linux-kernel - [PATCH v2] arm64: dts: rockchip: enable UFS controller on FriendlyElec NanoPi M5

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Message-Id: <20251201-nanopi-m5-ufs-v2-1-ece9c0ee17c4@gmail.com>
Date: Mon, 01 Dec 2025 15:35:38 +0400
From: Alexey Charkov <alchark@...il.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Alexey Charkov <alchark@...il.com>
Subject: [PATCH v2] arm64: dts: rockchip: enable UFS controller on
 FriendlyElec NanoPi M5

The NanoPi M5 board supports pluggable UFS modules using the UFSHC
inside its Rockchip RK3576 SoC.

Enable the respective devicetree node and add its supply regulators.

Link: https://wiki.friendlyelec.com/wiki/images/9/97/NanoPi_M5_LP5_2411_SCH.pdf
Signed-off-by: Alexey Charkov <alchark@...il.com>
---
Changes in v2:
- Describe UFS supply regulators
- Add link to schematic
- Link to v1: https://lore.kernel.org/r/20251127-nanopi-m5-ufs-v1-1-0d28d157712c@gmail.com
---
 arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts | 27 +++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts
index cce34c541f7c..4f2930cff70a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts
@@ -110,6 +110,24 @@ vcc12v_dcin: regulator-vcc12v-dcin {
 		regulator-name = "vcc12v_dcin";
 	};
 
+	vcc1v2_ufs_vccq: regulator-vcc1v2-ufs-vccq {
+		compatible = "regulator-fixed";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		regulator-name = "vcc1v2_ufs_vccq";
+		vin-supply = <&vcc5v0_sys_s5>;
+		en-supply = <&vcc_3v3_s3>;
+	};
+
+	vcc1v8_ufs_vccq2: regulator-vcc1v8-ufs-vccq2 {
+		compatible = "regulator-fixed";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-name = "vcc1v8_ufs_vccq2";
+		vin-supply = <&vcc_1v8_s3>;
+		en-supply = <&vdda_1v2_s0>;
+	};
+
 	vcc3v3_m2_keym: regulator-vcc3v3-m2-keym {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -906,6 +924,15 @@ &uart0 {
 	status = "okay";
 };
 
+&ufshc {
+	vcc-supply = <&vcc_3v3_s3>;
+	vccq-supply = <&vcc1v2_ufs_vccq>;
+	vccq2-supply = <&vcc1v8_ufs_vccq2>;
+	vdd-hba-supply = <&vdda_1v2_s0>;
+
+	status = "okay";
+};
+
 &usbdp_phy {
 	status = "okay";
 };

---
base-commit: 7d31f578f3230f3b7b33b0930b08f9afd8429817
change-id: 20251127-nanopi-m5-ufs-52f2c5070167

Best regards,
-- 
Alexey Charkov <alchark@...il.com>