disp: msm: dsi: Add new phy comaptible string for cape

Cape uses phy version 4.3 but requires programming of
different values for vreg_ctrl_0 and vreg_ctrl_1 to
configure LDO setting. Add new phy compatible string
to distinguish cape from other chipsets and program
the registers accordingly.

Change-Id: I68b266cc6e179d211ee0fd05584a605f39b4d31d
Signed-off-by: Srihitha Tangudu <[email protected]>

msm/dsi/dsi_catalog.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/errno.h>
@@ -265,6 +266,7 @@ int dsi_catalog_phy_setup(struct dsi_phy_hw *phy,
 	case DSI_PHY_VERSION_4_1:
 	case DSI_PHY_VERSION_4_2:
 	case DSI_PHY_VERSION_4_3:
+	case DSI_PHY_VERSION_4_3_2:
 		dsi_catalog_phy_4_0_init(phy);
 		break;
 	default:

msm/dsi/dsi_phy.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/of_device.h>
@@ -71,6 +72,14 @@ static const struct dsi_ver_spec_info dsi_phy_v4_3 = {
 	.timing_cfg_count = 14,
 };
 
+static const struct dsi_ver_spec_info dsi_phy_v4_3_2 = {
+	.version = DSI_PHY_VERSION_4_3_2,
+	.lane_cfg_count = 4,
+	.strength_cfg_count = 2,
+	.regulator_cfg_count = 0,
+	.timing_cfg_count = 14,
+};
+
 static const struct of_device_id msm_dsi_phy_of_match[] = {
 	{ .compatible = "qcom,dsi-phy-v3.0",
 	  .data = &dsi_phy_v3_0,},
@@ -82,6 +91,8 @@ static const struct of_device_id msm_dsi_phy_of_match[] = {
 	  .data = &dsi_phy_v4_2,},
 	{ .compatible = "qcom,dsi-phy-v4.3",
 	  .data = &dsi_phy_v4_3,},
+	{ .compatible = "qcom,dsi-phy-v4.3.2",
+	  .data = &dsi_phy_v4_3_2,},
 	{}
 };
 

msm/dsi/dsi_phy_hw.h

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef _DSI_PHY_HW_H_
@@ -34,6 +35,7 @@
  * @DSI_PHY_VERSION_4_1:	7nm
  * @DSI_PHY_VERSION_4_2:        5nm
  * @DSI_PHY_VERSION_4_3:        5nm
+ * @DSI_PHY_VERSION_4_3_2:	4nm (v4.3 specific to SM8475)
  * @DSI_PHY_VERSION_MAX:
  */
 enum dsi_phy_version {
@@ -43,6 +45,7 @@ enum dsi_phy_version {
 	DSI_PHY_VERSION_4_1, /* 7nm */
 	DSI_PHY_VERSION_4_2, /* 5nm */
 	DSI_PHY_VERSION_4_3, /* 5nm */
+	DSI_PHY_VERSION_4_3_2, /* 4nm */
 	DSI_PHY_VERSION_MAX
 };
 

msm/dsi/dsi_phy_hw_v4_0.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/math64.h>
@@ -247,6 +248,7 @@ static void dsi_phy_hw_cphy_enable(struct dsi_phy_hw *phy,
 	u32 minor_ver = 0;
 	/* For C-PHY, no low power settings for lower clk rate */
 	u32 vreg_ctrl_0 = 0x51;
+	u32 vreg_ctrl_1 = 0x55;
 	u32 glbl_str_swi_cal_sel_ctrl = 0;
 	u32 glbl_hstx_str_ctrl_0 = 0;
 	u32 glbl_rescode_top_ctrl = 0;
@@ -272,6 +274,11 @@ static void dsi_phy_hw_cphy_enable(struct dsi_phy_hw *phy,
 		glbl_rescode_bot_ctrl = 0x3c;
 	}
 
