target/linux/rockchip/patches-5.15/105-nanopi-r4s-sd-signalling.patch

   1 From: David Bauer <mail@david-bauer.net>
   2 Subject: arm64: dts: rockchip: disable UHS modes for NanoPi R4S
   3
   4 The NanoPi R4S leaves the SD card in 1.8V signalling when rebooting
   5 while U-Boot requires the card to be in 3.3V mode.
   6
   7 Remove UHS support from the SD controller so the card remains in 3.3V
   8 mode. This reduces transfer speeds but ensures a reboot whether from
   9 userspace or following a kernel panic is always working.
  10
  11 Signed-off-by: David Bauer <mail@david-bauer.net>
  12
  13 --- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
  14 +++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
  15 @@ -335,7 +335,6 @@
  16         sd-uhs-sdr12;
  17         sd-uhs-sdr25;
  18         sd-uhs-sdr50;
  19 -       sd-uhs-sdr104;
  20         vmmc-supply = <&vcc_sd>;
  21         vqmmc-supply = <&vcc_sdio>;
  22         status = "okay";
  23 --- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
  24 +++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
  25 @@ -121,6 +121,11 @@
  26         status = "disabled";
  27  };
  28
  29 +&sdmmc {
  30 +       /delete-property/ sd-uhs-sdr104;
  31 +       cap-sd-highspeed;
  32 +};
  33 +
  34  &u2phy0_host {
  35         phy-supply = <&vdd_5v>;
  36  };