[PATCH v3 09/12] clk: samsung: exynos5433: Add clocks for CMU_BUS{0|1|2} domains

From: Chanwoo Choi
Date: Wed Jan 21 2015 - 01:27:49 EST

This patch adds the mux/divider/gate clocks for CMU_BUS{0|1|2} domains
which contain global data buses clocked at up the 400MHz. These blocks
transfer data between DRAM and various sub-blocks. These clock domains
also contain global peripheral buses clocked at 67/111/200/222/266/333/400
MHz and used for register accesses.

Cc: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Cc: Tomasz Figa <tomasz.figa@xxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Acked-by: Inki Dae <inki.dae@xxxxxxxxxxx>
Reviewed-by: Pankaj Dubey <pankaj.dubey@xxxxxxxxxxx>
---
.../devicetree/bindings/clock/exynos5433-clock.txt | 21 +++
drivers/clk/samsung/clk-exynos5433.c | 187 +++++++++++++++++++++
include/dt-bindings/clock/exynos5433.h | 27 ++-
3 files changed, 234 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/clock/exynos5433-clock.txt b/Documentation/devicetree/bindings/clock/exynos5433-clock.txt
index 9a6ae75..03ae40a 100644
--- a/Documentation/devicetree/bindings/clock/exynos5433-clock.txt
+++ b/Documentation/devicetree/bindings/clock/exynos5433-clock.txt
@@ -25,6 +25,9 @@ Required Properties:
which generates clocks for Display (DECON/HDMI/DSIM/MIXER) IPs.
- "samsung,exynos5433-cmu-aud" - clock controller compatible for CMU_AUD
which generates clocks for Cortex-A5/BUS/AUDIO clocks.
+ - "samsung,exynos5433-cmu-bus0", "samsung,exynos5433-cmu-bus1"
+ and "samsung,exynos5433-cmu-bus2" - clock controller compatible for CMU_BUS
+ which generates global data buses clock and global peripheral buses clock.

- reg: physical base address of the controller and length of memory mapped
region.
@@ -94,6 +97,24 @@ Example 1: Examples of clock controller nodes are listed below.
#clock-cells = <1>;
};

+ cmu_bus0: clock-controller@0x13600000 {
+ compatible = "samsung,exynos5433-cmu-bus0";
+ reg = <0x13600000 0x0b04>;
+ #clock-cells = <1>;
+ };
+
+ cmu_bus1: clock-controller@0x14800000 {
+ compatible = "samsung,exynos5433-cmu-bus1";
+ reg = <0x14800000 0x0b04>;
+ #clock-cells = <1>;
+ };
+
+ cmu_bus2: clock-controller@0x13400000 {
+ compatible = "samsung,exynos5433-cmu-bus2";
+ reg = <0x13400000 0x0b04>;
+ #clock-cells = <1>;
+ };
+
Example 2: UART controller node that consumes the clock generated by the clock
controller.

diff --git a/drivers/clk/samsung/clk-exynos5433.c b/drivers/clk/samsung/clk-exynos5433.c
index a33ef2e..e79edd7 100644
--- a/drivers/clk/samsung/clk-exynos5433.c
+++ b/drivers/clk/samsung/clk-exynos5433.c
@@ -438,6 +438,14 @@ static struct samsung_div_clock top_div_clks[] __initdata = {
DIV(CLK_DIV_ACLK_PERIS_66_A, "div_aclk_peris_66_a",
"mout_bus_pll_user", DIV_TOP3, 0, 3),

+ /* DIV_TOP4 */
+ DIV(CLK_DIV_ACLK_G3D_400, "div_aclk_g3d_400", "mout_bus_pll_user",
+ DIV_TOP4, 8, 3),
+ DIV(CLK_DIV_ACLK_BUS0_400, "div_aclk_bus0_400", "mout_aclk_bus0_400",
+ DIV_TOP4, 4, 3),
+ DIV(CLK_DIV_ACLK_BUS1_400, "div_aclk_bus1_400", "mout_bus_pll_user",
+ DIV_TOP4, 0, 3),
+
/* DIV_TOP_FSYS0 */
DIV(CLK_DIV_SCLK_MMC1_B, "div_sclk_mmc1_b", "div_sclk_mmc1_a",
DIV_TOP_FSYS0, 16, 8),
@@ -501,6 +509,23 @@ static struct samsung_div_clock top_div_clks[] __initdata = {

