[PATCH 6/7] drm: imx: mhdp: Initial support for i.MX8MQ MHDP HDMI
From: sandor . yu
Date: Mon Jun 01 2020 - 02:23:48 EST
From: Sandor Yu <Sandor.yu@xxxxxxx>
Add initial support for i.MX8MQ MHDP HDMI.
Add MHDP HDMI PHY configuration.
The features are same as mhdp hdmi bridge driver.
Signed-off-by: Sandor Yu <Sandor.yu@xxxxxxx>
---
drivers/gpu/drm/imx/mhdp/Kconfig | 5 +-
drivers/gpu/drm/imx/mhdp/Makefile | 2 +-
drivers/gpu/drm/imx/mhdp/cdns-mhdp-hdmi-phy.c | 588 ++++++++++++++++++
drivers/gpu/drm/imx/mhdp/cdns-mhdp-imxdrv.c | 12 +
drivers/gpu/drm/imx/mhdp/cdns-mhdp-phy.h | 2 +
5 files changed, 606 insertions(+), 3 deletions(-)
create mode 100644 drivers/gpu/drm/imx/mhdp/cdns-mhdp-hdmi-phy.c
diff --git a/drivers/gpu/drm/imx/mhdp/Kconfig b/drivers/gpu/drm/imx/mhdp/Kconfig
index c9e07a3bf3df..fc0cf708b900 100644
--- a/drivers/gpu/drm/imx/mhdp/Kconfig
+++ b/drivers/gpu/drm/imx/mhdp/Kconfig
@@ -1,8 +1,9 @@
# SPDX-License-Identifier: GPL-2.0-only
config DRM_IMX_CDNS_MHDP
- tristate "NXP i.MX MX8 DRM DP"
+ tristate "NXP i.MX MX8 DRM DP/HDMI"
select DRM_CDNS_MHDP
select DRM_CDNS_DP
+ select DRM_CDNS_HDMI
help
- Choose this if you want to use Displayport on i.MX8.
+ Choose this if you want to use Displayport/HDMI on i.MX8.
diff --git a/drivers/gpu/drm/imx/mhdp/Makefile b/drivers/gpu/drm/imx/mhdp/Makefile
index 4383e689445a..ca51a2a9641c 100644
--- a/drivers/gpu/drm/imx/mhdp/Makefile
+++ b/drivers/gpu/drm/imx/mhdp/Makefile
@@ -1,4 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
-cdns_mhdp_imx-objs := cdns-mhdp-imxdrv.o cdns-mhdp-dp-phy.o
+cdns_mhdp_imx-objs := cdns-mhdp-imxdrv.o cdns-mhdp-dp-phy.o cdns-mhdp-hdmi-phy.o
obj-$(CONFIG_DRM_IMX_CDNS_MHDP) += cdns_mhdp_imx.o
diff --git a/drivers/gpu/drm/imx/mhdp/cdns-mhdp-hdmi-phy.c b/drivers/gpu/drm/imx/mhdp/cdns-mhdp-hdmi-phy.c
new file mode 100644
index 000000000000..54b01e13a2b6
--- /dev/null
+++ b/drivers/gpu/drm/imx/mhdp/cdns-mhdp-hdmi-phy.c
@@ -0,0 +1,588 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Cadence High-Definition Multimedia Interface (HDMI) PHY driver
+ *
+ * Copyright (C) 2019-2020 NXP Semiconductor, Inc.
