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Message-ID: <2c39672b-780a-8e33-038e-0856e32ede7a@denx.de>
Date: Mon, 28 Jun 2021 12:59:31 +0200
From: Marek Vasut <marex@...x.de>
To: Adam Ford <aford173@...il.com>,
"Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc: Rob Herring <robh+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Sascha Hauer <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Lucas Stach <l.stach@...gutronix.de>,
Krzysztof Kozlowski <krzk@...nel.org>,
Guido Günther <agx@...xcpu.org>,
Andrey Smirnov <andrew.smirnov@...il.com>,
devicetree <devicetree@...r.kernel.org>,
arm-soc <linux-arm-kernel@...ts.infradead.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Jacky Bai <ping.bai@....com>,
Schrempf Frieder <frieder.schrempf@...tron.de>,
Abel Vesa <abel.vesa@....com>, Peng Fan <peng.fan@....com>
Subject: Re: [PATCH V7 4/4] soc: imx: Add blk-ctl driver for i.MX8MM
On 6/14/21 8:07 PM, Adam Ford wrote:
> On Sat, Jun 12, 2021 at 7:58 AM Peng Fan (OSS) <peng.fan@....nxp.com> wrote:
>>
>> From: Peng Fan <peng.fan@....com>
>>
>> The i.MX8MM SoC has dispmix BLK-CTL and vpumix BLK-CTL, so we add
>> that support in this driver.
>>
>> Reviewed-by: Abel Vesa <abel.vesa@....com>
>> Signed-off-by: Peng Fan <peng.fan@....com>
>
> Maybe my TF-A is too old, but I am not able to wake the device from
> suspend-to-ram with this series. I used the device tree from [1] to
> enable both the GPCv2 and the blk-ctl stuff.
>
> [1] - https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210604111005.6804-1-peng.fan@oss.nxp.com/
>
> I based both off Shawn's for-next branch.
I also ran into issues with this, although it could also be related to
GPCv2. On MX8MM , the system sometimes hangs when bringing up the GPCv2
power domain 6 (VPUMIX). It seems that the GPCv2 driver sets
GPC_PU_PGC_SW_PUP_REQ register to 0x100 to bring up the VPUMIX and the
bit never self-clears. After that, it seems the entire GPC locks up.
Have you ever seen that kind of behavior ?
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