drivers/storage/bayhub: Add support for eMMC tuning
The Bayhub part has support for hardware tuning, but it only supports it
at 4 bits.
I added a new sdhci_send_tuning_cmd because sdhci_send_command_bounced
requires a data buffer, sets up DMA and waits for a different interrupt
then the tuning command returns. Instead of adding a bunch of
conditionals to sdhci_send_tuning_cmd, I added a new function.
BRANCH=grunt
BUG=b:122244718
TEST=Verified it compiles on grunt
Change-Id: I19ef97b474d1597a55136aa55d4f3e4f992938b9
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/depthcharge/+/1655552
Reviewed-by: Julius Werner <jwerner@chromium.org>
7 files changed
