Message-ID: <20250620084512.31147-4-Wojciech.Dubowik@mt.com>
Date: Fri, 20 Jun 2025 10:41:44 +0200
From: Wojciech Dubowik <Wojciech.Dubowik@...com>
To: linux-kernel@...r.kernel.org
Cc: Wojciech Dubowik <Wojciech.Dubowik@...com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Wojciech Dubowik <wojciech.dubowik@...com>,
	Alexander Stein <alexander.stein@...tq-group.com>,
	Marek Vasut <marex@...x.de>,
	Frieder Schrempf <frieder.schrempf@...tron.de>,
	Markus Niebel <Markus.Niebel@...group.com>,
	Frank Li <Frank.Li@....com>,
	João Paulo Gonçalves <joao.goncalves@...adex.com>,
	Michael Walle <mwalle@...nel.org>,
	Heiko Schocher <hs@...x.de>,
	Francesco Dolcini <francesco.dolcini@...adex.com>,
	Max Merchel <Max.Merchel@...tq-group.com>,
	Tim Harvey <tharvey@...eworks.com>,
	Primoz Fiser <primoz.fiser@...ik.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Kever Yang <kever.yang@...k-chips.com>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	Tobias Graemer <Tobias.Graemer@...com>
Subject: [PATCH v2 3/4] arm64: dts: freescale: Add Mettler-Toledo Snowflake V2 support

Add initial support for Mettler-Toledo Snowflake V2 terminal.
The board is using Kontron SL i.MX 8M Mini SoM with 1GB RAM.

Supported board features:
* 7" Display with touchscreen
* RS-232
* I2S Audio
* SD-card/eMMC
* USB

Signed-off-by: Tobias Graemer <Tobias.Graemer@...com>
Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@...com>
---
 arch/arm64/boot/dts/freescale/Makefile        |   1 +
 .../dts/freescale/imx8mm-mt-snowflake-v2.dts  | 484 ++++++++++++++++++
 2 files changed, 485 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-mt-snowflake-v2.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 0b473a23d120..86f2f1580696 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -128,6 +128,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-iot-gateway.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-innocomm-wb15-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-kontron-bl.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-kontron-bl-osm-s.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-mt-snowflake-v2.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-mx8menlo.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-nitrogen-r2.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-phg.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-mt-snowflake-v2.dts b/arch/arm64/boot/dts/freescale/imx8mm-mt-snowflake-v2.dts
new file mode 100644
index 000000000000..b8f24ef1fa9d
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-mt-snowflake-v2.dts
@@ -0,0 +1,484 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Mettler-Toledo GmbH
+ */
+
+/dts-v1/;
+
+#include "imx8mm-kontron-sl.dtsi"
+
+/ {
+	model = "Mettler Toledo i.MX8MM Snowflake V2";
+	compatible = "mt,imx8mm-snowflake-v2", "kontron,imx8mm-sl",
+		     "fsl,imx8mm";
+
+	chosen {
+		stdout-path = &uart3;
+	};
+
+	aliases {
+		ethernet1 = &usbnet;
+	};
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm1 0 500000 0>;
+		power-supply = <&reg_5v>;
+		brightness-levels = <0 100>;
+		num-interpolated-steps = <100>;