+ */
+#include <drm/drm_of.h>
+#include <drm/drm_vblank.h>
+#include <drm/drm_print.h>
+#include <drm/drm_crtc_helper.h>
+#include <linux/io.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_encoder_slave.h>
+#include <drm/drm_atomic.h>
+#include <linux/io.h>
+
+#include <drm/bridge/cdns-mhdp.h>
+#include "cdns-mhdp-phy.h"
+
+/* HDMI TX clock control settings */
+struct hdmi_ctrl {
+ u32 pixel_clk_freq_min;
+ u32 pixel_clk_freq_max;
+ u32 feedback_factor;
+ u32 data_range_kbps_min;
+ u32 data_range_kbps_max;
+ u32 cmnda_pll0_ip_div;
+ u32 cmn_ref_clk_dig_div;
+ u32 ref_clk_divider_scaler;
+ u32 pll_fb_div_total;
+ u32 cmnda_pll0_fb_div_low;
+ u32 cmnda_pll0_fb_div_high;
+ u32 pixel_div_total;
+ u32 cmnda_pll0_pxdiv_low;
+ u32 cmnda_pll0_pxdiv_high;
+ u32 vco_freq_min;
+ u32 vco_freq_max;
+ u32 vco_ring_select;
+ u32 cmnda_hs_clk_0_sel;
+ u32 cmnda_hs_clk_1_sel;
+ u32 hsclk_div_at_xcvr;
+ u32 hsclk_div_tx_sub_rate;
+ u32 cmnda_pll0_hs_sym_div_sel;
+ u32 cmnda_pll0_clk_freq_min;
+ u32 cmnda_pll0_clk_freq_max;
+};
+
+/* HDMI TX clock control settings, pixel clock is output */
+static const struct hdmi_ctrl imx8mq_ctrl_table[] = {
+/*Minclk Maxclk Fdbak DR_min DR_max ip_d dig DS Totl */
+{ 27000, 27000, 1000, 270000, 270000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x3, 27000, 27000},
+{ 27000, 27000, 1250, 337500, 337500, 0x03, 0x1, 0x1, 300, 0x0EC, 0x03C, 100, 0x030, 0x030, 2700000, 2700000, 0, 2, 2, 2, 4, 0x3, 33750, 33750},
+{ 27000, 27000, 1500, 405000, 405000, 0x03, 0x1, 0x1, 360, 0x11C, 0x048, 120, 0x03A, 0x03A, 3240000, 3240000, 0, 2, 2, 2, 4, 0x3, 40500, 40500},
+{ 27000, 27000, 2000, 540000, 540000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x2, 54000, 54000},
+{ 54000, 54000, 1000, 540000, 540000, 0x03, 0x1, 0x1, 480, 0x17C, 0x060, 80, 0x026, 0x026, 4320000, 4320000, 1, 2, 2, 2, 4, 0x3, 54000, 54000},
+{ 54000, 54000, 1250, 675000, 675000, 0x04, 0x1, 0x1, 400, 0x13C, 0x050, 50, 0x017, 0x017, 2700000, 2700000, 0, 1, 1, 2, 4, 0x2, 67500, 67500},
+{ 54000, 54000, 1500, 810000, 810000, 0x04, 0x1, 0x1, 480, 0x17C, 0x060, 60, 0x01C, 0x01C, 3240000, 3240000, 0, 2, 2, 2, 2, 0x2, 81000, 81000},
+{ 54000, 54000, 2000, 1080000, 1080000, 0x03, 0x1, 0x1, 240, 0x0BC, 0x030, 40, 0x012, 0x012, 2160000, 2160000, 0, 2, 2, 2, 1, 0x1, 108000, 108000},
+{ 74250, 74250, 1000, 742500, 742500, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 80, 0x026, 0x026, 5940000, 5940000, 1, 2, 2, 2, 4, 0x3, 74250, 74250},
+{ 74250, 74250, 1250, 928125, 928125, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 50, 0x017, 0x017, 3712500, 3712500, 1, 1, 1, 2, 4, 0x2, 92812, 92812},
+{ 74250, 74250, 1500, 1113750, 1113750, 0x04, 0x1, 0x1, 660, 0x20C, 0x084, 60, 0x01C, 0x01C, 4455000, 4455000, 1, 2, 2, 2, 2, 0x2, 111375, 111375},
+{ 74250, 74250, 2000, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 40, 0x012, 0x012, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1, 148500, 148500},
+{ 99000, 99000, 1000, 990000, 990000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2, 2, 2, 2, 0x2, 99000, 99000},
+{ 99000, 99000, 1250, 1237500, 1237500, 0x03, 0x1, 0x1, 275, 0x0D8, 0x037, 25, 0x00B, 0x00A, 2475000, 2475000, 0, 1, 1, 2, 2, 0x1, 123750, 123750},
