[PATCH] arm64: dts: allwinner: a523: fix SD card detect pull resistor

[Andre Przywara]

Trying to use the SD card on the Radxa board revealed that the card
detect wouldn't work as expected (insert not detected). Looking at the
schematic shows that the pull-up resistor is actually not populated
("NC"), and the transistor just pulls the GPIO pin to GND, but it's
floating otherwise.
So using the pull-down flag is definitely wrong, we need the internal
pull up to get a reliable signal. The same is true for the Avaota board
(there is no transistor there, but it's floating in the same way). There
is no schematic for the X96QPro+ board, but experiments show it's the
same behaviour.

So change the GPIO flag for the card detect GPIO property to activate
the pull-up resistor for that pin.

Fixes: 80e0fb4e491b ("arm64: dts: allwinner: a523: add Radxa A5E support")
Signed-off-by: Andre Przywara <andre.przywara at arm.com>
---
Hi,

please let me know if I should split this up into 3 patches, with proper
Fixes: tags, or if you can maybe squash this into the original commits
still?

Cheers,
Andre

 arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts | 2 +-
 arch/arm64/boot/dts/allwinner/sun55i-h728-x96qpro+.dts  | 2 +-
 arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts b/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
index 03c9a9ef5adc2..2d2f3af91d05e 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
@@ -56,7 +56,7 @@ &ehci1 {
 
 &mmc0 {
 	vmmc-supply = <&reg_cldo3>;
-	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_DOWN)>; /* PF6 */
+	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PF6 */
 	bus-width = <4>;
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-h728-x96qpro+.dts b/arch/arm64/boot/dts/allwinner/sun55i-h728-x96qpro+.dts
index c0bce3f4fa925..59db103546f65 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-h728-x96qpro+.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-h728-x96qpro+.dts
@@ -56,7 +56,7 @@ &ehci1 {
 
 &mmc0 {
 	vmmc-supply = <&reg_vcc3v3>;
-	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_DOWN)>; /* PF6 */
+	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PF6 */
 	bus-width = <4>;
 	disable-wp;
 	status = "okay";
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
index 85a546aecdbe1..dea2acc1849bb 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
@@ -66,7 +66,7 @@ &ehci1 {
 
 &mmc0 {
 	vmmc-supply = <&reg_cldo3>;
-	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_DOWN)>; /* PF6 */
+	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PF6 */
 	bus-width = <4>;
 	status = "okay";
 };

base-commit: 1e5a69d67d1b3c55c9b0cd3933af1436b5d52aa1
-- 
2.46.3