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Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue

From Kevin Hilman <khilman@baylibre.com>
Newsgroups linux.kernel
Subject Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue
Date 2016-02-23 01:40 +0100
Message-ID <r59bd-5O3-25@gated-at.bofh.it> (permalink)
References <r3Mqm-MH-3@gated-at.bofh.it>
Organization BayLibre

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Eddie Huang <eddie.huang@mediatek.com> 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

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Thread

[PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue Eddie Huang <eddie.huang@mediatek.com> - 2016-02-19 07:10 +0100
  Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail  issue Matthias Brugger <matthias.bgg@gmail.com> - 2016-02-19 11:10 +0100
  Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue Kevin Hilman <khilman@baylibre.com> - 2016-02-23 01:40 +0100
    Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail  issue Matthias Brugger <matthias.bgg@gmail.com> - 2016-02-23 10:00 +0100
      Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue Kevin Hilman <khilman@baylibre.com> - 2016-02-23 19:40 +0100

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