Re: [U-Boot] [PATCH] Fix RK3328-evb Floating GPIO0_D6 - pull up - 4ma

26 Jul 2019

Hi Mister,
NAK for this patch.
There is a dts for rock64 now.
For the pinctrl, if this is a sdmmc IO, it would prefer to set the io in
sdmmc node.
One question is, the fix regulator driver should init this GPIO to LOW or
HIGH
as required which is not floating, does that not enough?
Thanks,
- Kever
Mister Fix-IT mrfixit2001@gmail.com 于2019年5月11日周六 上午3:01写道：
...
Pin GPIO0_30 (D6) is left floating. In the case of the new revision of
Pine64 Rock64 Rev3, this pin needs to be pulled up 4ma. Otherwise
uboot fails to boot from sd stating "Card did not respond to voltage
select".

arch/arm/dts/rk3328-evb.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/dts/rk3328-evb.dts b/arch/arm/dts/rk3328-evb.dts
index ec594a8452e..c242a8364c5 100644
--- a/arch/arm/dts/rk3328-evb.dts
+++ b/arch/arm/dts/rk3328-evb.dts
@@ -25,6 +25,8 @@
                compatible = "regulator-fixed";
                regulator-name = "vcc3v3";
                gpio = <&gpio0 30 GPIO_ACTIVE_LOW>;

          pinctrl-names = "default";


          pinctrl-0 = <&sdmmc0m1_pwren>;
          regulator-always-on;
          regulator-boot-on;
  };




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Re: [U-Boot] [PATCH] Fix RK3328-evb Floating GPIO0_D6 - pull up - 4ma

Kever Yang