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Thu, 1 Oct 2020 13:15:15 +0000 Subject: Re: [PATCH 2/2] arm64: dts: imx8mm-kontron: Add support for ultra high speed modes on SD card To: Robin Gong , Fabio Estevam , Liam Girdwood , Mark Brown , NXP Linux Team , Pengutronix Kernel Team , Sascha Hauer , Shawn Guo Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20201001123447.1610-1-frieder.schrempf@kontron.de> <20201001123447.1610-2-frieder.schrempf@kontron.de> From: Frieder Schrempf Message-ID: Date: Thu, 1 Oct 2020 15:15:14 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: <20201001123447.1610-2-frieder.schrempf@kontron.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [89.247.42.197] X-ClientProxiedBy: AM7PR02CA0022.eurprd02.prod.outlook.com (2603:10a6:20b:100::32) To AM0PR10MB2963.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:208:157::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.10.17] (89.247.42.197) by AM7PR02CA0022.eurprd02.prod.outlook.com (2603:10a6:20b:100::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3433.37 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: kontron.de X-MS-Exchange-CrossTenant-Network-Message-Id: ddb65438-e070-4838-22b6-08d8660c095d X-MS-Exchange-CrossTenant-AuthSource: AM0PR10MB2963.EURPRD10.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Oct 2020 13:15:15.7373 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8c9d3c97-3fd9-41c8-a2b1-646f3942daf1 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: sJjDAxoINRqjUOi2SPGikkE+eHOt/VxCyCrN5eBzy94qQqdUgnm/tVHhpFuilNagNl1IPOAe58cMJowrhIvwV0mflHmT+2DgvpVp1AQtq/g= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM8PR10MB3988 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01.10.20 14:34, Schrempf Frieder wrote: > From: Frieder Schrempf > > In order to use ultra high speed modes (UHS) on the SD card slot, we > add matching pinctrls and fix the voltage switching for LDO5 of the > PMIC, by providing the SD_VSEL pin as GPIO to the PMIC driver. > > Signed-off-by: Frieder Schrempf > --- > .../dts/freescale/imx8mm-kontron-n801x-s.dts | 27 +++++++++++++++++++ > .../freescale/imx8mm-kontron-n801x-som.dtsi | 2 ++ > 2 files changed, 29 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts > index 389e735b2880..6913aefa56aa 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts > +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts > @@ -190,8 +190,11 @@ > }; > > &usdhc2 { > + pinctrl-names = "default", "state_100mhz", "state_200mhz"; > pinctrl-names = "default"; And before anyone complains: The above line needs to be dropped of course. > pinctrl-0 = <&pinctrl_usdhc2>; > + pinctrl-1 = <&pinctrl_usdhc2_100mhz>; > + pinctrl-2 = <&pinctrl_usdhc2_200mhz>; > vmmc-supply = <®_vdd_3v3>; > vqmmc-supply = <®_nvcc_sd>; > cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>; > @@ -320,4 +323,28 @@ > MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12 0x019 > >; > }; > + > + pinctrl_usdhc2_100mhz: usdhc2grp100mhz { > + fsl,pins = < > + MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK 0x194 > + MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d4 > + MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d4 > + MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d4 > + MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d4 > + MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4 > + MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12 0x019 > + >; > + }; > + > + pinctrl_usdhc2_200mhz: usdhc2grp200mhz { > + fsl,pins = < > + MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK 0x196 > + MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d6 > + MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d6 > + MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d6 > + MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d6 > + MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d6 > + MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12 0x019 > + >; > + }; > }; > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > index 5c6a660f4395..282a56fb3949 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > @@ -85,6 +85,7 @@ > pinctrl-0 = <&pinctrl_pmic>; > interrupt-parent = <&gpio1>; > interrupts = <0 GPIO_ACTIVE_LOW>; > + sd-vsel-gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>; > > regulators { > reg_vdd_soc: BUCK1 { > @@ -224,6 +225,7 @@ > pinctrl_pmic: pmicgrp { > fsl,pins = < > MX8MM_IOMUXC_GPIO1_IO00_GPIO1_IO0 0x41 > + MX8MM_IOMUXC_GPIO1_IO04_GPIO1_IO4 0x41 > >; > }; > >