tree 07a2386cf7bf20d8ac676f1eb5ebff87c8add303
parent d2b64bd50ded120cd296d49b8abcae892960280b
author Marcel Ziswiler <marcel.ziswiler@toradex.com> 1490401102 +0100
committer Tom Warren <twarren@nvidia.com> 1491086704 -0700

mmc: tegra: allow disabling external clock loopback

Introduce CONFIG_TEGRA124_MMC_DISABLE_EXT_LOOPBACK to disable the external clock
loopback and use the internal one on SDMMC3 as per the SDMMC_VENDOR_MISC_CNTRL_0
register's SDMMC_SPARE1 bits being set to 0xfffd according to the TRM.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>