linux-kernel - [PATCH V6 06/16] arm64: tegra: Enable PCIe slots in P3737-0000 board

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Date:   Thu, 21 Jul 2022 19:50:42 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <bhelgaas@...gle.com>, <lpieralisi@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <jingoohan1@...il.com>, <gustavo.pimentel@...opsys.com>
CC:     <kw@...ux.com>, <kishon@...com>, <linux-pci@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kthota@...dia.com>,
        <mmaddireddy@...dia.com>, <vidyas@...dia.com>, <sagar.tv@...il.com>
Subject: [PATCH V6 06/16] arm64: tegra: Enable PCIe slots in P3737-0000 board

Enable PCIe controller nodes to enable respective PCIe slots on
P3737-0000 board. Following is the ownership of slots by different
PCIe controllers.
Controller-1 : On-board Broadcom WiFi controller
Controller-4 : M.2 Key-M slot
Controller-5 : CEM form-factor x8 slot

Signed-off-by: Vidya Sagar <vidyas@...dia.com>
---
V6:
* None

V5:
* None

V4:
* Rebased on top of the previous patches

V3:
* Added 'vddio-pex-ctl-supply' property
* Added a node for C5 controller's EndPoint mode

V2:
* Addressed review comment from Krzysztof

 .../nvidia/tegra234-p3737-0000+p3701-0000.dts | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
index 02a10bb38562..dc11a4f4c10a 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
@@ -2111,4 +2111,55 @@
 
 		label = "NVIDIA Jetson AGX Orin APE";
 	};
+
+	pcie@...00000 {
+		status = "okay";
+
+		vddio-pex-ctl-supply = <&vdd_1v8_ao>;
+
+		phys = <&p2u_hsio_3>;
+		phy-names = "p2u-0";
+	};
+
+	pcie@...60000 {
+		status = "okay";
+
+		vddio-pex-ctl-supply = <&vdd_1v8_ao>;
+
+		phys = <&p2u_hsio_4>, <&p2u_hsio_5>, <&p2u_hsio_6>,
+		       <&p2u_hsio_7>;
+		phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3";
+	};
+
+	pcie@...a0000 {
+		status = "okay";
+
+		vddio-pex-ctl-supply = <&vdd_1v8_ls>;
+		vpcie3v3-supply = <&vdd_3v3_pcie>;
+		vpcie12v-supply = <&vdd_12v_pcie>;
+
+		phys = <&p2u_nvhs_0>, <&p2u_nvhs_1>, <&p2u_nvhs_2>,
+		       <&p2u_nvhs_3>, <&p2u_nvhs_4>, <&p2u_nvhs_5>,
+		       <&p2u_nvhs_6>, <&p2u_nvhs_7>;
+		phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3", "p2u-4",
+			    "p2u-5", "p2u-6", "p2u-7";
+	};
+
+	pcie-ep@...a0000 {
+		status = "disabled";
+
+		vddio-pex-ctl-supply = <&vdd_1v8_ls>;
+
+		reset-gpios = <&gpio TEGRA234_MAIN_GPIO(AF, 1) GPIO_ACTIVE_LOW>;
+
+		nvidia,refclk-select-gpios = <&gpio_aon
+					      TEGRA234_AON_GPIO(AA, 4)
+					      GPIO_ACTIVE_HIGH>;
+
+		phys = <&p2u_nvhs_0>, <&p2u_nvhs_1>, <&p2u_nvhs_2>,
+		       <&p2u_nvhs_3>, <&p2u_nvhs_4>, <&p2u_nvhs_5>,
+		       <&p2u_nvhs_6>, <&p2u_nvhs_7>;
+		phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3", "p2u-4",
+			    "p2u-5", "p2u-6", "p2u-7";
+	};
 };
-- 
2.17.1