ARM: dts: rockchip: Sonoff-iHost: adjust SDIO for stability

Reduce max-frequency from 50MHz to 25MHz to improve WiFi module stability
on some Sonoff iHost units. Remove unsupported or redundant properties,
and keep only minimal, validated configuration.

Signed-off-by: Hao Zhang <hao.zhang@coolkit.cn>
Link: https://lore.kernel.org/r/20250509101419.460473-2-hao.zhang@coolkit.cn
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm/boot/dts/rockchip/rv1126-sonoff-ihost.dtsi b/arch/arm/boot/dts/rockchip/rv1126-sonoff-ihost.dtsi
index 9a87dc0d5f66b67da3fec0bba8820845a2f7b1ce..088a069bb1a82bf10f4986a0d9767fa6ca9073cb 100644 (file)
--- a/arch/arm/boot/dts/rockchip/rv1126-sonoff-ihost.dtsi
+++ b/arch/arm/boot/dts/rockchip/rv1126-sonoff-ihost.dtsi
@@ -342,16 +342,14 @@
 
 &sdio {
        bus-width = <4>;
-       cap-sd-highspeed;
        cap-sdio-irq;
        keep-power-in-suspend;
-       max-frequency = <50000000>;
+       max-frequency = <25000000>;
        mmc-pwrseq = <&sdio_pwrseq>;
        non-removable;
        pinctrl-names = "default";
        pinctrl-0 = <&sdmmc1_clk &sdmmc1_cmd &sdmmc1_bus4>;
        rockchip,default-sample-phase = <90>;
-       sd-uhs-sdr50;
        vmmc-supply = <&vcc3v3_sd>;
        vqmmc-supply = <&vcc_1v8>;
        status = "okay";