+	if (phy->version == DSI_PHY_VERSION_4_3_2) {
+		vreg_ctrl_0 = 0x45;
+		vreg_ctrl_1 = 0x41;
+	}
+
 	/* de-assert digital and pll power down */
 	data = BIT(6) | BIT(5);
 	DSI_W32(phy, DSIPHY_CMN_CTRL_0, data);
@@ -295,7 +302,7 @@ static void dsi_phy_hw_cphy_enable(struct dsi_phy_hw *phy,
 
 	/* Enable LDO */
 	DSI_W32(phy, DSIPHY_CMN_VREG_CTRL_0, vreg_ctrl_0);
-	DSI_W32(phy, DSIPHY_CMN_VREG_CTRL_1, 0x55);
+	DSI_W32(phy, DSIPHY_CMN_VREG_CTRL_1, vreg_ctrl_1);
 	DSI_W32(phy, DSIPHY_CMN_GLBL_STR_SWI_CAL_SEL_CTRL,
 					glbl_str_swi_cal_sel_ctrl);
 	DSI_W32(phy, DSIPHY_CMN_GLBL_HSTX_STR_CTRL_0, glbl_hstx_str_ctrl_0);
@@ -356,6 +363,7 @@ static void dsi_phy_hw_dphy_enable(struct dsi_phy_hw *phy,
 	u32 minor_ver = 0;
 	bool less_than_1500_mhz = false;
 	u32 vreg_ctrl_0 = 0;
+	u32 vreg_ctrl_1 = 0x5c;
 	u32 glbl_str_swi_cal_sel_ctrl = 0;
 	u32 glbl_hstx_str_ctrl_0 = 0;
 	u32 glbl_rescode_top_ctrl = 0;
@@ -390,6 +398,11 @@ static void dsi_phy_hw_dphy_enable(struct dsi_phy_hw *phy,
 	if (phy->version >= DSI_PHY_VERSION_4_3)
 		glbl_rescode_top_ctrl = less_than_1500_mhz ? 0x3d : 0x01;
 
+	if (phy->version == DSI_PHY_VERSION_4_3_2){
+		vreg_ctrl_0 = 0x19;
+		vreg_ctrl_1 = 0x44;
+	}
+
 	split_link_enabled = cfg->split_link.enabled;
 	lanes_per_sublink = cfg->split_link.lanes_per_sublink;
 	/* de-assert digital and pll power down */
@@ -418,7 +431,7 @@ static void dsi_phy_hw_dphy_enable(struct dsi_phy_hw *phy,
 
 	/* Enable LDO */
 	DSI_W32(phy, DSIPHY_CMN_VREG_CTRL_0, vreg_ctrl_0);
-	DSI_W32(phy, DSIPHY_CMN_VREG_CTRL_1, 0x5c);
+	DSI_W32(phy, DSIPHY_CMN_VREG_CTRL_1, vreg_ctrl_1);
 	DSI_W32(phy, DSIPHY_CMN_CTRL_3, 0x00);
 	DSI_W32(phy, DSIPHY_CMN_GLBL_STR_SWI_CAL_SEL_CTRL,
 					glbl_str_swi_cal_sel_ctrl);
@@ -491,7 +504,7 @@ void dsi_phy_hw_v4_0_enable(struct dsi_phy_hw *phy,
 		pr_warn("PLL turned on before configuring PHY\n");
 
 	/* Request for REFGEN ready */
-	if (phy->version == DSI_PHY_VERSION_4_3) {
+	if (phy->version >= DSI_PHY_VERSION_4_3) {
 		DSI_W32(phy, DSIPHY_CMN_GLBL_DIGTOP_SPARE10, 0x1);
 		udelay(500);
 	}

msm/dsi/dsi_phy_timing_calc.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include "dsi_phy_timing_calc.h"
@@ -994,6 +995,7 @@ int dsi_phy_timing_calc_init(struct dsi_phy_hw *phy,
 	case DSI_PHY_VERSION_4_1:
 	case DSI_PHY_VERSION_4_2:
 	case DSI_PHY_VERSION_4_3:
+	case DSI_PHY_VERSION_4_3_2:
 		ops->get_default_phy_params =
 			dsi_phy_hw_v4_0_get_default_phy_params;
 		ops->calc_clk_zero =