path: root/arch/arm/mach-omap2/board-2430sdp.c
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authorBryan Buckley <bryan.buckley@ti.com>2011-09-30 11:05:55 -0700
committerTony Lindgren <tony@atomide.com>2011-09-30 11:05:55 -0700
commit3696d303d6a39f916f9ace37d79e3db7937c68a7 (patch)
treecb771a880cb0120e634c148450598bbcb5584a14 /arch/arm/mach-omap2/board-2430sdp.c
parenta102a9ece5489e1718cd7543aa079082450ac3a2 (diff)
ARM: OMAP4: MMC: fix power and audio issue, decouple USBC1 from MMC1
Remove OMAP4_USBC1_ICUSB_PWRDNZ_MASK during enable/disable PWRDNZ mode for MMC1_PBIAS and associated extended-drain MMC1 I/O cell. This is in accordance with the control module programming guide. This fixes a bug where if trying to use gpio_98 or gpio_99 and MMC1 at the same time the GPIO signal will be affected by a changing SDMMC1_VDDS. Software must keep MMC1_PBIAS cell and MMC1_IO cell PWRDNZ signals low whenever SDMMC1_VDDS ramps up/down or changes for cell protection purposes. MMC1 is based on SDMMC1_VDDS whereas USBC1 is based on SIM_VDDS therefore they can operate independently. Signed-off-by: Bryan Buckley <bryan.buckley@ti.com> Acked-by: Kishore Kadiyala <kishore.kadiyala@ti.com> Tested-by: Balaji T K <balajitk@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/board-2430sdp.c')
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