From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Date: Fri, 29 Nov 2024 17:20:26 +0000 (+0100)
Subject: arm64: dts: qcom: x1e80100-romulus: Set up PCIe3 / SDCard reader
X-Git-Tag: v6.14-rc1~103^2~4^2~222
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=42034d232cac5402a28d04122a398c311ae532d6;p=thirdparty%2Fkernel%2Fstable.git

arm64: dts: qcom: x1e80100-romulus: Set up PCIe3 / SDCard reader

The Surface Laptops have a Realtek RTS5261 SD Card reader connected
over a Gen1x1 link to the PCIe3 host. Set up the necessary bits to
make it functional.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20241129-topic-sl7_feat2-v2-2-fb6cf5660cfc@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
index 146e3700a3a34..80fbcaea5d83e 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
@@ -767,6 +767,25 @@
 	status = "okay";
 };
 
+&pcie3 {
+	perst-gpios = <&tlmm 143 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 145 GPIO_ACTIVE_HIGH>;
+
+	pinctrl-0 = <&pcie3_default>;
+	pinctrl-names = "default";
+
+	/* The RTS5261 chip on the other side only does Gen1x1 anyway */
+	max-link-speed = <1>;
+	status = "okay";
+};
+
+&pcie3_phy {
+	vdda-phy-supply = <&vreg_l3c>;
+	vdda-pll-supply = <&vreg_l3e>;
+
+	status = "okay";
+};
+
 &pcie4 {
 	status = "okay";
 };
@@ -946,6 +965,29 @@
 		bias-disable;
 	};
 
+	pcie3_default: pcie3-default-state {
+		perst-n-pins {
+			pins = "gpio143";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-disable;
+		};
+
+		clkreq-n-pins {
+			pins = "gpio144";
+			function = "pcie3_clk";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		wake-n-pins {
+			pins = "gpio145";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
 	pcie6a_default: pcie6a-default-state {
 		perst-n-pins {
 			pins = "gpio152";