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| author | Bryan Buckley <bryan.buckley@ti.com> | 2011-09-30 22:05:55 +0400 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2011-09-30 22:05:55 +0400 |
| commit | 3696d303d6a39f916f9ace37d79e3db7937c68a7 (patch) | |
| tree | cb771a880cb0120e634c148450598bbcb5584a14 /arch/arm/mach-omap2/board-2430sdp.c | |
| parent | a102a9ece5489e1718cd7543aa079082450ac3a2 (diff) | |
| download | linux-3696d303d6a39f916f9ace37d79e3db7937c68a7.tar.xz | |
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')
0 files changed, 0 insertions, 0 deletions