static struct samsung_gate_clock top_gate_clks[] __initdata = {
/* ENABLE_ACLK_TOP */
+ GATE(CLK_ACLK_G3D_400, "aclk_g3d_400", "div_aclk_g3d_400",
+ ENABLE_ACLK_TOP, 30, 0, 0),
+ GATE(CLK_ACLK_IMEM_SSX_266, "aclk_imem_ssx_266",
+ "div_aclk_imem_sssx_266", ENABLE_ACLK_TOP,
+ 29, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_ACLK_BUS0_400, "aclk_bus0_400", "div_aclk_bus0_400",
+ ENABLE_ACLK_TOP, 26,
+ CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0),
+ GATE(CLK_ACLK_BUS1_400, "aclk_bus1_400", "div_aclk_bus1_400",
+ ENABLE_ACLK_TOP, 25,
+ CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0),
+ GATE(CLK_ACLK_IMEM_200, "aclk_imem_200", "div_aclk_imem_266",
+ ENABLE_ACLK_TOP, 24,
+ CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0),
+ GATE(CLK_ACLK_IMEM_266, "aclk_imem_266", "div_aclk_imem_200",
+ ENABLE_ACLK_TOP, 23,
+ CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0),
GATE(CLK_ACLK_PERIC_66, "aclk_peric_66", "div_aclk_peric_66_b",
ENABLE_ACLK_TOP, 22,
CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, 0),
@@ -2631,3 +2656,165 @@ static void __init exynos5433_cmu_aud_init(struct device_node *np)
}
CLK_OF_DECLARE(exynos5433_cmu_aud, "samsung,exynos5433-cmu-aud",
exynos5433_cmu_aud_init);
+
+
+/*
+ * Register offset definitions for CMU_BUS{0|1|2}
+ */
+#define DIV_BUS 0x0600
+#define DIV_STAT_BUS 0x0700
+#define ENABLE_ACLK_BUS 0x0800
+#define ENABLE_PCLK_BUS 0x0900
+#define ENABLE_IP_BUS0 0x0b00
+#define ENABLE_IP_BUS1 0x0b04
+
+#define MUX_SEL_BUS2 0x0200 /* Only for CMU_BUS2 */
+#define MUX_ENABLE_BUS2 0x0300 /* Only for CMU_BUS2 */
+#define MUX_STAT_BUS2 0x0400 /* Only for CMU_BUS2 */
+
+/* list of all parent clock list */
+PNAME(mout_aclk_bus2_400_p) = { "fin_pll", "aclk_bus2_400", };
+
+#define CMU_BUS_COMMON_CLK_REGS \
+ DIV_BUS, \
+ DIV_STAT_BUS, \
+ ENABLE_ACLK_BUS, \
+ ENABLE_PCLK_BUS, \
+ ENABLE_IP_BUS0, \
+ ENABLE_IP_BUS1
+
+static unsigned long bus01_clk_regs[] __initdata = {
+ CMU_BUS_COMMON_CLK_REGS,
+};
+
+static unsigned long bus2_clk_regs[] __initdata = {
+ MUX_SEL_BUS2,
+ MUX_ENABLE_BUS2,
+ MUX_STAT_BUS2,
+ CMU_BUS_COMMON_CLK_REGS,
+};
+
+static struct samsung_div_clock bus0_div_clks[] __initdata = {
+ /* DIV_BUS0 */
+ DIV(CLK_DIV_PCLK_BUS_133, "div_pclk_bus0_133", "aclk_bus0_400",
+ DIV_BUS, 0, 3),
+};
+
+/* CMU_BUS0 clocks */
+static struct samsung_gate_clock bus0_gate_clks[] __initdata = {
+ /* ENABLE_ACLK_BUS0 */
+ GATE(CLK_ACLK_AHB2APB_BUSP, "aclk_ahb2apb_bus0p", "div_pclk_bus0_133",
+ ENABLE_ACLK_BUS, 4, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_ACLK_BUSNP_133, "aclk_bus0np_133", "div_pclk_bus0_133",
+ ENABLE_ACLK_BUS, 2, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_ACLK_BUSND_400, "aclk_bus0nd_400", "aclk_bus0_400",
+ ENABLE_ACLK_BUS, 0, CLK_IGNORE_UNUSED, 0),
+
+ /* ENABLE_PCLK_BUS0 */
+ GATE(CLK_PCLK_BUSSRVND_133, "pclk_bus0srvnd_133", "div_pclk_bus0_133",
+ ENABLE_PCLK_BUS, 2, 0, 0),
+ GATE(CLK_PCLK_PMU_BUS, "pclk_pmu_bus0", "div_pclk_bus0_133",
+ ENABLE_PCLK_BUS, 1, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_PCLK_SYSREG_BUS, "pclk_sysreg_bus0", "div_pclk_bus0_133",
+ ENABLE_PCLK_BUS, 0, CLK_IGNORE_UNUSED, 0),
+};
+
+/* CMU_BUS1 clocks */
+static struct samsung_div_clock bus1_div_clks[] __initdata = {
+ /* DIV_BUS1 */
+ DIV(CLK_DIV_PCLK_BUS_133, "div_pclk_bus1_133", "aclk_bus1_400",
+ DIV_BUS, 0, 3),
+};
+
+static struct samsung_gate_clock bus1_gate_clks[] __initdata = {
+ /* ENABLE_ACLK_BUS1 */
+ GATE(CLK_ACLK_AHB2APB_BUSP, "aclk_ahb2apb_bus1p", "div_pclk_bus1_133",
+ ENABLE_ACLK_BUS, 4, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_ACLK_BUSNP_133, "aclk_bus1np_133", "div_pclk_bus1_133",
