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([188.24.13.252]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48a7bc1cbfesm68516515e9.4.2026.04.29.06.57.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2026 06:57:23 -0700 (PDT) From: Alexandru Ardelean To: imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Cc: festevam@gmail.com, kernel@pengutronix.de, s.hauer@pengutronix.de, Frank.Li@nxp.com, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, Alexandru Ardelean , Xiaofeng Wei Subject: [PATCH] arm64: dts: imx8mp-frdm: add support for SD-card Date: Wed, 29 Apr 2026 16:57:17 +0300 Message-ID: <20260429135717.178982-1-aardelean@deviqon.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The i.MX8MP FRDM board also has an SD-card slot, which is useful during. development. This change picks it up from NXP's BSP repo: https://github.com/nxp-imx-support/meta-imx-frdm Adding Xiaofeng Wei's as he is the original author of the DT. Signed-off-by: Xiaofeng Wei Signed-off-by: Alexandru Ardelean --- arch/arm64/boot/dts/freescale/imx8mp-frdm.dts | 72 +++++++++++++++++++ 1 file changed, 72 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-frdm.dts b/arch/arm64/boot/dts/freescale/imx8mp-frdm.dts index 55690f5e53d7e..84034b0ccb12d 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-frdm.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-frdm.dts @@ -42,6 +42,17 @@ memory@40000000 { reg = <0x0 0x40000000 0 0xc0000000>, <0x1 0x00000000 0 0x40000000>; }; + + reg_usdhc2_vmmc: regulator-usdhc2 { + compatible = "regulator-fixed"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_reg_usdhc2_vmmc>; + regulator-name = "VSD_3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; }; &A53_0 { @@ -237,6 +248,19 @@ &uart3 { status = "okay"; }; +&usdhc2 { + assigned-clocks = <&clk IMX8MP_CLK_USDHC2>; + assigned-clock-rates = <400000000>; + pinctrl-names = "default", "state_100mhz", "state_200mhz"; + pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>; + pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>; + pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>; + cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>; + vmmc-supply = <®_usdhc2_vmmc>; + bus-width = <4>; + status = "okay"; +}; + &usdhc3 { assigned-clocks = <&clk IMX8MP_CLK_USDHC3>; assigned-clock-rates = <400000000>; @@ -289,6 +313,12 @@ MX8MP_IOMUXC_SD1_STROBE__GPIO2_IO11 0x146 >; }; + pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp { + fsl,pins = < + MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19 0x40 + >; + }; + pinctrl_uart2: uart2grp { fsl,pins = < MX8MP_IOMUXC_UART2_RXD__UART2_DCE_RX 0x140 @@ -305,6 +335,48 @@ MX8MP_IOMUXC_ECSPI1_MISO__UART3_DCE_CTS 0x140 >; }; + pinctrl_usdhc2: usdhc2grp { + fsl,pins = < + MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK 0x190 + MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD 0x1d0 + MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d0 + MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d0 + MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d0 + MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d0 + MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0 + >; + }; + + pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp { + fsl,pins = < + MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK 0x194 + MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD 0x1d4 + MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d4 + MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d4 + MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d4 + MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4 + MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0 + >; + }; + + pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp { + fsl,pins = < + MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK 0x196 + MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD 0x1d6 + MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d6 + MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d6 + MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d6 + MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d6 + MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0 + >; + }; + + pinctrl_usdhc2_gpio: usdhc2gpiogrp { + fsl,pins = < + MX8MP_IOMUXC_SD2_CD_B__GPIO2_IO12 0x1c4 + >; + }; + pinctrl_usdhc3: usdhc3grp { fsl,pins = < MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK 0x190 -- 2.43.0