4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jerome Brunet <jbru...@baylibre.com>
commit d5b4885b1dff72ac670b518cfeaac719d768bd4d upstream.
There is a problem with the sd-uhs mode when doing a soft reboot.
Switching back from 1.8v to 3.3v messes with the card, which no longer
respond (timeout errors). According to the specification, we should
perform a card reset (power cycling the card) but this is something we
cannot control on this design.
Then the only solution to restore the communication with the card is an
"unplug-plug" which is not acceptable
Until we find a solution, if any, disable the sd-uhs modes on this design.
For the people using uhs at the moment, there will a performance drop as
a result.
Fixes: 3cde63ebc85c ("ARM64: dts: meson-gxl: libretech-cc: enable high speed
modes")
Signed-off-by: Jerome Brunet <jbru...@baylibre.com>
Cc: sta...@vger.kernel.org
Signed-off-by: Kevin Hilman <khil...@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts | 3 ---
1 file changed, 3 deletions(-)
--- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
@@ -234,9 +234,6 @@
bus-width = <4>;
cap-sd-highspeed;
- sd-uhs-sdr12;
- sd-uhs-sdr25;
- sd-uhs-sdr50;
max-frequency = <100000000>;
disable-wp;
