Am Montag, 22. August 2022, 09:41:39 CEST schrieb Jensen Huang:
> Internal pull-down for strobe line (GRF_EMMCPHY_CON2[9]) was disabled
> by commit 8b5c2b45b8f0, which causes I/O error in HS400 mode.
>
> Tested on NanoPC-T4.
>
> Fixes: 8b5c2b45b8f0 ("phy: rockchip: set pulldown for strobe line in dts")
> Signed-off-by: Jensen Huang <jensenhuang@xxxxxxxxxxxxxxx>
ok, so this looks like it restores previous functionality.
I'm just wondering as the "offending" patch is from 2020, why this
only turns up now. Any ideas?
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> index 9d5b0e8c9cca..9491cafbbaa3 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> @@ -1561,6 +1561,7 @@ emmc_phy: phy@f780 {
> clock-names = "emmcclk";
> drive-impedance-ohm = <50>;
> #phy-cells = <0>;
> + rockchip,enable-strobe-pulldown;
> status = "disabled";
> };
>
>
