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 <[email protected]>
Reviewed-by: Konrad Dybcio <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

1 files changed, 171 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
index b608b82dff03..ff1e6a674913 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;
+		};
+	};
+};