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(parent: 99a9344) | patch
mmc: sdhci: sdhci-pci-o2micro: Check if controller supports 8-bit width
authorRaul E Rangel <rrangel@chromium.org>
Mon, 17 Jun 2019 20:10:13 +0000 (14:10 -0600)
committerUlf Hansson <ulf.hansson@linaro.org>
Tue, 18 Jun 2019 11:39:03 +0000 (13:39 +0200)
commitde23f0b757766d9fae59df97da6e8bdc5b231351
tree3a255290b5c8dadca18b283d40e659806bcc7536tree | snapshot
parent99a934443d9282b92f721e5d0c6ec5bdee10fbcbcommit | diff
mmc: sdhci: sdhci-pci-o2micro: Check if controller supports 8-bit width

The O2 controller supports 8-bit EMMC access.

JESD84-B51 section A.6.3.a defines the bus testing procedure that
`mmc_select_bus_width()` implements. This is used to determine the actual
bus width of the eMMC.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
drivers/mmc/host/sdhci-pci-o2micro.c diff | blob | history
Domain: System / Kernel;