+ ENABLE_ACLK_BUS, 2, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_ACLK_BUSND_400, "aclk_bus1nd_400", "aclk_bus1_400",
+ ENABLE_ACLK_BUS, 0, CLK_IGNORE_UNUSED, 0),
+
+ /* ENABLE_PCLK_BUS1 */
+ GATE(CLK_PCLK_BUSSRVND_133, "pclk_bus1srvnd_133", "div_pclk_bus1_133",
+ ENABLE_PCLK_BUS, 2, 0, 0),
+ GATE(CLK_PCLK_PMU_BUS, "pclk_pmu_bus1", "div_pclk_bus1_133",
+ ENABLE_PCLK_BUS, 1, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_PCLK_SYSREG_BUS, "pclk_sysreg_bus1", "div_pclk_bus1_133",
+ ENABLE_PCLK_BUS, 0, CLK_IGNORE_UNUSED, 0),
+};
+
+/* CMU_BUS2 clocks */
+static struct samsung_mux_clock bus2_mux_clks[] __initdata = {
+ /* MUX_SEL_BUS2 */
+ MUX(CLK_MOUT_ACLK_BUS2_400_USER, "mout_aclk_bus2_400_user",
+ mout_aclk_bus2_400_p, MUX_SEL_BUS2, 0, 1),
+};
+
+static struct samsung_div_clock bus2_div_clks[] __initdata = {
+ /* DIV_BUS2 */
+ DIV(CLK_DIV_PCLK_BUS_133, "div_pclk_bus2_133",
+ "mout_aclk_bus2_400_user", DIV_BUS, 0, 3),
+};
+
+static struct samsung_gate_clock bus2_gate_clks[] __initdata = {
+ /* ENABLE_ACLK_BUS2 */
+ GATE(CLK_ACLK_AHB2APB_BUSP, "aclk_ahb2apb_bus2p", "div_pclk_bus2_133",
+ ENABLE_ACLK_BUS, 3, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_ACLK_BUSNP_133, "aclk_bus2np_133", "div_pclk_bus2_133",
+ ENABLE_ACLK_BUS, 2, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_ACLK_BUS2BEND_400, "aclk_bus2bend_400",
+ "mout_aclk_bus2_400_user", ENABLE_ACLK_BUS,
+ 1, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_ACLK_BUS2RTND_400, "aclk_bus2rtnd_400",
+ "mout_aclk_bus2_400_user", ENABLE_ACLK_BUS,
+ 0, CLK_IGNORE_UNUSED, 0),
+
+ /* ENABLE_PCLK_BUS2 */
+ GATE(CLK_PCLK_BUSSRVND_133, "pclk_bus2srvnd_133", "div_pclk_bus2_133",
+ ENABLE_PCLK_BUS, 2, 0, 0),
+ GATE(CLK_PCLK_PMU_BUS, "pclk_pmu_bus2", "div_pclk_bus2_133",
+ ENABLE_PCLK_BUS, 1, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_PCLK_SYSREG_BUS, "pclk_sysreg_bus2", "div_pclk_bus2_133",
+ ENABLE_PCLK_BUS, 0, CLK_IGNORE_UNUSED, 0),
+};
+
+#define CMU_BUS_INFO_CLKS(id) \
+ .div_clks = bus##id##_div_clks, \
+ .nr_div_clks = ARRAY_SIZE(bus##id##_div_clks), \
+ .gate_clks = bus##id##_gate_clks, \
+ .nr_gate_clks = ARRAY_SIZE(bus##id##_gate_clks), \
+ .nr_clk_ids = BUSx_NR_CLK
+
+static struct samsung_cmu_info bus0_cmu_info __initdata = {
+ CMU_BUS_INFO_CLKS(0),
+ .clk_regs = bus01_clk_regs,
+ .nr_clk_regs = ARRAY_SIZE(bus01_clk_regs),
+};
+
+static struct samsung_cmu_info bus1_cmu_info __initdata = {
+ CMU_BUS_INFO_CLKS(1),
+ .clk_regs = bus01_clk_regs,
+ .nr_clk_regs = ARRAY_SIZE(bus01_clk_regs),
+};
+
+static struct samsung_cmu_info bus2_cmu_info __initdata = {
+ CMU_BUS_INFO_CLKS(2),
+ .mux_clks = bus2_mux_clks,
+ .nr_mux_clks = ARRAY_SIZE(bus2_mux_clks),
+ .clk_regs = bus2_clk_regs,
+ .nr_clk_regs = ARRAY_SIZE(bus2_clk_regs),
+};
+
+#define exynos5433_cmu_bus_init(id) \
+static void __init exynos5433_cmu_bus##id##_init(struct device_node *np)\
+{ \
+ samsung_cmu_register_one(np, &bus##id##_cmu_info); \
+} \
+CLK_OF_DECLARE(exynos5433_cmu_bus##id, \
+ "samsung,exynos5433-cmu-bus"#id, \
+ exynos5433_cmu_bus##id##_init)
+
+exynos5433_cmu_bus_init(0);
+exynos5433_cmu_bus_init(1);
+exynos5433_cmu_bus_init(2);
diff --git a/include/dt-bindings/clock/exynos5433.h b/include/dt-bindings/clock/exynos5433.h
index 4828e02..6bc7f51 100644
--- a/include/dt-bindings/clock/exynos5433.h
+++ b/include/dt-bindings/clock/exynos5433.h
@@ -107,6 +107,9 @@
#define CLK_DIV_ACLK_MFC_400 134
#define CLK_DIV_ACLK_G2D_266 135
#define CLK_DIV_ACLK_G2D_400 136
+#define CLK_DIV_ACLK_G3D_400 137
+#define CLK_DIV_ACLK_BUS0_400 138
+#define CLK_DIV_ACLK_BUS1_400 139