+		default-brightness-level = <100>;
+		status = "okay";
+	};
+
+	panel {
+		compatible = "edt,etml0700y5dha";
+		backlight = <&backlight>;
+		power-supply = <&reg_vdd_3v3>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&bridge_out>;
+			};
+		};
+	};
+
+	max98357a: audio-codec {
+		compatible = "maxim,max98357a";
+		sdmode-gpios = <&gpio4 19 GPIO_ACTIVE_HIGH>;
+		#sound-dai-cells = <0>;
+		status = "okay";
+	};
+
+	reg_5v: regulator-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	reg_sn65dsi83_1v8: regulator-sn65dsi83-1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "SN65DSI83_1V8";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
+	sound-max98357a {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "max98357a-audio";
+
+		simple-audio-card,format = "i2s";
+		simple-audio-card,frame-master = <&cpudai>;
+		simple-audio-card,bitclock-master = <&cpudai>;
+		simple-audio-card,widgets =
+			"Speaker", "Speakers";
+		simple-audio-card,routing =
+			"Speakers", "Speaker";
+		status = "okay";
+
+		cpudai: simple-audio-card,cpu {
+			sound-dai = <&sai1>;
+			dai-tdm-slot-num = <2>;
+			dai-tdm-slot-width = <32>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&max98357a>;
+			clocks = <&clk IMX8MM_CLK_SAI1_ROOT>;
+		};
+	};
+};
+
+&sai1 {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai1>;
+	assigned-clocks = <&clk IMX8MM_CLK_SAI1>;
+	assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
+	assigned-clock-rates = <24576000>;
+	fsl,sai-mclk-direction-output;
+	status = "okay";
+};
+
+&i2c1 {
+	bootph-all;
+	status = "okay";
+};
+
+&i2c2 {
+	bootph-all;
+	status = "okay";
+};
+
+&i2c4 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c4>;
+	status = "okay";
+
+	eeprom: eeprom@54 {
+		compatible = "atmel,24c08";
+		reg = <0x54>;
+		pagesize = <16>;
+	};
+
+	ili2511: ili2511@41 {
+		compatible = "ilitek,ili251x";
+		reg = <0x41>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_touch>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
+		reset-gpios = <&gpio3 16 GPIO_ACTIVE_LOW>;
+	};
+
+	lvds: lvds@2c {
+		compatible = "ti,sn65dsi83";
+		reg = <0x2c>;
+		vcc-supply = <&reg_sn65dsi83_1v8>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_sn65dsi83>;
+		status = "okay";
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				bridge_in: endpoint {
+					remote-endpoint = <&mipi_dsi_out>;
+					data-lanes = <1 2>;
+				};
+			};
+
+			port@2 {
+				reg = <2>;
+				bridge_out: endpoint {
+					remote-endpoint = <&panel_in>;
+					data-lanes = <4 3 2 1>;
+				};
+			};
+		};
+	};
+
+	usbc-cc-controller@61 {
+		compatible = "ti,tusb320";
+		reg = <0x61>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_usbc_controller>;
+		interrupts-extended = <&gpio1 6 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
+
+&mipi_dsi {
+	status = "okay";
+	vddio-supply = <&reg_sn65dsi83_1v8>;
+	assigned-clocks = <&clk IMX8MM_CLK_DSI_CORE>,
+			  <&clk IMX8MM_VIDEO_PLL1_OUT>,
+			  <&clk IMX8MM_CLK_DSI_PHY_REF>;
+	assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_266M>,
+			  <&clk IMX8MM_VIDEO_PLL1_BYPASS>,
+			  <&clk IMX8MM_CLK_24M>;