+{ 99000, 99000, 1500, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 30, 0x00D, 0x00D, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1, 148500, 148500},
+{ 99000, 99000, 2000, 1980000, 1980000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2, 2, 2, 1, 0x1, 198000, 198000},
+{148500, 148500, 1000, 1485000, 1485000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 40, 0x012, 0x012, 5940000, 5940000, 1, 2, 2, 2, 2, 0x2, 148500, 148500},
+{148500, 148500, 1250, 1856250, 1856250, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 25, 0x00B, 0x00A, 3712500, 3712500, 1, 1, 1, 2, 2, 0x1, 185625, 185625},
+{148500, 148500, 1500, 2227500, 2227500, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 30, 0x00D, 0x00D, 4455000, 4455000, 1, 1, 1, 2, 2, 0x1, 222750, 222750},
+{148500, 148500, 2000, 2970000, 2970000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 40, 0x012, 0x012, 5940000, 5940000, 1, 2, 2, 2, 1, 0x1, 297000, 297000},
+{198000, 198000, 1000, 1980000, 1980000, 0x03, 0x1, 0x1, 220, 0x0AC, 0x02C, 10, 0x003, 0x003, 1980000, 1980000, 0, 1, 1, 2, 1, 0x0, 198000, 198000},
+{198000, 198000, 1250, 2475000, 2475000, 0x03, 0x1, 0x1, 550, 0x1B4, 0x06E, 25, 0x00B, 0x00A, 4950000, 4950000, 1, 1, 1, 2, 2, 0x1, 247500, 247500},
+{198000, 198000, 1500, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 15, 0x006, 0x005, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000, 297000},
+{198000, 198000, 2000, 3960000, 3960000, 0x03, 0x1, 0x1, 440, 0x15C, 0x058, 20, 0x008, 0x008, 3960000, 3960000, 1, 1, 1, 2, 1, 0x0, 396000, 396000},
+{297000, 297000, 1000, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 10, 0x003, 0x003, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000, 297000},
+{297000, 297000, 1500, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 15, 0x006, 0x005, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0, 445500, 445500},
+{297000, 297000, 2000, 5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 20, 0x008, 0x008, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
+{594000, 594000, 1000, 5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 10, 0x003, 0x003, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
+{594000, 594000, 750, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 10, 0x003, 0x003, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0, 445500, 445500},
+{594000, 594000, 625, 3712500, 3712500, 0x04, 0x1, 0x1, 550, 0x1B4, 0x06E, 10, 0x003, 0x003, 3712500, 3712500, 1, 1, 1, 2, 1, 0x0, 371250, 371250},
+{594000, 594000, 500, 2970000, 2970000, 0x03, 0x1, 0x1, 660, 0x20C, 0x084, 10, 0x003, 0x003, 5940000, 5940000, 1, 1, 1, 2, 2, 0x1, 297000, 297000},
+};
+
+/* HDMI TX PLL tuning settings */
+struct hdmi_pll_tuning {
+ u32 vco_freq_bin;
+ u32 vco_freq_min;
+ u32 vco_freq_max;
+ u32 volt_to_current_coarse;
+ u32 volt_to_current;
+ u32 ndac_ctrl;
+ u32 pmos_ctrl;
+ u32 ptat_ndac_ctrl;
+ u32 feedback_div_total;
+ u32 charge_pump_gain;
+ u32 coarse_code;
+ u32 v2i_code;
+ u32 vco_cal_code;
+};
+
+/* HDMI TX PLL tuning settings, pixel clock is output */
+static const struct hdmi_pll_tuning imx8mq_pll_table[] = {
+/* bin VCO_freq min/max coar cod NDAC PMOS PTAT div-T P-Gain Coa V2I CAL */
+ { 1, 1980000, 1980000, 0x4, 0x3, 0x0, 0x09, 0x09, 220, 0x42, 160, 5, 183 },
+ { 2, 2160000, 2160000, 0x4, 0x3, 0x0, 0x09, 0x09, 240, 0x42, 166, 6, 208 },
