Commits
Dong Aisheng committed afb3922dace
MLK-14884 mmc: sdhci: make DDR50 tuning optionally DDR50 tuning is optinally defined in sd 3.0 spec. Per IC guys suggestion, it internally already uses a fixed optimized timing and normally does not require tuning. Make it optionally and platform can claim SDHCI_DDR50_NEEDS_TUNING support if it wants tuning. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>