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Date: Fri, 2 Jul 2021 03:24:40 +0000 From: Peng Fan <peng.fan@....com> To: Frieder Schrempf <frieder.schrempf@...tron.de>, Marek Vasut <marex@...x.de>, 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>, dl-linux-imx <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>, Abel Vesa <abel.vesa@....com>, Jagan Teki <jagan@...rulasolutions.com> Subject: RE: [PATCH V8 0/4] soc: imx: add i.MX BLK-CTL support All, > Subject: Re: [PATCH V8 0/4] soc: imx: add i.MX BLK-CTL support > > On 30.06.21 19:20, Frieder Schrempf wrote: > > On 30.06.21 18:28, Marek Vasut wrote: > >> On 6/30/21 4:46 PM, Frieder Schrempf wrote: > >>> On 30.06.21 14:09, Adam Ford wrote: > >>>> On Wed, Jun 30, 2021 at 4:34 AM Peng Fan (OSS) > <peng.fan@....nxp.com> wrote: > >>>>> > >>>>>> Subject: Re: [PATCH V8 0/4] soc: imx: add i.MX BLK-CTL support > >>>>>> > >>>>>> On Tue, Jun 29, 2021 at 1:56 AM Peng Fan (OSS) > >>>>>> <peng.fan@....nxp.com> > >>>>>> wrote: > >>>>>>> > >>>>>>> From: Peng Fan <peng.fan@....com> > >>>>>>> > >>>>>>> V8: > >>>>>>> Revert one change in v7, force goto disable_clk for handshake > >>>>>>> when power on in patch 3 One minor update to use if{} else {}, > >>>>>>> not if{}; if{}; in patch 3 Typo Hankshake->Handshake > >>>>>>> > >>>>>> I am using ATF, branch lf_v2.4, from the NXP code aurora repo > >>>>>> with U-Boot > >>>>>> v2021.07-rc5 > >>>>>> > >>>>>> I applied this patch against linux-next, I applied the pgc > >>>>>> patches [1], and the suggested power-domains to the otg1 and otg2 > nodes. > >>>>>> I am able to boot the device and use USB, but with this applied, > >>>>>> I cannot wake from sleep. If I revert this, the system wakes from > sleep again. > >>>>> > >>>>> I just tried linux-next without this patch on iMX8MM EVK, > >>>>> suspend/resume not work. Per my last test, it works before. Not sure > what changed in kernel. > >>>>> > >>>>> Which kernel are you using, any commit or git repo? I could try on > >>>>> imx8mm evk and debug the issue you see. > >>>> > >>>> I used kernel-next, > >>>> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > >>>> commit 889bab4c367a0ef58208fd80fafa74bb6e2dca26 (tag: > >>>> next-20210621) > >>>> > >>>> I then applied the GPCv2 patch that Marek sent. You were CC'd on > >>>> the e-mail from Marek, but I can forward the patch to you if you > >>>> can't find it. > >>>> I tested his patch and I was able to suspend-to-RAM and resume. > >>>> Once I was comfortable that it worked, I then applied your patch > >>>> series for the blk-ctl. > >>>> With the blk-ctl series applied, the suspend-resume stopped working. > >>> > >>> Same here. I tested with linux-next-20210629 and as soon as I add the > BLK-CTL driver and devicetree nodes, the resume after suspend causes a > lockup each time. > >> > >> btw do you have etnaviv enabled ? > > > > yes, but I can try without and see if it's related. > > It looks like the issue is not GPU-related. It appears once I add the > pgc_dispmix, pgc_mipi and dispmix_blk_ctl nodes to the dt (even without any > users, so lcdif and dsim are disabled). Once I remove the three nodes the > issue is gone. I have an updated code here: https://github.com/MrVan/linux/tree/linux-next-master-628-blk-ctl-test Only have blk-ctl,gpc,pd update. Please help test with applying your local patches with some peripherals enabled. I tested the upper code with suspend/resume with uart wakeup, it not hang anymore. Thanks, Peng.
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