Commit 8024379e authored Oct 06, 2014 by Adrian Hunter Committed by Ulf Hansson Oct 06, 2014

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>

parent 7dafca83

drivers/mmc/host/sdhci-acpi.c

+5 −0

Original line number	Original line	Diff line number	Diff line
	@@ -137,6 +137,11 @@ static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev,

	/* Platform specific code during emmc proble slot goes here */		/* 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;		return 0;
	}		}