Fix the probe if hs400-1_8v / hs400-1_2v is used in the dts and mmc-hs400-enhanced-strobe isn't set. Kernel errors report when on boot and reboot and eMMC device not detect randomly. With log output below. [ 1.802342] mmc1: SDHCI controller on fe330000.sdhci [fe330000.sdhci] using ADMA [ 2.007581] mmc1: mmc_select_hs200 failed, error -110 [ 2.007589] mmc1: error -110 whilst initialising MMC card [ 2.413559] mmc1: mmc_select_hs200 failed, error -110 [ 2.413562] mmc1: error -110 whilst initialising MMC card [ 3.183343] mmc1: Command Queue Engine enabled [ 3.183355] mmc1: new HS400 MMC card at address 0001 [ 3.197163] mmcblk1: mmc1:0001 DG4008 7.28 GiB Current implementation called the mmc_select_hs200 first, and after init upgrade to hs400. Somehow the eMMC chip randomly crashed here. Patch has been tested with customized Rockchip rk3399. Patch 1/3 preparation move mmc_select_hs400() in between hs400es and hs200, to be able to use static functions defined previously below the mmc_select_hs400(). Patch 2/3 functionally change mmc_select_timing() call mmc_select_hs400 if EXT_CSD_CARD_TYPE_HS400 is set the mmc_avail_type mmc_select_hs400() fixup bus-width check fixup set power 1.8v or 1.2v; only one because of host-cap2 is checked in mmc_select_card(). Add drop-down to hs-mode. Call hs400 prepare tuning (if ops callback) and mmc_execute_tuning() Patch 3/3 cleanup Remove MMC_CAP2_HS200_1_8V_SDR / MMC_CAP2_HS200_1_2V_SDR from host->caps2 when mmc-hs400-1_8v or mmc-hs400-1_2v is used in the dts. Signed-off-by: Chris Ruehl <chris.ruehl@xxxxxxxxxxxx> ---
