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From:   Sankeerth Billakanti <quic_sbillaka@quicinc.com>
To:     <dri-devel@lists.freedesktop.org>, <linux-arm-msm@vger.kernel.org>,
        <freedreno@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>,
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CC:     Sankeerth Billakanti <quic_sbillaka@quicinc.com>,
        <robdclark@gmail.com>, <seanpaul@chromium.org>,
        <swboyd@chromium.org>, <quic_kalyant@quicinc.com>,
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        <krzk+dt@kernel.org>, <sean@poorly.run>, <airlied@linux.ie>,
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        <dmitry.baryshkov@linaro.org>, <quic_vproddut@quicinc.com>
Subject: [PATCH v5 2/9] arm64: dts: qcom: sc7280: Add support for eDP panel on CRD
Date:   Wed, 16 Mar 2022 23:05:47 +0530
Message-ID: <1647452154-16361-3-git-send-email-quic_sbillaka@quicinc.com>
In-Reply-To: <1647452154-16361-1-git-send-email-quic_sbillaka@quicinc.com>
References: <1647452154-16361-1-git-send-email-quic_sbillaka@quicinc.com>
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Enable support for eDP interface via aux_bus on CRD platform.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
---

Changes in v5:
  - Change the order of patches
  - Remove the backlight nodes
  - Remove the bias setting
  - Fix compilation issue
  - Model VREG_EDP_BP for backlight power

Changes in v4:
  - Create new patch for name changes
  - Remove output-low

Changes in v3:
  - Sort the nodes alphabetically
  - Use - instead of _ as node names
  - Place the backlight and panel nodes under root
  - Change the name of edp_out to mdss_edp_out
  - Change the names of regulator nodes
  - Delete unused properties in the board file


Changes in v2:
  - Sort node references alphabetically
  - Improve readability
  - Move the pwm pinctrl to pwm node
  - Move the regulators to root
  - Define backlight power
  - Remove dummy regulator node
  - Cleanup pinctrl definitions

 arch/arm64/boot/dts/qcom/sc7280-crd.dts | 93 +++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280-crd.dts b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
index e2efbdd..2df654e 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-crd.dts
+++ b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
@@ -7,6 +7,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 #include "sc7280-idp.dtsi"
 #include "sc7280-idp-ec-h1.dtsi"
 
@@ -21,6 +22,27 @@
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
+
+	edp_3v3_regulator: edp-3v3-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "edp_3v3_regulator";
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 80 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&edp_panel_power>;
+	};
+
+	vreg_edp_bp: vreg-edp-bp-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg_edp_bp";
+		regulator-always-on;
+		regulator-boot-on;
+	};
 };
 
 &apps_rsc {
@@ -76,6 +98,58 @@ ap_ts_pen_1v8: &i2c13 {
 	};
 };
 
+&mdss {
+	status = "okay";
+};
+
+&mdss_dp {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&dp_hot_plug_det>;
+	data-lanes = <0 1>;
+	vdda-1p2-supply = <&vreg_l6b_1p2>;
+	vdda-0p9-supply = <&vreg_l1b_0p8>;
+};
+
+&mdss_edp {
+	status = "okay";
+
+	data-lanes = <0 1 2 3>;
+	vdda-1p2-supply = <&vreg_l6b_1p2>;
+	vdda-0p9-supply = <&vreg_l10c_0p8>;
+
+	aux-bus {
+		edp_panel: edp-panel {
+			compatible = "edp-panel";
+
+			power-supply = <&edp_3v3_regulator>;
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				port@0 {
+					reg = <0>;
+					edp_panel_in: endpoint {
+						remote-endpoint = <&mdss_edp_out>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&mdss_edp_out {
+	remote-endpoint = <&edp_panel_in>;
+};
+
+&mdss_edp_phy {
+	status = "okay";
+};
+
+&mdss_mdp {
+	status = "okay";
+};
+
 &nvme_3v3_regulator {
 	gpio = <&tlmm 51 GPIO_ACTIVE_HIGH>;
 };
@@ -84,7 +158,26 @@ ap_ts_pen_1v8: &i2c13 {
 	pins = "gpio51";
 };
 
+&pm8350c_gpios {
+	edp_bl_power: edp-bl-power {
+		pins = "gpio7";
+		function = "normal";
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_LOW>;
+	};
+
+	edp_bl_pwm: edp-bl-pwm {
+		pins = "gpio8";
+		function = "func1";
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_LOW>;
+	};
+};
+
 &tlmm {
+	edp_panel_power: edp-panel-power {
+		pins = "gpio80";
+		function = "gpio";
+	};
+
 	tp_int_odl: tp-int-odl {
 		pins = "gpio7";
 		function = "gpio";
-- 
2.7.4