[PATCH 2/3] arm64: dts: rockchip: add (but disabled) SFC node for Radxa ROCK 5A

[FUKAUMI Naoki]

This commit adds SFC node for Radxa ROCK 5A.

since sdhci and sfc on RK3588s share pins(i.e. exclusive), it cannot
be enabled both nodes at the same time. so status = "okay" is omitted
here.

you may be able to enable sfc (and disable sdhci) by fdt overlay.

SPI NOR flash chip may vary, so use safe(lowest) spi-max-frequency.

Signed-off-by: FUKAUMI Naoki <naoki at radxa.com>
---
 arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
index c0f6a4b1493f..03ed48246d36 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
@@ -377,6 +377,19 @@ &sdmmc {
 	status = "okay";
 };
 
+&sfc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&fspim0_pins>;
+
+	flash at 0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <104000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <1>;
+	};
+};
+
 &spi2 {
 	status = "okay";
 	assigned-clocks = <&cru CLK_SPI2>;
-- 
2.43.0