[PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue
From: khilman@baylibre.com (Kevin Hilman)
Date: 2016-02-23 00:32:58
Also in:
linux-devicetree, linux-mediatek, lkml
Possibly related (same subject, not in this thread)
- 2016-02-23 · Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue · Kevin Hilman <khilman@baylibre.com>
- 2016-02-19 · Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue · Matthias Brugger <matthias.bgg@gmail.com>
- 2016-02-19 · [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue · Eddie Huang <eddie.huang@mediatek.com>
Eddie Huang [off-list ref] writes:
MT8173 E1 chip has one bug that if turn off USB power domain, vcore power will also be off, thus cause modules using vcore power domain fail, like MMC. The E1 chip only found on MT8173-evb board and this board only has E1 chip, so implement this as a board specific workaround. Pwrapper use vcore power, so add pwrapper using USB power domain to keep USB power domain not to zero and disabled. Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
Tested-by: Kevin Hilman <khilman@baylibre.com> I verified that this gets my mt8173-evb booting again when I enable MMC support. Thanks, Kevin