linux-kernel - [PATCH v3 6/6] arm64: dts: exynos: add the WiFi/PCIe support to TM2(e) boards

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Date:   Thu, 29 Oct 2020 14:40:17 +0100
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     linux-samsung-soc@...r.kernel.org, linux-pci@...r.kernel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v3 6/6] arm64: dts: exynos: add the WiFi/PCIe support to
 TM2(e) boards

From: Jaehoon Chung <jh80.chung@...sung.com>

Add the nodes relevant to PCIe PHY and PCIe support. PCIe is used for the
WiFi interface (Broadcom Limited BCM4358 802.11ac Wireless LAN SoC).

Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
[mszyprow: rewrote commit message, reworked board/generic dts/dtsi split]
Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
---
 .../boot/dts/exynos/exynos5433-pinctrl.dtsi   |  2 +-
 .../dts/exynos/exynos5433-tm2-common.dtsi     | 24 ++++++++++++-
 arch/arm64/boot/dts/exynos/exynos5433.dtsi    | 36 +++++++++++++++++++
 3 files changed, 60 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
index 9df7c65593a1..32a6518517e5 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
@@ -329,7 +329,7 @@
 	};
 
 	pcie_bus: pcie_bus {
-		samsung,pins = "gpr3-4", "gpr3-5", "gpr3-6", "gpr3-7";
+		samsung,pins = "gpr3-4", "gpr3-5", "gpr3-6";
 		samsung,pin-function = <EXYNOS_PIN_FUNC_3>;
 		samsung,pin-pud = <EXYNOS_PIN_PULL_UP>;
 	};
diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
index 97a2f0c7c0cf..5ec447f0cf5d 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
@@ -968,6 +968,25 @@
 	bus-width = <4>;
 };
 
+&pcie {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie_bus &pcie_wlanen>;
+	vdd10-supply = <&ldo6_reg>;
+	vdd18-supply = <&ldo7_reg>;
+	assigned-clocks = <&cmu_fsys CLK_MOUT_SCLK_PCIE_100_USER>,
+			  <&cmu_top CLK_MOUT_SCLK_PCIE_100>;
+	assigned-clock-parents = <&cmu_top CLK_SCLK_PCIE_100_FSYS>,
+				 <&cmu_top CLK_MOUT_BUS_PLL_USER>;
+	assigned-clock-rates = <0>, <100000000>;
+	interrupt-map-mask = <0 0 0 0>;
+	interrupt-map = <0 0 0 0 &gic GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
+};
+
+&pcie_phy {
+	status = "okay";
+};
+
 &ppmu_d0_general {
 	status = "okay";
 	events {
@@ -1084,8 +1103,11 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&initial_ese>;
 
+	pcie_wlanen: pcie-wlanen {
+		PIN(INPUT, gpj2-0, UP, FAST_SR4);
+	};
+
 	initial_ese: initial-state {
-		PIN(INPUT, gpj2-0, DOWN, FAST_SR1);
 		PIN(INPUT, gpj2-1, DOWN, FAST_SR1);
 		PIN(INPUT, gpj2-2, DOWN, FAST_SR1);
 	};
diff --git a/arch/arm64/boot/dts/exynos/exynos5433.dtsi b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
index 0a886bb6c806..1d2442ac432c 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
@@ -1029,6 +1029,11 @@
 			reg = <0x145f0000 0x1038>;
 		};
 
+		syscon_fsys: syscon@...f0000 {
+			compatible = "syscon";
+			reg = <0x156f0000 0x1044>;
+		};
+
 		gsc_0: video-scaler@...00000 {
 			compatible = "samsung,exynos5433-gsc";
 			reg = <0x13c00000 0x1000>;
@@ -1830,6 +1835,37 @@
 				status = "disabled";
 			};
 		};
+
+		pcie_phy: pcie-phy@...80000 {
+			compatible = "samsung,exynos5433-pcie-phy";
+			reg = <0x15680000 0x1000>;
+			samsung,pmu-syscon = <&pmu_system_controller>;
+			samsung,fsys-sysreg = <&syscon_fsys>;
+			#phy-cells = <0>;
+			status = "disabled";
+		};
+
+		pcie: pcie@...00000 {
+			compatible = "samsung,exynos5433-pcie";
+			reg = <0x15700000 0x1000>, <0x156b0000 0x1000>,
+			      <0x0c000000 0x1000>;
+			reg-names = "dbi", "elbi", "config";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+			device_type = "pci";
+			interrupts = <GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu_fsys CLK_PCIE>,
+			         <&cmu_fsys CLK_PCLK_PCIE_PHY>;
+			clock-names = "pcie", "pcie_bus";
+			num-lanes = <1>;
+			num-viewport = <3>;
+			bus-range = <0x00 0xff>;
+			phys = <&pcie_phy>;
+			ranges = <0x81000000 0 0	  0x0c001000 0 0x00010000>,
+				 <0x82000000 0 0x0c011000 0x0c011000 0 0x03feefff>;
+			status = "disabled";
+		};
 	};
 
 	timer: timer {
-- 
2.17.1