4.20-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit ac9c908eecde3ed252cb1d67fc79b3c1346f76bc ]
Wrong polarity of card detect GPIO pin leads to the system not booting from external mmc, if the back cover of N900 is closed. When the cover is open the system boots fine.
This wasn't noticed before, because of a bug, which was fixed by commit e63201f19 (mmc: omap_hsmmc: Delete platform data GPIO CD and WP).
Kernels up to 4.19 ignored the card detect GPIO from DT.
Fixes: e63201f19438 ("mmc: omap_hsmmc: Delete platform data GPIO CD and WP") Signed-off-by: Arthur Demchenkov spinal.by@gmail.com Signed-off-by: Tony Lindgren tony@atomide.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/boot/dts/omap3-n900.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index 182a53991c90..826920e6b878 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -814,7 +814,7 @@ /* For debugging, it is often good idea to remove this GPIO. It means you can remove back cover (to reboot by removing battery) and still use the MMC card. */ - cd-gpios = <&gpio6 0 GPIO_ACTIVE_HIGH>; /* 160 */ + cd-gpios = <&gpio6 0 GPIO_ACTIVE_LOW>; /* 160 */ };
/* most boards use vaux3, only some old versions use vmmc2 instead */