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ARM: OMAP3: Add support for configuring MMC pins as GPIO pins

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Some devices are using the MMC1 pins 4..8 as GPIO pins, and in
this case they need to be configured for 1.8V IO voltage if not
done by the bootloader as otherwise some devices like smsc911x
won't work properly.

Let's also make sure this register is saved and restored for
idle.

Cc: Tim Nordell <tim.nordell@logicpd.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren
2015-05-20 09:23:43 -07:00
parent b787f68c36
commit b96b332fd5
3 changed files with 28 additions and 0 deletions
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3
arch/arm/mach-omap2/control.h
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@@ -231,6 +231,9 @@
#define OMAP343X_PADCONF_ETK_D15 OMAP343X_PADCONF_ETK(17)
/* 34xx GENERAL_WKUP register offsets */
#define OMAP34XX_CONTROL_WKUP_CTRL (OMAP343X_CONTROL_GENERAL_WKUP - 0x4)
#define OMAP36XX_GPIO_IO_PWRDNZ BIT(6)
#define OMAP343X_CONTROL_WKUP_DEBOBSMUX(i) (OMAP343X_CONTROL_GENERAL_WKUP + \
0x008 + (i))
#define OMAP343X_CONTROL_WKUP_DEBOBS0 (OMAP343X_CONTROL_GENERAL_WKUP + 0x008)