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Tue, 4 May 2021 09:05:43 +0000 Subject: Re: [PATCH 1/2] arm64: dts: imx8mm: specify dma-ranges To: Lucas Stach , Shawn Guo Cc: NXP Linux Team , linux-arm-kernel@lists.infradead.org, Fabio Estevam , kernel@pengutronix.de, patchwork-lst@pengutronix.de References: <20210504082052.2084706-1-l.stach@pengutronix.de> From: Frieder Schrempf Message-ID: Date: Tue, 4 May 2021 11:05:41 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 In-Reply-To: <20210504082052.2084706-1-l.stach@pengutronix.de> Content-Language: en-US X-Originating-IP: [89.244.177.213] X-ClientProxiedBy: AM7PR03CA0003.eurprd03.prod.outlook.com (2603:10a6:20b:130::13) 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] (89.244.177.213) by AM7PR03CA0003.eurprd03.prod.outlook.com (2603:10a6:20b:130::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4108.24 via Frontend Transport; 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charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 04.05.21 10:20, Lucas Stach wrote: > DMA addressing capabilities on i.MX8MM are limited by the interconnect, > same as on i.MX8MQ. Add dma-ranges to the the peripheral bus to let > the kernel know about this. > > Signed-off-by: Lucas Stach Reviewed-by: Frieder Schrempf Tested-by: Frieder Schrempf With this applied the following errors don't occur anymore when using the GPU with a board that has 4GB of RAM. etnaviv-gpu 38000000.gpu: AXI bus error etnaviv-gpu 38000000.gpu: MMU fault status 0x00000000 etnaviv-gpu 38000000.gpu: recover hung GPU! > --- > arch/arm64/boot/dts/freescale/imx8mm.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > index 6bf1d15ba16a..5bdc730f6132 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > @@ -261,6 +261,7 @@ soc@0 { > #address-cells = <1>; > #size-cells = <1>; > ranges = <0x0 0x0 0x0 0x3e000000>; > + dma-ranges = <0x40000000 0x0 0x40000000 0xc0000000>; > nvmem-cells = <&imx8mm_uid>; > nvmem-cell-names = "soc_unique_id"; > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel