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libubb/mmcclk.c (mmcclk_start): also reset the MMC controller

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This commit is contained in:
Werner Almesberger 2013-01-15 14:07:31 -03:00
parent a5fbf55419
commit 72f2125287
1 changed files with 4 additions and 0 deletions
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4
libubb/mmcclk.c
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@ -60,6 +60,10 @@ void mmcclk_start(struct mmcclk *dsc)
{ {
MSCCDR = dsc->clkdiv; /* set controller clock */ MSCCDR = dsc->clkdiv; /* set controller clock */
CLKGR &= ~(1 << 7); /* enable MSC clock */ CLKGR &= ~(1 << 7); /* enable MSC clock */
MSC_STRPCL = 1 << 3; /* reset the MSC */
while (MSC_STAT & (1 << 15)); /* wait until reset finishes */
MSC_CLKRT = dsc->clkrt; /* set bus clock */ MSC_CLKRT = dsc->clkrt; /* set bus clock */
MSC_STRPCL = 2; /* start MMC bus clock output */ MSC_STRPCL = 2; /* start MMC bus clock output */
} }