+ { 3, 2475000, 2475000, 0x5, 0x3, 0x1, 0x00, 0x07, 275, 0x42, 167, 6, 209 },
+ { 4, 2700000, 2700000, 0x5, 0x3, 0x1, 0x00, 0x07, 300, 0x42, 188, 6, 230 },
+ { 4, 2700000, 2700000, 0x5, 0x3, 0x1, 0x00, 0x07, 400, 0x4C, 188, 6, 230 },
+ { 5, 2970000, 2970000, 0x6, 0x3, 0x1, 0x00, 0x07, 330, 0x42, 183, 6, 225 },
+ { 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 360, 0x42, 203, 7, 256 },
+ { 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 480, 0x4C, 203, 7, 256 },
+ { 7, 3712500, 3712500, 0x4, 0x3, 0x0, 0x07, 0x0F, 550, 0x4C, 212, 7, 257 },
+ { 8, 3960000, 3960000, 0x5, 0x3, 0x0, 0x07, 0x0F, 440, 0x42, 184, 6, 226 },
+ { 9, 4320000, 4320000, 0x5, 0x3, 0x1, 0x07, 0x0F, 480, 0x42, 205, 7, 258 },
+ { 10, 4455000, 4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 495, 0x42, 219, 7, 272 },
+ { 10, 4455000, 4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 660, 0x4C, 219, 7, 272 },
+ { 11, 4950000, 4950000, 0x6, 0x3, 0x1, 0x00, 0x07, 550, 0x42, 213, 7, 258 },
+ { 12, 5940000, 5940000, 0x7, 0x3, 0x1, 0x00, 0x07, 660, 0x42, 244, 8, 292 },
+};
+
+static void hdmi_arc_config(struct cdns_mhdp_device *mhdp)
+{
+ u16 txpu_calib_code;
+ u16 txpd_calib_code;
+ u16 txpu_adj_calib_code;
+ u16 txpd_adj_calib_code;
+ u16 prev_calib_code;
+ u16 new_calib_code;
+ u16 rdata;
+
+ /* Power ARC */
+ cdns_phy_reg_write(mhdp, TXDA_CYA_AUXDA_CYA, 0x0001);
+
+ prev_calib_code = cdns_phy_reg_read(mhdp, TX_DIG_CTRL_REG_2);
+ txpu_calib_code = cdns_phy_reg_read(mhdp, CMN_TXPUCAL_CTRL);
+ txpd_calib_code = cdns_phy_reg_read(mhdp, CMN_TXPDCAL_CTRL);
+ txpu_adj_calib_code = cdns_phy_reg_read(mhdp, CMN_TXPU_ADJ_CTRL);
+ txpd_adj_calib_code = cdns_phy_reg_read(mhdp, CMN_TXPD_ADJ_CTRL);
+
+ new_calib_code = ((txpu_calib_code + txpd_calib_code) / 2)
+ + txpu_adj_calib_code + txpd_adj_calib_code;
+
+ if (new_calib_code != prev_calib_code) {
+ rdata = cdns_phy_reg_read(mhdp, TX_ANA_CTRL_REG_1);
+ rdata &= 0xDFFF;
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_1, rdata);
+ cdns_phy_reg_write(mhdp, TX_DIG_CTRL_REG_2, new_calib_code);
+ mdelay(10);
+ rdata |= 0x2000;
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_1, rdata);
+ udelay(150);
+ }
+
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_2, 0x0100);
+ udelay(100);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_2, 0x0300);
+ udelay(100);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_3, 0x0000);
+ udelay(100);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_1, 0x2008);
+ udelay(100);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_1, 0x2018);
+ udelay(100);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_1, 0x2098);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_2, 0x030C);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_5, 0x0010);
+ udelay(100);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_4, 0x4001);
+ mdelay(5);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_1, 0x2198);
+ mdelay(5);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_2, 0x030D);
+ udelay(100);
+ cdns_phy_reg_write(mhdp, TX_ANA_CTRL_REG_2, 0x030F);
+}
+
+static void hdmi_phy_set_vswing(struct cdns_mhdp_device *mhdp)
+{
+ const u32 num_lanes = 4;
+ u32 k;
+
+ for (k = 0; k < num_lanes; k++) {
+ cdns_phy_reg_write(mhdp, (TX_DIAG_TX_DRV | (k << 9)), 0x7c0);
