ARM: dts: am335x-pocketbeagle: Fix mmc0 Write Protect

PATCH Superseded Drew Fustini 1 participant 1 message Jun 9, 2020 Device tree bindings

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Drew Fustini

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2020-06-09 21:33 UTC #0 lore raw

PATCH 1/1 ARM: dts: am335x-pocketbeagle: Fix mmc0 Write Protect

AM3358 pin mcasp0_aclkr (ZCZ ball B13) [0] is routed to P1.13 header [1] Mode 4 of this pin is mmc0_sdwp (SD Write Protect). A signal connected to P1.13 may accidentally trigger mmc0 write protection. To avoid this situation, do not put mcasp0_aclkr in mode 4 (mmc0_sdwp) by default.

[0] http://www.ti.com/lit/ds/symlink/am3358.pdf
[1] https://github.com/beagleboard/pocketbeagle/wiki/System-Reference-Manual#531_Expansion_Headers

Fixes 047905376a16 (ARM: dts: Add am335x-pocketbeagle)

Signed-off-by Robert Nelson <[email protected]>

Signed-off-by Drew Fustini <[email protected]>

---
 arch/arm/boot/dts/am335x-pocketbeagle.dts | 1 -
 1 file changed, 1 deletion(-)

arch/arm/boot/dts/am335x-pocketbeagle.dts +0 -1

index 4da719098028..f0b222201b86 100644
@@ -88,7 +88,6 @@ AM33XX_PADCONF(AM335X_PIN_MMC0_DAT2, PIN_INPUT_PULLUP, MUX_MODE0)
                        AM33XX_PADCONF(AM335X_PIN_MMC0_DAT3, PIN_INPUT_PULLUP, MUX_MODE0)
                        AM33XX_PADCONF(AM335X_PIN_MMC0_CMD, PIN_INPUT_PULLUP, MUX_MODE0)
                        AM33XX_PADCONF(AM335X_PIN_MMC0_CLK, PIN_INPUT_PULLUP, MUX_MODE0)
-                       AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKR, PIN_INPUT, MUX_MODE4)           /* (B12) mcasp0_aclkr.mmc0_sdwp */
                >;
        };

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