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

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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>
This commit is contained in:
Hao Zhang 2025-05-09 18:14:18 +08:00 committed by Heiko Stuebner
parent c895c32bf1
commit f9c7ba983f
1 changed files with 1 additions and 3 deletions
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4
arch/arm/boot/dts/rockchip/rv1126-sonoff-ihost.dtsi
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@ -342,16 +342,14 @@ &saradc {
&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";