linux-kernel - [PATCH 5/5] arm64: dts: exynosautov920: enable support for ufs device

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Message-ID: <20250702013316.2837427-6-sowon.na@samsung.com>
Date: Wed,  2 Jul 2025 10:33:11 +0900
From: Sowon Na <sowon.na@...sung.com>
To: robh@...nel.org, krzk@...nel.org, conor+dt@...nel.org, vkoul@...nel.org,
	alim.akhtar@...sung.com, kishon@...nel.org
Cc: krzk+dt@...nel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	sowon.na@...sung.com
Subject: [PATCH 5/5] arm64: dts: exynosautov920: enable support for ufs
 device

The exynosautov920 uses v3.1 UFS device.
Add ufs node for ExynosAutov920 SoC.
And enable ufs_phy and ufs devices with ufs_fixed_vcc_reg regulator for
ExynosAutov920 SADK.

Signed-off-by: Sowon Na <sowon.na@...sung.com>
---
 .../boot/dts/exynos/exynosautov920-sadk.dts   | 17 ++++++++++++
 .../arm64/boot/dts/exynos/exynosautov920.dtsi | 27 +++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts b/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts
index a397f068ed53..f979cc1ae6a1 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts
+++ b/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts
@@ -52,6 +52,14 @@ memory@...00000 {
 		      <0x8 0x80000000 0x1 0xfba00000>,
 		      <0xa 0x00000000 0x2 0x00000000>;
 	};
+
+	ufs_fixed_vcc_reg: regulator-0 {
+		compatible = "regulator-fixed";
+		regulator-name = "ufs-vcc";
+		gpio = <&gpg3 2 GPIO_ACTIVE_HIGH>;
+		regulator-boot-on;
+		enable-active-high;
+	};
 };
 
 &pinctrl_alive {
@@ -83,6 +91,15 @@ &usi_0 {
 	status = "okay";
 };
 
+&ufs_0 {
+	status = "okay";
+	vcc-supply = <&ufs_fixed_vcc_reg>;
+};
+
+&ufs_0_phy {
+	status = "okay";
+};
+
 &xtcxo {
 	clock-frequency = <38400000>;
 };
diff --git a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
index 0fdf2062930a..f787c28fb0d5 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
@@ -1426,6 +1426,12 @@ cmu_hsi2: clock-controller@...00000 {
 				      "ethernet";
 		};
 
+		syscon_hsi2: syscon@...00000 {
+			compatible = "samsung,exynosautov920-hsi2-sysreg",
+				     "syscon";
+			reg = <0x16c00000 0x800>;
+		};
+
 		pinctrl_hsi2: pinctrl@...10000 {
 			compatible = "samsung,exynosautov920-pinctrl";
 			reg = <0x16c10000 0x10000>;
@@ -1438,6 +1444,27 @@ pinctrl_hsi2ufs: pinctrl@...20000 {
 			interrupts = <GIC_SPI 603 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		ufs_0: ufs@...00000 {
+			compatible = "samsung,exynosautov920-ufs";
+			reg = <0x16e00000 0x100>,
+			      <0x16e01100 0x400>,
+			      <0x16e80000 0x8000>,
+			      <0x16d08000 0x800>;
+			reg-names = "hci", "vs_hci", "unipro", "ufsp";
+			interrupts = <GIC_SPI 613 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu_hsi2 CLK_MOUT_HSI2_UFS_EMBD_USER>,
+				 <&cmu_hsi2 CLK_MOUT_HSI2_NOC_UFS_USER>;
+			clock-names = "core_clk", "sclk_unipro_main";
+			freq-table-hz = <0 0>, <0 0>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&ufs_rst_n &ufs_refclk_out>;
+			phys = <&ufs_0_phy>;
+			phy-names = "ufs-phy";
+			samsung,sysreg = <&syscon_hsi2 0x710>;
+			dma-coherent;
+			status = "disabled";
+		};
+
 		ufs_0_phy: phy@...04000 {
 			compatible = "samsung,exynosautov920-ufs-phy";
 			reg = <0x16e04000 0x4000>;
-- 
2.45.2