+ cdns_phy_reg_write(mhdp, (TX_TXCC_CPOST_MULT_00_0 | (k << 9)), 0x0);
+ cdns_phy_reg_write(mhdp, (TX_TXCC_CAL_SCLR_MULT_0 | (k << 9)), 0x120);
+ }
+}
+
+static int hdmi_feedback_factor(struct cdns_mhdp_device *mhdp)
+{
+ u32 feedback_factor;
+
+ switch (mhdp->video_info.color_fmt) {
+ case YCBCR_4_2_2:
+ feedback_factor = 1000;
+ break;
+ case YCBCR_4_2_0:
+ switch (mhdp->video_info.color_depth) {
+ case 8:
+ feedback_factor = 500;
+ break;
+ case 10:
+ feedback_factor = 625;
+ break;
+ case 12:
+ feedback_factor = 750;
+ break;
+ case 16:
+ feedback_factor = 1000;
+ break;
+ default:
+ DRM_ERROR("Invalid ColorDepth\n");
+ return 0;
+ }
+ break;
+ default:
+ /* Assume RGB/YUV444 */
+ switch (mhdp->video_info.color_depth) {
+ case 10:
+ feedback_factor = 1250;
+ break;
+ case 12:
+ feedback_factor = 1500;
+ break;
+ case 16:
+ feedback_factor = 2000;
+ break;
+ default:
+ feedback_factor = 1000;
+ }
+ }
+ return feedback_factor;
+}
+
+static int hdmi_phy_config(struct cdns_mhdp_device *mhdp,
+ const struct hdmi_ctrl *p_ctrl_table,
+ const struct hdmi_pll_tuning *p_pll_table,
+ char pclk_in)
+{
+ const u32 num_lanes = 4;
+ u32 val, i, k;
+
+ /* enable PHY isolation mode only for CMN */
+ cdns_phy_reg_write(mhdp, PHY_PMA_ISOLATION_CTRL, 0xD000);
+
+ /* set cmn_pll0_clk_datart1_div/cmn_pll0_clk_datart0_div dividers */
+ val = cdns_phy_reg_read(mhdp, PHY_PMA_ISO_PLL_CTRL1);
+ val &= 0xFF00;
+ val |= 0x0012;
+ cdns_phy_reg_write(mhdp, PHY_PMA_ISO_PLL_CTRL1, val);
+
+ /* assert PHY reset from isolation register */
+ cdns_phy_reg_write(mhdp, PHY_ISO_CMN_CTRL, 0x0000);
+ /* assert PMA CMN reset */
+ cdns_phy_reg_write(mhdp, PHY_PMA_ISO_CMN_CTRL, 0x0000);
+
+ /* register XCVR_DIAG_BIDI_CTRL */
+ for (k = 0; k < num_lanes; k++)
+ cdns_phy_reg_write(mhdp, XCVR_DIAG_BIDI_CTRL | (k << 9), 0x00FF);
+
+ /* Describing Task phy_cfg_hdp */
+
+ val = cdns_phy_reg_read(mhdp, PHY_PMA_CMN_CTRL1);
+ val &= 0xFFF7;
+ val |= 0x0008;
+ cdns_phy_reg_write(mhdp, PHY_PMA_CMN_CTRL1, val);
+
+ /* PHY Registers */
+ val = cdns_phy_reg_read(mhdp, PHY_PMA_CMN_CTRL1);
+ val &= 0xCFFF;
+ val |= p_ctrl_table->cmn_ref_clk_dig_div << 12;
+ cdns_phy_reg_write(mhdp, PHY_PMA_CMN_CTRL1, val);
+
+ val = cdns_phy_reg_read(mhdp, PHY_HDP_CLK_CTL);
+ val &= 0x00FF;
+ val |= 0x1200;
+ cdns_phy_reg_write(mhdp, PHY_HDP_CLK_CTL, val);
+
+ /* Common control module control and diagnostic registers */
+ val = cdns_phy_reg_read(mhdp, CMN_CDIAG_REFCLK_CTRL);
+ val &= 0x8FFF;
+ val |= p_ctrl_table->ref_clk_divider_scaler << 12;
+ val |= 0x00C0;
+ cdns_phy_reg_write(mhdp, CMN_CDIAG_REFCLK_CTRL, val);
+
+ /* High speed clock used */
+ val = cdns_phy_reg_read(mhdp, CMN_DIAG_HSCLK_SEL);
+ val &= 0xFF00;
+ val |= (p_ctrl_table->cmnda_hs_clk_0_sel >> 1) << 0;
+ val |= (p_ctrl_table->cmnda_hs_clk_1_sel >> 1) << 4;
+ cdns_phy_reg_write(mhdp, CMN_DIAG_HSCLK_SEL, val);
+
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(mhdp, (XCVR_DIAG_HSCLK_SEL | (k << 9)));
+ val &= 0xCFFF;
+ val |= (p_ctrl_table->cmnda_hs_clk_0_sel >> 1) << 12;
+ cdns_phy_reg_write(mhdp, (XCVR_DIAG_HSCLK_SEL | (k << 9)), val);
+ }
+
+ /* PLL 0 control state machine registers */
+ val = p_ctrl_table->vco_ring_select << 12;
+ cdns_phy_reg_write(mhdp, CMN_PLLSM0_USER_DEF_CTRL, val);
+
+ if (pclk_in == true)
+ val = 0x30A0;
+ else {