+	assigned-clock-rates = <266000000>, <594000000>, <12000000>;
+	samsung,pll-clock-frequency = <12000000>;
+	samsung,burst-clock-frequency = <891000000>;
+	samsung,esc-clock-frequency = <54000000>;
+};
+
+&mipi_dsi_out {
+	remote-endpoint = <&bridge_in>;
+};
+
+&lcdif {
+	status = "okay";
+};
+
+&gpu_2d {
+	status = "okay";
+};
+
+&gpu_3d {
+	status = "okay";
+};
+
+&ecspi1 {
+	status = "disabled";
+};
+
+&gpio1 {
+	bootph-pre-ram;
+};
+
+&gpio2 {
+	bootph-pre-ram;
+};
+
+&gpio3 {
+	bootph-pre-ram;
+};
+
+&gpio4 {
+	bootph-pre-ram;
+};
+
+&gpio5 {
+	bootph-pre-ram;
+	status_led_controller_oe: status-led-controller-hog {
+		gpio-hog;
+		gpios = <4 GPIO_ACTIVE_HIGH>;
+		output-low;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_hog_status_led_controller>;
+	};
+};
+
+&pca9450 {
+	bootph-pre-ram;
+};
+
+&{/soc@...us@...00000/i2c@...20000/pmic@...regulators} {
+	bootph-pre-ram;
+};
+
+&iomuxc {
+	pinctrl-0 = <&pinctrl_hog>;
+	pinctrl-names = "default";
+
+	pinctrl_hog: hoggrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3		0x19 /* \SOM_RTC_INT */
+			MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9		0x184 /* SOM_DIS_ID0 */
+			MX8MM_IOMUXC_GPIO1_IO10_GPIO1_IO10		0x184 /* SOM_DIS_ID1 */
+			MX8MM_IOMUXC_GPIO1_IO11_GPIO1_IO11		0x184 /* SOM_DIS_ID2 */
+			MX8MM_IOMUXC_SAI2_TXC_GPIO4_IO25		0x19 /* SOM_PCB_ID0 */
+			MX8MM_IOMUXC_SAI2_TXD0_GPIO4_IO26		0x19 /* SOM_PCB_ID1 */
+			MX8MM_IOMUXC_SAI2_MCLK_GPIO4_IO27		0x19 /* SOM_PCBA_ID0 */
+			MX8MM_IOMUXC_SAI3_RXFS_GPIO4_IO28		0x19 /* SOM_PCBA_ID1 */
+			MX8MM_IOMUXC_SAI5_RXFS_GPIO3_IO19		0x19 /* \SOM_STATLED_RES */
+			MX8MM_IOMUXC_SAI5_RXC_GPIO3_IO20		0x19 /* \SOM_HUB_RES */
+			MX8MM_IOMUXC_SAI5_RXD0_GPIO3_IO21		0x19 /* \SOM_SUPPLY_EN */
+			MX8MM_IOMUXC_SAI5_RXD1_GPIO3_IO22		0x1c4 /* \SOM_COM_RES */
+			MX8MM_IOMUXC_SAI5_RXD2_GPIO3_IO23		0x184 /* SOM_DBG_GPIO0 */
+			MX8MM_IOMUXC_SAI5_RXD3_GPIO3_IO24		0x184 /* SOM_DBG_GPIO1 */
+			MX8MM_IOMUXC_SAI5_MCLK_GPIO3_IO25		0x184 /* SOM_DBG_GPIO2 */
+			MX8MM_IOMUXC_SAI3_TXD_GPIO5_IO1			0x184 /* SOM_DBG_GPIO3 */
+			MX8MM_IOMUXC_SAI1_TXD7_GPIO4_IO19		0x184 /* SOM_AUDIO_SD */
+		>;
+	};
+
+	pinctrl_i2c4: i2c4grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C4_SCL_I2C4_SCL			0x400001c3
+			MX8MM_IOMUXC_I2C4_SDA_I2C4_SDA			0x400001c3
+		>;
+	};
+
+	pinctrl_pwm1: pwm1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SPDIF_EXT_CLK_PWM1_OUT		0x6
+		>;
+	};
+
+	pinctrl_pwm2: pwm2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SPDIF_RX_PWM2_OUT			0x6
+		>;
+	};
+
+	pinctrl_pwm3: pwm3grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SPDIF_TX_PWM3_OUT			0x6
+		>;
+	};
+
+	pinctrl_sai1: sai1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_TXFS_SAI1_TX_SYNC		0xd6
+			MX8MM_IOMUXC_SAI1_TXC_SAI1_TX_BCLK		0xd6
+			MX8MM_IOMUXC_SAI1_TXD0_SAI1_TX_DATA0		0xd6
+		>;
+	};
+
+	pinctrl_sn65dsi83: sn65dsi83grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO05_GPIO1_IO5		0x19 /* \SOM_DSI_INT */
+		>;
+	};
+
+	pinctrl_hog_status_led_controller: statusledcontrollergrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SPDIF_RX_GPIO5_IO4			0x19
+		>;