#define CLK_ACLK_PERIC_66 200
#define CLK_ACLK_PERIS_66 201
@@ -130,8 +133,14 @@
#define CLK_SCLK_AUDIO0 219
#define CLK_ACLK_G2D_266 220
#define CLK_ACLK_G2D_400 221
+#define CLK_ACLK_G3D_400 222
+#define CLK_ACLK_IMEM_SSX_266 223
+#define CLK_ACLK_BUS0_400 224
+#define CLK_ACLK_BUS1_400 225
+#define CLK_ACLK_IMEM_200 226
+#define CLK_ACLK_IMEM_266 227

-#define TOP_NR_CLK 222
+#define TOP_NR_CLK 228

/* CMU_CPIF */
#define CLK_FOUT_MPHY_PLL 1
@@ -679,4 +688,20 @@

#define AUD_NR_CLK 48

+/* CMU_BUS{0|1|2} */
+#define CLK_DIV_PCLK_BUS_133 1
+
+#define CLK_ACLK_AHB2APB_BUSP 2
+#define CLK_ACLK_BUSNP_133 3
+#define CLK_ACLK_BUSND_400 4
+#define CLK_PCLK_BUSSRVND_133 5
+#define CLK_PCLK_PMU_BUS 6
+#define CLK_PCLK_SYSREG_BUS 7
+
+#define CLK_MOUT_ACLK_BUS2_400_USER 8 /* Only CMU_BUS2 */
+#define CLK_ACLK_BUS2BEND_400 9 /* Only CMU_BUS2 */
+#define CLK_ACLK_BUS2RTND_400 10 /* Only CMU_BUS2 */
+
+#define BUSx_NR_CLK 11
+
#endif /* _DT_BINDINGS_CLOCK_EXYNOS5433_H */
--
1.8.5.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/