+ val = cdns_phy_reg_read(mhdp, CMN_PLL0_VCOCAL_START);
+ val &= 0xFE00;
+ val |= p_pll_table->vco_cal_code;
+ }
+ cdns_phy_reg_write(mhdp, CMN_PLL0_VCOCAL_START, val);
+
+ cdns_phy_reg_write(mhdp, CMN_PLL0_VCOCAL_INIT_TMR, 0x0064);
+ cdns_phy_reg_write(mhdp, CMN_PLL0_VCOCAL_ITER_TMR, 0x000A);
+
+ /* Common functions control and diagnostics registers */
+ val = p_ctrl_table->cmnda_pll0_hs_sym_div_sel << 8;
+ val |= p_ctrl_table->cmnda_pll0_ip_div;
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_INCLK_CTRL, val);
+
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_OVRD, 0x0000);
+
+ val = p_ctrl_table->cmnda_pll0_fb_div_high;
+ val |= (1 << 15);
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_FBH_OVRD, val);
+
+ val = p_ctrl_table->cmnda_pll0_fb_div_low;
+ val |= (1 << 15);
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_FBL_OVRD, val);
+
+ if (pclk_in == false) {
+ val = p_ctrl_table->cmnda_pll0_pxdiv_low;
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_PXL_DIVL, val);
+
+ val = p_ctrl_table->cmnda_pll0_pxdiv_high;
+ val |= (1 << 15);
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_PXL_DIVH, val);
+ }
+
+ val = p_pll_table->volt_to_current_coarse;
+ val |= (p_pll_table->volt_to_current) << 4;
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_V2I_TUNE, val);
+
+ val = p_pll_table->charge_pump_gain;
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_CP_TUNE, val);
+
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_LF_PROG, 0x0008);
+
+ val = p_pll_table->pmos_ctrl;
+ val |= (p_pll_table->ndac_ctrl) << 8;
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_PTATIS_TUNE1, val);
+
+ val = p_pll_table->ptat_ndac_ctrl;
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_PTATIS_TUNE2, val);
+
+ if (pclk_in == true)
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_TEST_MODE, 0x0022);
+ else
+ cdns_phy_reg_write(mhdp, CMN_DIAG_PLL0_TEST_MODE, 0x0020);
+ cdns_phy_reg_write(mhdp, CMN_PSM_CLK_CTRL, 0x0016);
+
+ /* Transceiver control and diagnostic registers */
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(mhdp, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)));
+ val &= 0xBFFF;
+ cdns_phy_reg_write(mhdp, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val);
+ }
+
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(mhdp, (TX_DIAG_TX_CTRL | (k << 9)));
+ val &= 0xFF3F;
+ val |= (p_ctrl_table->hsclk_div_tx_sub_rate >> 1) << 6;
+ cdns_phy_reg_write(mhdp, (TX_DIAG_TX_CTRL | (k << 9)), val);
+ }
+
+ val = cdns_phy_reg_read(mhdp, PHY_PMA_CMN_CTRL1);
+ val &= 0xFF8F;
+ /*
+ * TODO
+ * Pixel clock source from CCM val |= 0x0030
+ * Pixel clock gererated by PHY(iMX8MQ):
+ * --single ended reference clock val |= 0x0030;
+ * --differential clock val |= 0x0000;
+ */
+ val |= 0x0030;
+ cdns_phy_reg_write(mhdp, PHY_PMA_CMN_CTRL1, val);
+
+ /* for differential clock on the refclk_p and
+ * refclk_m off chip pins: CMN_DIAG_ACYA[8]=1'b1 */
+ cdns_phy_reg_write(mhdp, CMN_DIAG_ACYA, 0x0100);
+
+ /* Deassert PHY reset */
+ cdns_phy_reg_write(mhdp, PHY_ISO_CMN_CTRL, 0x0001);
+ cdns_phy_reg_write(mhdp, PHY_PMA_ISO_CMN_CTRL, 0x0003);
+
+ /* Power state machine registers */
+ for (k = 0; k < num_lanes; k++)
+ cdns_phy_reg_write(mhdp, XCVR_PSM_RCTRL | (k << 9), 0xFEFC);
+
+ /* Assert cmn_macro_pwr_en */
