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ARM: tegra: dvfs: Disable dvfs on sdmmc

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The sdhci core calls clock functions with a spinlock held, which
conflicts with the mutex in dvfs clocks.  Disable dvfs on sdmmc
for now.

Signed-off-by: Colin Cross <ccross@android.com>
Change-Id: I59c0648ab6718571794e082d1f4828f158d00031
This commit is contained in:
Colin Cross
2010-11-01 17:17:47 -07:00
parent e3ad53ad73
commit 3d89a90359
1 changed files with 10 additions and 0 deletions
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10
arch/arm/mach-tegra/tegra2_dvfs.c
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@@ -81,10 +81,20 @@ static struct dvfs dvfs_init[] = {
CPU_DVFS("cpu", 3, MHZ, 730, 760, 845, 845, 1000),
/* Core voltages (mV): 950, 1000, 1100, 1200, 1275 */
#if 0
/*
* The sdhci core calls the clock ops with a spinlock held, which
* conflicts with the sleeping dvfs api.
* For now, boards must ensure that the core voltage does not drop
* below 1V, or that the sdmmc busses are set to 44 MHz or less.
*/
CORE_DVFS("sdmmc1", 1, KHZ, 44000, 52000, 52000, 52000, 52000),
CORE_DVFS("sdmmc2", 1, KHZ, 44000, 52000, 52000, 52000, 52000),
CORE_DVFS("sdmmc3", 1, KHZ, 44000, 52000, 52000, 52000, 52000),
CORE_DVFS("sdmmc4", 1, KHZ, 44000, 52000, 52000, 52000, 52000),
#endif
CORE_DVFS("ndflash", 1, KHZ, 130000, 150000, 158000, 164000, 164000),
CORE_DVFS("nor", 1, KHZ, 0, 92000, 92000, 92000, 92000),
CORE_DVFS("ide", 1, KHZ, 0, 0, 100000, 100000, 100000),