+	};
+
+	pinctrl_touch: touchgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO01_GPIO1_IO1		0x19 /* \SOM_TOUCH_RES */
+			MX8MM_IOMUXC_NAND_READY_B_GPIO3_IO16		0x19 /* \SOM_TOUCH_INT */
+		>;
+	};
+
+	pinctrl_uart1: uart1grp {
+		bootph-pre-ram;
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI2_RXC_UART1_DCE_RX		0x140
+			MX8MM_IOMUXC_SAI2_RXFS_UART1_DCE_TX		0x140
+			MX8MM_IOMUXC_SAI2_RXD0_UART1_DCE_RTS_B		0x140
+			MX8MM_IOMUXC_SAI2_TXFS_UART1_DCE_CTS_B		0x140
+		>;
+	};
+
+	pinctrl_usbc_controller: usbccontrollergrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO06_GPIO1_IO6		0x19 /* \SOM_USBC_INT */
+		>;
+	};
+
+	pinctrl_usdhc2: usdhc2grp {
+		bootph-pre-ram;
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK			0x190
+			MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD			0x1d0
+			MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0		0x1d0
+			MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1		0x1d0
+			MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2		0x1d0
+			MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3		0x1d0
+			MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12		0x41
+		>;
+	};
+
+	pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+		bootph-pre-ram;
+		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		0x41
+		>;
+	};
+
+	pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+		bootph-pre-ram;
+		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		0x41
+		>;
+	};
+};
+
+&pinctrl_ecspi1 {
+	bootph-pre-ram;
+};
+
+&pinctrl_i2c1 {
+	bootph-pre-ram;
+};
+
+&pinctrl_pmic {
+	bootph-pre-ram;
+};
+
+&pinctrl_uart3 {
+	bootph-all;
+};
+
+&pinctrl_usdhc1 {
+	bootph-pre-ram;
+};
+
+&pinctrl_usdhc1_100mhz {
+	bootph-pre-ram;
+};
+
+&pinctrl_usdhc1_200mhz {
+	bootph-pre-ram;
+};
+
+&pinctrl_wdog {
+	bootph-pre-ram;
+};
+
+&pwm1 {
+	pinctrl-0 = <&pinctrl_pwm1>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&pwm2 {
+	pinctrl-0 = <&pinctrl_pwm2>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&reg_nvcc_sd {
+	regulator-always-on;
+	regulator-boot-on;
+	regulator-min-microvolt = <3300000>;
+};
+
+&uart1 {
+	bootph-all;
+	pinctrl-0 = <&pinctrl_uart1>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+	status = "okay";
+};
+
+&uart3 {
+	bootph-all;
+};
+
+&usbotg1 {
+	bootph-pre-ram;
+	dr_mode = "peripheral";
+	status = "okay";
+};
+
+&usbotg2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	disable-over-current;
+	dr_mode = "host";
+	status = "okay";
+
+	usb1@1 {
+		reg = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		usbnet: ethernet@1 {
+			compatible = "usb424,9500";
+			reg = <1>;
+			mac-address = [ 00 00 00 00 00 00 ];
+		};
+	};
+};
+
+&usdhc1 {
+	bootph-pre-ram;
+};
+
+&usdhc2 {
+	bootph-pre-ram;
+	bus-width = <4>;
+	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
+	no-1-8-v;
+	pinctrl-0 = <&pinctrl_usdhc2>;
+	pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
+	pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	vmmc-supply = <&reg_vdd_3v3>;
+	status = "okay";
+};
+
+&wdog1 {
+	bootph-pre-ram;
+};
-- 
2.47.2

Powered by blists - more mailing lists