* [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue
@ 2016-02-19 6:00 Eddie Huang
2016-02-19 10:05 ` Matthias Brugger
2016-02-23 0:32 ` Kevin Hilman
0 siblings, 2 replies; 5+ messages in thread
From: Eddie Huang @ 2016-02-19 6:00 UTC (permalink / raw)
To: Matthias Brugger, Kevin Hilman
Cc: Henry Chen, Chaotian Jing, devicetree, linux-arm-kernel,
linux-kernel, linux-mediatek, srv_heupstream, Eddie Huang
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>
---
Sascha sent similar patch before[0], but MMC support runtime-pm,
vcore power domain still be disabled after MMC and USB suspend.
This silicon bug already fix in MT8173 MP chip.
[0]:http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/358065.html
---
arch/arm64/boot/dts/mediatek/mt8173-evb.dts | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
index e427f04..7453a47 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
@@ -214,6 +214,9 @@
};
&pwrap {
+ /* Only MT8173 E1 needs USB power domain */
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
+
pmic: mt6397 {
compatible = "mediatek,mt6397";
interrupt-parent = <&pio>;
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue
2016-02-19 6:00 [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue Eddie Huang
@ 2016-02-19 10:05 ` Matthias Brugger
2016-02-23 0:32 ` Kevin Hilman
1 sibling, 0 replies; 5+ messages in thread
From: Matthias Brugger @ 2016-02-19 10:05 UTC (permalink / raw)
To: Eddie Huang, Kevin Hilman
Cc: Henry Chen, Chaotian Jing, devicetree, linux-arm-kernel,
linux-kernel, linux-mediatek, srv_heupstream
Hi Eddie,
On 19/02/16 07:00, Eddie Huang wrote:
> 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>
>
> ---
> Sascha sent similar patch before[0], but MMC support runtime-pm,
> vcore power domain still be disabled after MMC and USB suspend.
> This silicon bug already fix in MT8173 MP chip.
>
> [0]:http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/358065.html
> ---
> arch/arm64/boot/dts/mediatek/mt8173-evb.dts | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
> index e427f04..7453a47 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
> @@ -214,6 +214,9 @@
> };
>
> &pwrap {
> + /* Only MT8173 E1 needs USB power domain */
> + power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
> +
Applied, thanks
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue
2016-02-19 6:00 [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue Eddie Huang
2016-02-19 10:05 ` Matthias Brugger
@ 2016-02-23 0:32 ` Kevin Hilman
2016-02-23 8:53 ` Matthias Brugger
1 sibling, 1 reply; 5+ messages in thread
From: Kevin Hilman @ 2016-02-23 0:32 UTC (permalink / raw)
To: Eddie Huang
Cc: Matthias Brugger, Henry Chen, Chaotian Jing, devicetree,
linux-arm-kernel, linux-kernel, linux-mediatek, srv_heupstream
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
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue
2016-02-23 0:32 ` Kevin Hilman
@ 2016-02-23 8:53 ` Matthias Brugger
2016-02-23 18:32 ` Kevin Hilman
0 siblings, 1 reply; 5+ messages in thread
From: Matthias Brugger @ 2016-02-23 8:53 UTC (permalink / raw)
To: Kevin Hilman, Eddie Huang
Cc: Henry Chen, Chaotian Jing, devicetree, linux-arm-kernel,
linux-kernel, linux-mediatek, srv_heupstream
On 23/02/16 01:32, Kevin Hilman wrote:
> 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 send the patch in a pull request yesterday, so I won't be able to add
your tag.
Thanks for testing and reporting this issue!
Matthias
> I verified that this gets my mt8173-evb booting again when I enable MMC
> support.
>
> Thanks,
>
> Kevin
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue
2016-02-23 8:53 ` Matthias Brugger
@ 2016-02-23 18:32 ` Kevin Hilman
0 siblings, 0 replies; 5+ messages in thread
From: Kevin Hilman @ 2016-02-23 18:32 UTC (permalink / raw)
To: Matthias Brugger
Cc: Eddie Huang, Henry Chen, Chaotian Jing, devicetree,
linux-arm-kernel, linux-kernel, linux-mediatek, srv_heupstream
Matthias Brugger <matthias.bgg@gmail.com> writes:
> On 23/02/16 01:32, Kevin Hilman wrote:
>> 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 send the patch in a pull request yesterday, so I won't be able to
> add your tag.
No worries. Was on vacation, so couldn't test sooner.
> Thanks for testing and reporting this issue!
You're welcome,
Kevin
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2016-02-23 18:32 UTC | newest]
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2016-02-19 6:00 [PATCH] ARM64: dts: Mediatek: mt8173-evb: fix access MMC fail issue Eddie Huang
2016-02-19 10:05 ` Matthias Brugger
2016-02-23 0:32 ` Kevin Hilman
2016-02-23 8:53 ` Matthias Brugger
2016-02-23 18:32 ` Kevin Hilman
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