC_CK 133
+#define I2C3_CK 134
+#define I2C2_CK 135
+#define I2C1_CK 136
+#define UART5_CK 137
+#define UART4_CK 138
+#define USART3_CK 139
+#define USART2_CK 140
+#define SPDIFRX_CK 141
+#define SPI3_CK 142
+#define SPI2_CK 143
+#define LPTIM1_CK 144
+#define FDCAN_CK 145
+#define SWP_CK 146
+#define HRTIM_CK 147
+#define DFSDM1_CK 148
+#define SAI3_CK 149
+#define SAI2_CK 150
+#define SAI1_CK 151
+#define SPI5_CK 152
+#define SPI4_CK 153
+#define SPI1_CK 154
+#define USART6_CK 155
+#define USART1_CK 156
+#define SAI4B_CK 157
+#define SAI4A_CK 158
+#define LPTIM5_CK 159
+#define LPTIM4_CK 160
+#define LPTIM3_CK 161
+#define LPTIM2_CK 162
+#define I2C4_CK 163
+#define SPI6_CK 164
+#define LPUART1_CK 165
+
+#define STM32H7_MAX_CLKS 166
diff --git a/include/dt-bindings/mfd/stm32h7-rcc.h b/include/dt-bindings/mfd/stm32h7-rcc.h
new file mode 100644
index 0000000..b96b3c3
--- /dev/null
+++ b/include/dt-bindings/mfd/stm32h7-rcc.h
@@ -0,0 +1,138 @@
+/*
+ * This header provides constants for the STM32H7 RCC IP
+ */
+
+#ifndef _DT_BINDINGS_MFD_STM32H7_RCC_H
+#define _DT_BINDINGS_MFD_STM32H7_RCC_H
+
+/* AHB3 */
+#define STM32H7_RCC_AHB3_MDMA 0
+#define STM32H7_RCC_AHB3_DMA2D 4
+#define STM32H7_RCC_AHB3_JPGDEC 5
+#define STM32H7_RCC_AHB3_FMC 12
+#define STM32H7_RCC_AHB3_QUADSPI 14
+#define STM32H7_RCC_AHB3_SDMMC1 16
+#define STM32H7_RCC_AHB3_CPU1 31
+
+#define STM32H7_AHB3_RESET(bit) (STM32H7_RCC_AHB3_##bit + (0x7C * 8))
+
+/* AHB1 */
+#define STM32H7_RCC_AHB1_DMA1 0
+#define STM32H7_RCC_AHB1_DMA2 1
+#define STM32H7_RCC_AHB1_ADC12 5
+#define STM32H7_RCC_AHB1_ART 14
+#define STM32H7_RCC_AHB1_ETH1MAC 15
+#define STM32H7_RCC_AHB1_USB1OTG 25
+#define STM32H7_RCC_AHB1_USB2OTG 27
+#define STM32H7_RCC_AHB1_CPU2 31
+
+#define STM32H7_AHB1_RESET(bit) (STM32H7_RCC_AHB1_##bit + (0x80 * 8))
+
+/* AHB2 */
+#define STM32H7_RCC_AHB2_CAMITF 0
+#define STM32H7_RCC_AHB2_CRYPT 4
+#define STM32H7_RCC_AHB2_HASH 5
+#define STM32H7_RCC_AHB2_RNG 6
+#define STM32H7_RCC_AHB2_SDMMC2 9
+
+#define STM32H7_AHB2_RESET(bit) (STM32H7_RCC_AHB2_##bit + (0x84 * 8))
+
+/* AHB4 */
+#define STM32H7_RCC_AHB4_GPIOA 0
+#define STM32H7_RCC_AHB4_GPIOB 1
+#define STM32H7_RCC_AHB4_GPIOC 2
+#define STM32H7_RCC_AHB4_GPIOD 3
+#define STM32H7_RCC_AHB4_GPIOE 4
+#define STM32H7_RCC_AHB4_GPIOF 5
+#define STM32H7_RCC_AHB4_GPIOG 6
+#define STM32H7_RCC_AHB4_GPIOH 7
+#define STM32H7_RCC_AHB4_GPIOI 8
+#define STM32H7_RCC_AHB4_GPIOJ 9
+#define STM32H7_RCC_AHB4_GPIOK 10
+#define STM32H7_RCC_AHB4_CRC 19
+#define STM32H7_RCC_AHB4_BDMA 21
+#define STM32H7_RCC_AHB4_ADC3 24
+#define STM32H7_RCC_AHB4_HSEM 25
+
+#define STM32H7_AHB4_RESET(bit) (STM32H7_RCC_AHB4_##bit + (0x88 * 8))
+
+
+/* APB3 */
+#define STM32H7_RCC_APB3_LTDC 3
+#define STM32H7_RCC_APB3_DSI 4
+
+#define STM32H7_APB3_RESET(bit) (STM32H7_RCC_APB3_##bit + (0x8C * 8))
+
+/* APB1L */
+#define STM32H7_RCC_APB1L_TIM2 0
+#define STM32H7_RCC_APB1L_TIM3 1
+#define STM32H7_RCC_APB1L_TIM4 2
+#define STM32H7_RCC_APB1L_TIM5 3
+#define STM32H7_RCC_APB1L_TIM6 4
+#define STM32H7_RCC_APB1L_TIM7 5
+#define STM32H7_RCC_APB1L_TIM12 6
+#define STM32H7_RCC_APB1L_TIM13 7
+#define STM32H7_RCC_APB1L_TIM14 8
+#define STM32H7_RCC_APB1L_LPTIM1 9
+#define STM32H7_RCC_APB1L_SPI2 14
+#define STM32H7_RCC_APB1L_SPI3 15
+#define STM32H7_RCC_APB1L_SPDIF_RX 16
+#define STM32H7_RCC_APB1L_USART2 17
+#define STM32H7_RCC_APB1L_USART3 18
+#define STM32H7_RCC_APB1L_UART4 19
+#define STM32H7_RCC_APB1L_UART5 20
+#define STM32H7_RCC_APB1L_I2C1 21
+#define STM32H7_RCC_APB1L_I2C2 22
+#define STM32H7_RCC_APB1L_I2C3 23
+#define STM32H7_RCC_APB1L_HDMICEC 27
+#define STM32H7_RCC_APB1L_DAC12 29
+#define STM32H7_RCC_APB1L_USART7 30
+#define STM32H7_RCC_APB1L_USART8 31
+
+#define STM32H7_APB1L_RESET(bit) (STM32H7_RCC_APB1L_##bit + (0x90 * 8))
+
+/* APB1H */
+#define STM32H7_RCC_APB1H_CRS 1
+#define STM32H7_RCC_APB1H_SWP 2
+#define STM32H7_RCC_APB1H_OPAMP 4
+#define STM32H7_RCC_APB1H_MDIOS 5
+#define STM32H7_RCC_APB1H_FDCAN 8
+
+#define STM32H7_APB1H_RESET(bit) (STM32H7_RCC_APB1H_##bit + (0x94 * 8))
+
+/* APB2 */
+#define STM32H7_RCC_APB2_TIM1 0
+#define STM32H7_RCC_APB2_TIM8 1
+#define STM32H7_RCC_APB2_USART1 4
+#define STM32H7_RCC_APB2_USART6 5
+#define STM32H7_RCC_APB2_SPI1 12
+#define STM32H7_RCC_APB2_SPI4 13
+#define STM32H7_RCC_APB2_TIM15 16
+#define STM32H7_RCC_APB2_TIM16 17
+#define STM32H7_RCC_APB2_TIM17 18
+#define STM32H7_RCC_APB2_SPI5 20
+#define STM32H7_RCC_APB2_SAI1 22
+#define STM32H7_RCC_APB2_SAI2 23
+#define STM32H7_RCC_APB2_SAI3 24
+#define STM32H7_RCC_APB2_DFSDM1 28
+#define STM32H7_RCC_APB2_HRTIM 29
+
+#define STM32H7_APB2_RESET(bit) (STM32H7_RCC_APB2_##bit + (0x98 * 8))
+
+/* APB4 */
+#define STM32H7_RCC_APB4_SYSCFG 1
+#define STM32H7_RCC_APB4_LPUART1 3
+#define STM32H7_RCC_APB4_SPI6 5
+#define STM32H7_RCC_APB4_I2C4 7
+#define STM32H7_RCC_APB4_LPTIM2 9
+#define STM32H7_RCC_APB4_LPTIM3 10
+#define STM32H7_RCC_APB4_LPTIM4 11
+#define STM32H7_RCC_APB4_LPTIM5 12
+#define STM32H7_RCC_APB4_COMP12 14
+#define STM32H7_RCC_APB4_VREF 15
+#define STM32H7_RCC_APB4_SAI4 21
+#define STM32H7_RCC_APB4_TMPSENS 26
+
+#define STM32H7_APB4_RESET(bit) (STM32H7_RCC_APB4_##bit + (0x9C * 8))
+
+#endif /* _DT_BINDINGS_MFD_STM32H7_RCC_H */
--
1.9.1