From c35d4d7128726e7c8160bedd9ed5b309978bdeb3 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan+linaro@kernel.org>
Date: Thu, 10 Nov 2022 11:35:51 +0100
Subject: [PATCH] arm64: dts: qcom: sa8295p-adp: enable PCIe

The SA8295P-ADP has up to four PCIe interfaces implemented by three or
four controllers: PCIe2A, PCIe3A/PCIe3B and PCIe4.

PCIe2 is used in x4 mode, while PCIe3 can be used in either x2 or x4
mode. Enable both PCIe3A and PCI3B in x2 mode for now.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221110103558.12690-3-johan+linaro@kernel.org
---
 arch/arm64/boot/dts/qcom/sa8295p-adp.dts | 171 +++++++++++++++++++++++
 1 file changed, 171 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
index b608b82dff03c..ff1e6a6749134 100644
--- a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
+++ b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
@@ -57,6 +57,13 @@
 			regulator-max-microvolt = <3072000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 		};
+
+		vreg_l11a: ldo11 {
+			regulator-name = "vreg_l11a";
+			regulator-min-microvolt = <880000>;
+			regulator-max-microvolt = <880000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
 	};
 
 	pmm8540-c-regulators {
@@ -151,6 +158,76 @@
 	};
 };
 
+&pcie2a {
+	perst-gpios = <&tlmm 143 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 145 GPIO_ACTIVE_LOW>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie2a_default>;
+
+	status = "okay";
+};
+
+&pcie2a_phy {
+	vdda-phy-supply = <&vreg_l11a>;
+	vdda-pll-supply = <&vreg_l3a>;
+
+	status = "okay";
+};
+
+&pcie3a {
+	num-lanes = <2>;
+
+	perst-gpios = <&tlmm 151 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 56 GPIO_ACTIVE_LOW>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie3a_default>;
+
+	status = "okay";
+};
+
+&pcie3a_phy {
+	vdda-phy-supply = <&vreg_l11a>;
+	vdda-pll-supply = <&vreg_l3a>;
+
+	status = "okay";
+};
+
+&pcie3b {
+	perst-gpios = <&tlmm 153 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 130 GPIO_ACTIVE_LOW>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie3b_default>;
+
+	status = "okay";
+};
+
+&pcie3b_phy {
+	vdda-phy-supply = <&vreg_l11a>;
+	vdda-pll-supply = <&vreg_l3a>;
+
+	status = "okay";
+};
+
+&pcie4 {
+	perst-gpios = <&tlmm 141 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 139 GPIO_ACTIVE_LOW>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie4_default>;
+
+	status = "okay";
+};
+
+&pcie4_phy {
+	vdda-phy-supply = <&vreg_l11a>;
+	vdda-pll-supply = <&vreg_l3a>;
+
+	status = "okay";
+};
+
 &qup2 {
 	status = "okay";
 };
@@ -380,3 +457,97 @@
 };
 
 /* PINCTRL */
+
+&tlmm {
+	pcie2a_default: pcie2a-default-state {
+		clkreq-n-pins {
+			pins = "gpio142";
+			function = "pcie2a_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-n-pins {
+			pins = "gpio143";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-n-pins {
+			pins = "gpio145";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	pcie3a_default: pcie3a-default-state {
+		clkreq-n-pins {
+			pins = "gpio150";
+			function = "pcie3a_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-n-pins {
+			pins = "gpio151";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-n-pins {
+			pins = "gpio56";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	pcie3b_default: pcie3b-default-state {
+		clkreq-n-pins {
+			pins = "gpio152";
+			function = "pcie3b_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-n-pins {
+			pins = "gpio153";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-n-pins {
+			pins = "gpio130";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	pcie4_default: pcie4-default-state {
+		clkreq-n-pins {
+			pins = "gpio140";
+			function = "pcie4_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-n-pins {
+			pins = "gpio141";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-n-pins {
+			pins = "gpio139";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+};
-- 
2.30.2