mmc: mediatek: add optional module reset property
This patch fixs eMMC-Access on mt7622/Bpi-64. Before we got these Errors on mounting eMMC ion R64: [ 48.664925] blk_update_request: I/O error, dev mmcblk0, sector 204800 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0 [ 48.676019] Buffer I/O error on dev mmcblk0p1, logical block 0, lost sync page write This patch adds a optional reset management for msdc. Sometimes the bootloader does not bring msdc register to default state, so need reset the msdc controller. Cc: <stable@vger.kernel.org> # v5.4+ Fixes: 966580ad ("mmc: mediatek: add support for MT7622 SoC") Signed-off-by:Wenbin Mei <wenbin.mei@mediatek.com> Reviewed-by:
Philipp Zabel <p.zabel@pengutronix.de> Tested-by:
Frank Wunderlich <frank-w@public-files.de> Link: https://lore.kernel.org/r/20200814014346.6496-4-wenbin.mei@mediatek.comSigned-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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