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| author | Suneel Garapati <suneel.garapati@xilinx.com> | 2015-06-09 10:31:50 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2015-08-17 12:32:41 +0300 |
| commit | d1955c3a9a1d89c53c9e7ce3b87799f8db1855c1 (patch) | |
| tree | b599c2a9e9ccfdd317c3bcc31879648bf5368602 /drivers/mmc/host/sdhci.c | |
| parent | 6464b71409511939efce1ae4fb4ec6e3483b11b2 (diff) | |
| download | linux-d1955c3a9a1d89c53c9e7ce3b87799f8db1855c1.tar.xz | |
mmc: sdhci: add quirk SDHCI_QUIRK_CLOCK_DIV_ZERO_BROKEN
adds quirk for controllers whose clock divider zero is broken,
sdhci_set_clock function will incorporate this modification.
Signed-off-by: Suneel Garapati <suneel.garapati@xilinx.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 1dbe93232030..2ae8415e59f8 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1210,6 +1210,9 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) } real_div = div; div >>= 1; + if ((host->quirks2 & SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN) + && !div && host->max_clk <= 25000000) + div = 1; } } else { /* Version 2.00 divisors must be a power of 2. */ |