From: Detlev Casanova <detlev.casanova@collabora.com>
Date: Fri, 28 Feb 2025 14:50:48 +0000 (-0500)
Subject: arm64: dts: rockchip: Add SPI NOR device on the ROCK 4D
X-Git-Tag: v6.15-rc1~159^2~23^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba82f56bbf20e4166c988621cd0507509872848e;p=thirdparty%2Flinux.git

arm64: dts: rockchip: Add SPI NOR device on the ROCK 4D

The SPI NOR chip is connected on the FSPI0 core, so enable the sfc0 node
and add the flash device to it.

The SPI NOR won't work at higher speed than 50 MHz, specify the limit.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Link: https://lore.kernel.org/r/20250228145304.581349-3-detlev.casanova@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
index 0ba0be9807545..6756403111e70 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
@@ -701,6 +701,22 @@
 	status = "okay";
 };
 
+
+&sfc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&fspi0_pins &fspi0_csn0>;
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <1>;
+		vcc-supply = <&vcc_1v8_s3>;
+	};
+};
+
 &u2phy0 {
 	status = "okay";
 };