[PATCH] arm64: dts: meson: fix mmc0 tuning error on Khadas VIM3

[PATCH] arm64: dts: meson: fix mmc0 tuning error on Khadas VIM3

[Christian Hewitt]

Similar to other G12B devices using the W400 dtsi, I see reports of mmc0
tuning errors on VIM3 after a few hours uptime:

[12483.917391] mmc0: tuning execution failed: -5
[30535.551221] mmc0: tuning execution failed: -5
[35359.953671] mmc0: tuning execution failed: -5
[35561.875332] mmc0: tuning execution failed: -5
[61733.348709] mmc0: tuning execution failed: -5

I do not see the same on VIM3L, so remove sd-uhs-sdr50 from the common dtsi
to silence the error, then (re)add it to the VIM3L dts.

Signed-off-by: Chrisitan Hewitt <christianshewitt@gmail.com>
---
 arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi     | 1 -
 arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts | 4 ++++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi b/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
index 27408c10a811..ddfd52b88002 100644
--- a/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
@@ -293,7 +293,6 @@
 
 	bus-width = <4>;
 	cap-sd-highspeed;
-	sd-uhs-sdr50;
 	max-frequency = <100000000>;
 
 	non-removable;
diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
index dbbf29a0dbf6..026b21708b07 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
@@ -88,6 +88,10 @@
 	status = "okay";
 };
 
+&sd_emmc_a {
+	sd-uhs-sdr50;
+};
+
 &usb {
 	phys = <&usb2_phy0>, <&usb2_phy1>;
 	phy-names = "usb2-phy0", "usb2-phy1";
-- 
2.17.1


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Re: [PATCH] arm64: dts: meson: fix mmc0 tuning error on Khadas VIM3

[Kevin Hilman]

Christian Hewitt <christianshewitt@gmail.com> writes:

> Similar to other G12B devices using the W400 dtsi, I see reports of mmc0
> tuning errors on VIM3 after a few hours uptime:
>
> [12483.917391] mmc0: tuning execution failed: -5
> [30535.551221] mmc0: tuning execution failed: -5
> [35359.953671] mmc0: tuning execution failed: -5
> [35561.875332] mmc0: tuning execution failed: -5
> [61733.348709] mmc0: tuning execution failed: -5
>
> I do not see the same on VIM3L, so remove sd-uhs-sdr50 from the common dtsi
> to silence the error, then (re)add it to the VIM3L dts.
>
> Signed-off-by: Chrisitan Hewitt <christianshewitt@gmail.com>

Fixes?

Kevin

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Re: [PATCH] arm64: dts: meson: fix mmc0 tuning error on Khadas VIM3

[Christian Hewitt]

> On 21 Jul 2020, at 2:24 am, Kevin Hilman <khilman@baylibre.com> wrote:
> 
> Christian Hewitt <christianshewitt@gmail.com> writes:
> 
>> Similar to other G12B devices using the W400 dtsi, I see reports of mmc0
>> tuning errors on VIM3 after a few hours uptime:
>> 
>> [12483.917391] mmc0: tuning execution failed: -5
>> [30535.551221] mmc0: tuning execution failed: -5
>> [35359.953671] mmc0: tuning execution failed: -5
>> [35561.875332] mmc0: tuning execution failed: -5
>> [61733.348709] mmc0: tuning execution failed: -5
>> 
>> I do not see the same on VIM3L, so remove sd-uhs-sdr50 from the common dtsi
>> to silence the error, then (re)add it to the VIM3L dts.
>> 
>> Signed-off-by: Chrisitan Hewitt <christianshewitt@gmail.com>
> 
> Fixes?
> 
> Kevin

I’ll resend v2 with the fixes tag(s). Thanks.

Christian
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