+ cdns_phy_reg_write(mhdp, PHY_PMA_ISO_CMN_CTRL, 0x0013);
+
+ /* wait for cmn_macro_pwr_en_ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(mhdp, PHY_PMA_ISO_CMN_CTRL);
+ if (val & (1 << 5))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ DRM_ERROR("PMA ouput macro power up failed\n");
+ return false;
+ }
+
+ /* wait for cmn_ready */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(mhdp, PHY_PMA_CMN_CTRL1);
+ if (val & (1 << 0))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ DRM_ERROR("PMA output ready failed\n");
+ return false;
+ }
+
+ for (k = 0; k < num_lanes; k++) {
+ cdns_phy_reg_write(mhdp, TX_PSC_A0 | (k << 9), 0x6791);
+ cdns_phy_reg_write(mhdp, TX_PSC_A1 | (k << 9), 0x6790);
+ cdns_phy_reg_write(mhdp, TX_PSC_A2 | (k << 9), 0x0090);
+ cdns_phy_reg_write(mhdp, TX_PSC_A3 | (k << 9), 0x0090);
+
+ val = cdns_phy_reg_read(mhdp, RX_PSC_CAL | (k << 9));
+ val &= 0xFFBB;
+ cdns_phy_reg_write(mhdp, RX_PSC_CAL | (k << 9), val);
+
+ val = cdns_phy_reg_read(mhdp, RX_PSC_A0 | (k << 9));
+ val &= 0xFFBB;
+ cdns_phy_reg_write(mhdp, RX_PSC_A0 | (k << 9), val);
+ }
+ return true;
+}
+
+static int hdmi_phy_cfg_imx8mq(struct cdns_mhdp_device *mhdp,
+ struct drm_display_mode *mode)
+{
+ const struct hdmi_ctrl *p_ctrl_table;
+ const struct hdmi_pll_tuning *p_pll_table;
+ const u32 refclk_freq_khz = 27000;
+ const u8 pclk_in = false;
+ u32 pixel_freq = mode->clock;
+ u32 vco_freq, char_freq;
+ u32 div_total, feedback_factor;
+ u32 i, ret;
+
+ feedback_factor = hdmi_feedback_factor(mhdp);
+
+ char_freq = pixel_freq * feedback_factor / 1000;
+
+ DRM_INFO("Pixel clock: %d KHz, character clock: %d, bpc is %0d-bit.\n",
+ pixel_freq, char_freq, mhdp->video_info.color_depth);
+
+ /* Get right row from the ctrl_table table.
+ * Check if 'pixel_freq_khz' value matches the PIXEL_CLK_FREQ column.
+ * Consider only the rows with FEEDBACK_FACTOR column matching feedback_factor. */
+ for (i = 0; i < ARRAY_SIZE(imx8mq_ctrl_table); i++) {
+ if (feedback_factor == imx8mq_ctrl_table[i].feedback_factor &&
+ pixel_freq == imx8mq_ctrl_table[i].pixel_clk_freq_min) {
+ p_ctrl_table = &imx8mq_ctrl_table[i];
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(imx8mq_ctrl_table)) {
+ DRM_WARN("Pixel clk (%d KHz) not supported, color depth (%0d-bit)\n",
+ pixel_freq, mhdp->video_info.color_depth);
+ return 0;
+ }
+
+ div_total = p_ctrl_table->pll_fb_div_total;
+ vco_freq = refclk_freq_khz * div_total / p_ctrl_table->cmnda_pll0_ip_div;
+
+ /* Get right row from the imx8mq_pll_table table.
+ * Check if vco_freq_khz and feedback_div_total
+ * column matching with imx8mq_pll_table. */
+ for (i = 0; i < ARRAY_SIZE(imx8mq_pll_table); i++) {
+ if (vco_freq == imx8mq_pll_table[i].vco_freq_min &&
+ div_total == imx8mq_pll_table[i].feedback_div_total) {
+ p_pll_table = &imx8mq_pll_table[i];
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(imx8mq_pll_table)) {
+ DRM_WARN("VCO (%d KHz) not supported\n", vco_freq);
+ return 0;
+ }
+ DRM_INFO("VCO frequency is %d KHz\n", vco_freq);
+
+ ret = hdmi_phy_config(mhdp, p_ctrl_table, p_pll_table, pclk_in);
+ if (ret == false)
+ return 0;
+
+ return char_freq;
+}
+
+static int hdmi_phy_power_up(struct cdns_mhdp_device *mhdp)
+{
+ u32 val, i;
+
+ /* set Power State to A2 */
+ cdns_phy_reg_write(mhdp, PHY_HDP_MODE_CTRL, 0x0004);
+
