With these properties added, sd cards inserted into hikey can work at UHS mode if they have such capability.
Note, this depends on HiKey UHS-SD support patch [1] to work properly. If you didn't add this patch, but added sd-uhs- properties into dwmmc_1, then sd cards cannot work. As of this post, patch [1] has been integrated into maintainer's next branch [2]. [1]: [V4] mmc: dw_mmc-k3: UHS-SD card for Hisilicon Hikey, https://patchwork.kernel.org/patch/9262515/ [2]: https://git.linaro.org/people/ulf.hansson/mmc.git next commit a8a5b2909cfc ("mmc: dw_mmc: k3: UHS-SD card for Hisilicon Hikey") cc: Ulf Hansson <[email protected]> cc: Jaehoon Chung <[email protected]> cc: Jinguojun <[email protected]> Signed-off-by: Guodong Xu <[email protected]> --- arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi index 63608e9..17839db 100644 --- a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi +++ b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi @@ -785,6 +785,9 @@ card-detect-delay = <200>; hisilicon,peripheral-syscon = <&ao_ctrl>; cap-sd-highspeed; + sd-uhs-sdr12; + sd-uhs-sdr25; + sd-uhs-sdr50; reg = <0x0 0xf723e000 0x0 0x1000>; interrupts = <0x0 0x49 0x4>; #address-cells = <0x1>; -- 1.9.1
