diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2014-10-06 16:23:07 +0400 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-10-06 17:08:14 +0400 |
| commit | 8024379e0ae43b1154978c2291ce20f772cbb3bd (patch) | |
| tree | 4bb43883f5e8f845a87bacb25702dd357670b95a /drivers/mmc | |
| parent | 7dafca835a459ab31792d9def69ed30cf6dc08ab (diff) | |
| download | linux-8024379e0ae43b1154978c2291ce20f772cbb3bd.tar.xz | |
mmc: sdhci-acpi: Fix Braswell eMMC timeout clock frequency
Braswell eMMC host controller specifies an incorrect
timeout clock frequncy in the capabilities registers.
The correct value is 1 MHz. A similar fix was done
for sdhci-pci, however in the sdhci-acpi case the
HID/UID is not unique so the capabilities register
values are matched also.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-acpi.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index 7548261221b5..9cccc0e89b04 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -137,6 +137,11 @@ static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev, /* Platform specific code during emmc proble slot goes here */ + if (hid && uid && !strcmp(hid, "80860F14") && !strcmp(uid, "1") && + sdhci_readl(host, SDHCI_CAPABILITIES) == 0x446cc8b2 && + sdhci_readl(host, SDHCI_CAPABILITIES_1) == 0x00000807) + host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */ + return 0; } |