arm64: dts: rockchip: add (but disabled) SFC node for Radxa ROCK 5A

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@radxa.com>
Link: https://lore.kernel.org/r/20240623023329.1044-2-naoki@radxa.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
index c671a61d3aef54b580311b4d2610b3a1219d3846..4cc1790ebd0819138b44add3e0cb45bbd0dddfaa 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
@@ -376,6 +376,19 @@
        status = "okay";
 };
 
+&sfc {
+       pinctrl-names = "default";
+       pinctrl-0 = <&fspim0_pins>;
+
+       flash@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>;