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Wed, 19 May 2021 16:09:29 +0000 Subject: Re: [PATCH V2 00/13] soc: imx: gpcv2: support i.MX8MM From: Frieder Schrempf To: "Peng Fan (OSS)" , robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, p.zabel@pengutronix.de, l.stach@pengutronix.de, krzk@kernel.org, agx@sigxcpu.org, marex@denx.de, andrew.smirnov@gmail.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, ping.bai@nxp.com, aford173@gmail.com, abel.vesa@nxp.com, Peng Fan References: <20210506010440.7016-1-peng.fan@oss.nxp.com> <3c5ef283-0895-05ab-7568-0d108b761008@kontron.de> Message-ID: Date: Wed, 19 May 2021 18:09:26 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 In-Reply-To: <3c5ef283-0895-05ab-7568-0d108b761008@kontron.de> Content-Language: en-US X-Originating-IP: [89.244.189.149] X-ClientProxiedBy: AM5PR0301CA0016.eurprd03.prod.outlook.com (2603:10a6:206:14::29) To AM0PR10MB2963.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:208:157::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.10.27] (89.244.189.149) by AM5PR0301CA0016.eurprd03.prod.outlook.com (2603:10a6:206:14::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4129.33 via Frontend Transport; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 06.05.21 10:32, Frieder Schrempf wrote: > On 06.05.21 03:04, Peng Fan (OSS) wrote: >> From: Peng Fan >> >> >> V2: >> - Add R-b/A-b tag >> - Merge V1 patch 13 to V2 patch 6 >> - Drop V1 patch 15 >> - Merge V1 patch 16 to V2 patch 5 and add comments in patch 5 to explain >> details >> - Add explaination in patch 8 for "why the resets are not defined" >> >> This patchset is a pick up Lucas's gpcv2 work for i.MX8MM and several >> minor changes from me to make it could work with i.MX BLK-CTL driver. >> >> Thanks for Lucas's work and suggestion, Frieder Schrempf for collecting >> all the patches, Jacky Bai on help debug issues. > > I tested this series together with the BLK CTL patches by using the GPU and the display stack. Everything looks good to me. > > Tested-by: Frieder Schrempf So after some more testing on different hardware I stumbled upon the problem that USB autosuspend doesn't work properly anymore. I have an onboard LTE module that is connected to OTG2 on the i.MX8MM. When using the mainline TF-A (that enables USB power-domains by default) and removing the power-domain control from the kernel, the device comes up after a few seconds and is enumerated on the bus. Now, when I let the kernel control the power-domains, the device comes up at boot, but isn't enumerated on the USB bus. As soon as I disable autosuspend for the port, it comes up. Is this something that needs to be fixed on the USB driver side or is something to be considered for the GPCv2 driver? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel