linux-kernel - [PATCH v3 2/2] arm64: dts: sc7180: Support Parade ps8640 edp bridge

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Date:   Fri,  8 Oct 2021 11:39:35 -0700
From:   Philip Chen <philipchen@...omium.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     swboyd@...omium.org, dianders@...omium.org,
        Philip Chen <philipchen@...omium.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: [PATCH v3 2/2] arm64: dts: sc7180: Support Parade ps8640 edp bridge

Add a dts fragment file to support the sc7180 boards with the second
source edp bridge, Parade ps8640.

Signed-off-by: Philip Chen <philipchen@...omium.org>
---

Changes in v3:
- Set gpio32 active high
- Rename edp-bridge to bridge to align with ti-sn65 dts
- Remove the unused label 'aux_bus'

Changes in v2:
- Add the definition of edp_brij_i2c and some other properties to
  ps8640 dts, making it match ti-sn65dsi86 dts better

 .../qcom/sc7180-trogdor-parade-ps8640.dtsi    | 109 ++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/sc7180-trogdor-parade-ps8640.dtsi

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-parade-ps8640.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-parade-ps8640.dtsi
new file mode 100644
index 000000000000..a3d69540d4e4
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-parade-ps8640.dtsi
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Google Trogdor dts fragment for the boards with Parade ps8640 edp bridge
+ *
+ * Copyright 2021 Google LLC.
+ */
+
+/ {
+	pp3300_brij_ps8640: pp3300-brij-ps8640 {
+		compatible = "regulator-fixed";
+		status = "okay";
+		regulator-name = "pp3300_brij_ps8640";
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 32 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&en_pp3300_edp_brij_ps8640>;
+
+		vin-supply = <&pp3300_a>;
+	};
+};
+
+&dsi0_out {
+	remote-endpoint = <&ps8640_in>;
+};
+
+edp_brij_i2c: &i2c2 {
+	status = "okay";
+	clock-frequency = <400000>;
+
+	ps8640_bridge: bridge@8 {
+		compatible = "parade,ps8640";
+		reg = <0x8>;
+
+		powerdown-gpios = <&tlmm 104 GPIO_ACTIVE_LOW>;
+		reset-gpios = <&tlmm 11 GPIO_ACTIVE_LOW>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&edp_brij_en>, <&edp_brij_ps8640_rst>;
+
+		vdd12-supply = <&pp1200_brij>;
+		vdd33-supply = <&pp3300_brij_ps8640>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				ps8640_in: endpoint {
+					remote-endpoint = <&dsi0_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				ps8640_out: endpoint {
+					remote-endpoint = <&panel_in_edp>;
+				};
+			};
+		};
+
+		aux-bus {
+			panel: panel {
+				/* Compatible will be filled in per-board */
+				power-supply = <&pp3300_dx_edp>;
+				backlight = <&backlight>;
+
+				port {
+					panel_in_edp: endpoint {
+						remote-endpoint = <&ps8640_out>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&tlmm {
+	edp_brij_ps8640_rst: edp-brij-ps8640-rst {
+		pinmux {
+			pins = "gpio11";
+			function = "gpio";
+		};
+
+		pinconf {
+			pins = "gpio11";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
+
+	en_pp3300_edp_brij_ps8640: en-pp3300-edp-brij-ps8640 {
+		pinmux {
+			pins = "gpio32";
+			function = "gpio";
+		};
+
+		pinconf {
+			pins = "gpio32";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
+};
-- 
2.33.0.882.g93a45727a2-goog