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From: Abel Vesa <abel.vesa@linaro.org>
Date: Thu, 30 May 2024 18:43:41 +0300
Subject: [PATCH 3/3] arm64: dts: qcom: x1e80100: Describe the PCIe 6a
 resources
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Message-Id: <20240530-x1e80100-dts-pcie6a-v1-3-ee17a9939ba5@linaro.org>
References: <20240530-x1e80100-dts-pcie6a-v1-0-ee17a9939ba5@linaro.org>
In-Reply-To: <20240530-x1e80100-dts-pcie6a-v1-0-ee17a9939ba5@linaro.org>
To: Bjorn Andersson <andersson@kernel.org>, 
 Konrad Dybcio <konrad.dybcio@linaro.org>, Rob Herring <robh@kernel.org>, 
 Krzysztof Kozlowski <krzk+dt@kernel.org>, 
 Conor Dooley <conor+dt@kernel.org>, Sibi Sankar <quic_sibis@quicinc.com>, 
 Rajendra Nayak <quic_rjendra@quicinc.com>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, 
 linux-kernel@vger.kernel.org, Abel Vesa <abel.vesa@linaro.org>

On both the CRD and QCP, on PCIe 6a sits the NVMe. Add the 3.3V
gpio-controlled regulator and the clkreq, perst and wake gpios as
resources for the PCIe 6a.

Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
---
 arch/arm64/boot/dts/qcom/x1e80100-crd.dts | 52 +++++++++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/x1e80100-qcp.dts | 52 +++++++++++++++++++++++++++++++
 2 files changed, 104 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-crd.dts b/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
index 3ce2c8a841ec..10ec40a193fb 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
@@ -173,6 +173,20 @@ vreg_edp_3p3: regulator-edp-3p3 {
 		regulator-always-on;
 		regulator-boot-on;
 	};
+
+	vreg_nvme: regulator-nvme {
+		compatible = "regulator-fixed";
+
+		regulator-name = "VREG_NVME_3P3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 18 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&nvme_reg_en>;
+	};
 };
 
 &apps_rsc {
@@ -655,6 +669,14 @@ &pcie4_phy {
 };
 
 &pcie6a {
+	perst-gpios = <&tlmm 152 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 154 GPIO_ACTIVE_LOW>;
+
+	vddpe-3v3-supply = <&vreg_nvme>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie6a_default>;
+
 	status = "okay";
 };
 
@@ -804,6 +826,36 @@ kybd_default: kybd-default-state {
 		bias-disable;
 	};
 
+	nvme_reg_en: nvme-reg-en-state {
+		pins = "gpio18";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	pcie6a_default: pcie2a-default-state {
+		clkreq-n-pins {
+			pins = "gpio153";
+			function = "pcie6a_clk";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-n-pins {
+			pins = "gpio152";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-n-pins {
+		       pins = "gpio154";
+		       function = "gpio";
+		       drive-strength = <2>;
+		       bias-pull-up;
+	       };
+	};
+
 	tpad_default: tpad-default-state {
 		pins = "gpio3";
 		function = "gpio";
diff --git a/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts b/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
index e1b19177523f..ab02a6e35eb6 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
@@ -59,6 +59,20 @@ vreg_edp_3p3: regulator-edp-3p3 {
 		regulator-always-on;
 		regulator-boot-on;
 	};
+
+	vreg_nvme: regulator-nvme {
+		compatible = "regulator-fixed";
+
+		regulator-name = "VREG_NVME_3P3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 18 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&nvme_reg_en>;
+	};
 };
 
 &apps_rsc {
@@ -466,6 +480,14 @@ &pcie4_phy {
 };
 
 &pcie6a {
+	perst-gpios = <&tlmm 152 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 154 GPIO_ACTIVE_LOW>;
+
+	vddpe-3v3-supply = <&vreg_nvme>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie6a_default>;
+
 	status = "okay";
 };
 
@@ -528,6 +550,36 @@ edp_reg_en: edp-reg-en-state {
 		drive-strength = <16>;
 		bias-disable;
 	};
+
+	nvme_reg_en: nvme-reg-en-state {
+		pins = "gpio18";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	pcie6a_default: pcie2a-default-state {
+		clkreq-n-pins {
+			pins = "gpio153";
+			function = "pcie6a_clk";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-n-pins {
+			pins = "gpio152";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-n-pins {
+		       pins = "gpio154";
+		       function = "gpio";
+		       drive-strength = <2>;
+		       bias-pull-up;
+	       };
+	};
 };
 
 &uart21 {

-- 
2.34.1