From: David Bauer Subject: arm64: dts: rockchip: disable UHS modes for NanoPi R4S The NanoPi R4S leaves the SD card in 1.8V signalling when rebooting while U-Boot requires the card to be in 3.3V mode. Remove UHS support from the SD controller so the card remains in 3.3V mode. This reduces transfer speeds but ensures a reboot whether from userspace or following a kernel panic is always working. Signed-off-by: David Bauer --- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts +++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts @@ -335,7 +335,6 @@ sd-uhs-sdr12; sd-uhs-sdr25; sd-uhs-sdr50; - sd-uhs-sdr104; vmmc-supply = <&vcc_sd>; vqmmc-supply = <&vcc_sdio>; status = "okay"; --- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts @@ -112,6 +112,11 @@ status = "disabled"; }; +&sdmmc { + /delete-property/ sd-uhs-sdr104; + cap-sd-highspeed; +}; + &u2phy0_host { phy-supply = <&vdd_5v>; };