+ cdns_phy_reg_write(mhdp, TX_DIAG_ACYA_0, 1);
+ cdns_phy_reg_write(mhdp, TX_DIAG_ACYA_1, 1);
+ cdns_phy_reg_write(mhdp, TX_DIAG_ACYA_2, 1);
+ cdns_phy_reg_write(mhdp, TX_DIAG_ACYA_3, 1);
+
+ /* Wait for Power State A2 Ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(mhdp, PHY_HDP_MODE_CTRL);
+ if (val & (1 << 6))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(mhdp->dev, "Wait A2 Ack failed\n");
+ return -1;
+ }
+
+ /* Power up ARC */
+ hdmi_arc_config(mhdp);
+
+ /* Configure PHY in A0 mode (PHY must be in the A0 power
+ * state in order to transmit data)
+ */
+ cdns_phy_reg_write(mhdp, PHY_HDP_MODE_CTRL, 0x0001);
+
+ /* Wait for Power State A0 Ack */
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(mhdp, PHY_HDP_MODE_CTRL);
+ if (val & (1 << 4))
+ break;
+ msleep(20);
+ }
+ if (i == 10) {
+ dev_err(mhdp->dev, "Wait A0 Ack failed\n");
+ return -1;
+ }
+ return 0;
+}
+
+bool cdns_hdmi_phy_mode_valid_imx8mq(struct cdns_mhdp_device *mhdp)
+{
+ u32 rate = mhdp->hdmi.mode_valid->clock;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(imx8mq_ctrl_table); i++)
+ if (rate == imx8mq_ctrl_table[i].pixel_clk_freq_min)
+ return true;
+ return false;
+}
+
+int cdns_hdmi_phy_set_imx8mq(struct cdns_mhdp_device *mhdp)
+{
+ struct drm_display_mode *mode = &mhdp->mode;
+ int ret;
+
+ /* Check HDMI FW alive before HDMI PHY init */
+ ret = cdns_mhdp_check_alive(mhdp);
+ if (ret == false) {
+ DRM_ERROR("NO HDMI FW running\n");
+ return -ENXIO;
+ }
+
+ /* Configure PHY */
+ mhdp->hdmi.char_rate = hdmi_phy_cfg_imx8mq(mhdp, mode);
+ if (mhdp->hdmi.char_rate == 0) {
+ DRM_ERROR("failed to set phy pclock\n");
+ return -EINVAL;
+ }
+
+ ret = hdmi_phy_power_up(mhdp);
+ if (ret < 0)
+ return ret;
+
+ hdmi_phy_set_vswing(mhdp);
+
+ return true;
+}
diff --git a/drivers/gpu/drm/imx/mhdp/cdns-mhdp-imxdrv.c b/drivers/gpu/drm/imx/mhdp/cdns-mhdp-imxdrv.c
index 2dec2e051be6..607d0b34b551 100644
--- a/drivers/gpu/drm/imx/mhdp/cdns-mhdp-imxdrv.c
+++ b/drivers/gpu/drm/imx/mhdp/cdns-mhdp-imxdrv.c
@@ -23,6 +23,15 @@ static const struct drm_encoder_funcs cdns_mhdp_imx_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
+static struct cdns_plat_data imx8mq_hdmi_drv_data = {
+ .plat_name = "imx8mq-hdmi",
+ .bind = cdns_hdmi_bind,
+ .unbind = cdns_hdmi_unbind,
+ .phy_set = cdns_hdmi_phy_set_imx8mq,
+ .phy_video_valid = cdns_hdmi_phy_mode_valid_imx8mq,
+ .lane_mapping = 0xe4,
+};
+
static struct cdns_plat_data imx8mq_dp_drv_data = {
.plat_name = "imx8mq-dp",
.bind = cdns_dp_bind,
@@ -32,6 +41,9 @@ static struct cdns_plat_data imx8mq_dp_drv_data = {
};
static const struct of_device_id cdns_mhdp_imx_dt_ids[] = {
+ { .compatible = "nxp,imx8mq-cdns-hdmi",
+ .data = &imx8mq_hdmi_drv_data
+ },
{ .compatible = "nxp,imx8mq-cdns-dp",
.data = &imx8mq_dp_drv_data
},
diff --git a/drivers/gpu/drm/imx/mhdp/cdns-mhdp-phy.h b/drivers/gpu/drm/imx/mhdp/cdns-mhdp-phy.h
index 79b1907726db..3305a27bcec7 100644
--- a/drivers/gpu/drm/imx/mhdp/cdns-mhdp-phy.h
+++ b/drivers/gpu/drm/imx/mhdp/cdns-mhdp-phy.h
@@ -143,4 +143,6 @@
#define PHY_PMA_ISO_RX_DATA_HI 0xCC17
int cdns_dp_phy_set_imx8mq(struct cdns_mhdp_device *hdp);
+int cdns_hdmi_phy_set_imx8mq(struct cdns_mhdp_device *mhdp);
+bool cdns_hdmi_phy_mode_valid_imx8mq(struct cdns_mhdp_device *mhdp);
#endif /* _CDNS_MHDP_PHY_H */
--
2.17.1