Nitrax Posted October 4, 2023 Share Posted October 4, 2023 I changed this in the dt and got more than double the speeds from my Samsung U3 SD card: However I have no idea what the process of getting this into the kernel source looks like. --- rk3399-rock-pi-4b.dts 2023-10-04 15:36:05.031221270 +0200 +++ rk3399-rock-pi-4b-mod.dts 2023-10-04 00:34:15.773888431 +0200 @@ -342,6 +342,7 @@ disable-wp; pinctrl-names = "default"; pinctrl-0 = <0x26 0x27 0x28 0x29>; + sd-uhs-sdr104; phandle = <0xce>; }; 0 Quote Link to comment Share on other sites More sharing options...
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