Re: [PATCH v4 4/6] ARM: dts: imx6qdl: Add Variscite DART-MX6 SoM support

From: Shawn Guo
Date: Wed Nov 29 2017 - 19:39:41 EST

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In reply to: Neil Armstrong: "[PATCH v4 4/6] ARM: dts: imx6qdl: Add Variscite DART-MX6 SoM support"
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On Wed, Nov 29, 2017 at 11:20:55AM +0100, Neil Armstrong wrote:
> This patch adds support for the Variscite DART-MX6 SoM with :
> - i.MX6 Quad or Dual Lite SoC
> - 1Gb/2Gb LPDDR2
> - 4-64 GB eMMC
> - Camera Interface
> - HDMI+CEC interface
> - LVDS / DSI / Parallel RGB interfaces
> - Ethernet RGMII interface
> - On-SoM Wi-Fi/Bluetooth with WiLink wl1835 SDIO Module
> - SD/MMC/SDIO interface
> - USB Host + USB OTG interface
> - I2C interfaces
> - SPI interfaces
> - PCI-Express 2.0 interface
> - on-SoM Audio Codec with HP/Line-In interfaces + DMIC interface
> - Digital Audio interface
> - S/PDIF interface
>
> Product website : http://www.variscite.com/products/system-on-module-som/cortex-a9/dart-mx6-cpu-freescale-imx6
>
> Support is handled with a SoM-centric dtsi exporting the default interfaces
> along the default pinmuxing to be enabled by the board dts file.
>
> Only board-independent devices like WiFi, eMMC or PMIC are enabled in the dtsi.
>
> Reviewed-by: Fabio Estevam <fabio.estevam@xxxxxxx>
> Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>

Looks pretty good. Only a couple of minor comments.

> ---
> arch/arm/boot/dts/imx6qdl-var-dart.dtsi | 504 ++++++++++++++++++++++++++++++++
> 1 file changed, 504 insertions(+)
> create mode 100644 arch/arm/boot/dts/imx6qdl-var-dart.dtsi
>
> diff --git a/arch/arm/boot/dts/imx6qdl-var-dart.dtsi b/arch/arm/boot/dts/imx6qdl-var-dart.dtsi
> new file mode 100644
> index 0000000..fd2520b
> --- /dev/null
> +++ b/arch/arm/boot/dts/imx6qdl-var-dart.dtsi
> @@ -0,0 +1,504 @@
> +/*
> + * Support for Variscite DART-MX6 Module
> + *
> + * Copyright 2017 BayLibre, SAS
> + * Author: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> + *
> + * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> + */
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/sound/fsl-imx-audmux.h>
> +
> +/ {
> + memory {
> + reg = <0x10000000 0x40000000>;
> + };
> +
> + reg_3p3v: regulator-3p3v {
> + compatible = "regulator-fixed";
> + regulator-name = "3P3V";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> +
> + reg_wl18xx_vmmc: regulator-wl18xx {
> + compatible = "regulator-fixed";
> + regulator-name = "vwl1807";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + gpio = <&gpio7 8 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + startup-delay-us = <70000>;
> + };
> +};
> +
> +&audmux {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_audmux>;
> + status = "okay";
> +
> + ssi2 {
> + fsl,audmux-port = <1>;
> + fsl,port-config = <
> + (IMX_AUDMUX_V2_PTCR_SYN |
> + IMX_AUDMUX_V2_PTCR_TFSDIR |
> + IMX_AUDMUX_V2_PTCR_TFSEL(2) |
> + IMX_AUDMUX_V2_PTCR_TCLKDIR |
> + IMX_AUDMUX_V2_PTCR_TCSEL(2))
> + IMX_AUDMUX_V2_PDCR_RXDSEL(2)
> + >;
> + };
> +
> + aud3 {
> + fsl,audmux-port = <2>;
> + fsl,port-config = <
> + IMX_AUDMUX_V2_PTCR_SYN
> + IMX_AUDMUX_V2_PDCR_RXDSEL(1)
> + >;
> + };
> +};
> +
> +&can1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_flexcan1>;
> + status = "disabled";
> +};
> +
> +&can2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_flexcan2>;
> + status = "disabled";
> +};
> +
> +&ecspi1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_ecspi1>;
> + status = "disabled";
> +};
> +
> +&fec {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_enet>;
> + phy-mode = "rgmii";
> + status = "disabled";
> +};
> +
> +&hdmi {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hdmicec>;
> + ddc-i2c-bus = <&i2c1>;
> + status = "disabled";
> +};
> +
> +&i2c1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c1>;
> + status = "disabled";
> +};
> +
> +&i2c2 {
> + clock-frequency = <100000>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c2>;
> + status = "okay";
> +
> + pmic@08 {

Please drop the leading zero in unit-address.

> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_pmic>;
> + compatible = "fsl,pfuze100";
> + reg = <0x08>;
> +
> + regulators {
> + sw1a_reg: sw1ab {
> + regulator-min-microvolt = <300000>;
> + regulator-max-microvolt = <1875000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <6250>;
> + };
> +
> + sw1c_reg: sw1c {
> + regulator-min-microvolt = <300000>;
> + regulator-max-microvolt = <1875000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <6250>;
> + };
> +
> + sw2_reg: sw2 {
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + sw3a_reg: sw3a {
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3950000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + sw3b_reg: sw3b {
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3950000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + sw4_reg: sw4 {
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3950000>;
> + };
> +
> + snvs_reg: vsnvs {
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <3000000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + vref_reg: vrefddr {
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + vgen6_reg: vgen6 {
> + regulator-min-microvolt = <2800000>;
> + regulator-max-microvolt = <2800000>;
> + regulator-always-on;
> + regulator-boot-on;
> + };
> + };
> + };
> +
> + codec: codec@1b {

Label should be something specific, maybe tlv320aic3106?

> + compatible = "ti,tlv320aic3106";
> + reg = <0x1b>;
> + #sound-dai-cells = <0>;
> + DRVDD-supply = <&reg_3p3v>;
> + AVDD-supply = <&reg_3p3v>;
> + IOVDD-supply = <&reg_3p3v>;
> + DVDD-supply = <&reg_3p3v>;
> + ai3x-ocmv = <0>;
> + gpio-reset = <&gpio5 5 GPIO_ACTIVE_LOW>;
> + };
> +};
> +
> +&i2c3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c3>;
> + status = "disabled";
> +};
> +
> +&iomuxc {
> + pinctrl_audmux: audmux {
> + fsl,pins = <
> + MX6QDL_PAD_CSI0_DAT7__AUD3_RXD 0x130b0
> + MX6QDL_PAD_CSI0_DAT4__AUD3_TXC 0x130b0
> + MX6QDL_PAD_CSI0_DAT5__AUD3_TXD 0x110b0
> + MX6QDL_PAD_CSI0_DAT6__AUD3_TXFS 0x130b0
> + /* Audio Clock */
> + MX6QDL_PAD_GPIO_0__CCM_CLKO1 0x130b0
> + >;
> + };
> +
> + pinctrl_bt: bt {
> + fsl,pins = <
> + /* Bluetooth enable */
> + MX6QDL_PAD_SD3_DAT6__GPIO6_IO18 0x1b0b1
> + /* Bluetooth Slow Clock */
> + MX6QDL_PAD_ENET_RXD0__OSC32K_32K_OUT 0x000b0
> + >;
> + };
> +
> + pinctrl_ecspi1: ecspi1grp {
> + fsl,pins = <
> + MX6QDL_PAD_KEY_COL1__ECSPI1_MISO 0x100b1
> + MX6QDL_PAD_KEY_ROW0__ECSPI1_MOSI 0x100b1
> + MX6QDL_PAD_KEY_COL0__ECSPI1_SCLK 0x100b1
> + /* SPI1 CS0 */
> + MX6QDL_PAD_KEY_ROW1__GPIO4_IO09 0x1b0b0
> + /* SPI1 CS1 */
> + MX6QDL_PAD_KEY_COL2__GPIO4_IO10 0x1b0b0
> + >;
> + };
> +
> + pinctrl_enet: enetgrp {
> + fsl,pins = <
> + MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x100b0
> + MX6QDL_PAD_ENET_MDC__ENET_MDC 0x100b0
> + MX6QDL_PAD_RGMII_TXC__RGMII_TXC 0x10030
> + MX6QDL_PAD_RGMII_TD0__RGMII_TD0 0x10030
> + MX6QDL_PAD_RGMII_TD1__RGMII_TD1 0x10030
> + MX6QDL_PAD_RGMII_TD2__RGMII_TD2 0x10030
> + MX6QDL_PAD_RGMII_TD3__RGMII_TD3 0x10030
> + MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL 0x10030
> + MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK 0x100b0
> + MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b030
> + MX6QDL_PAD_RGMII_RD0__RGMII_RD0 0x1b030
> + MX6QDL_PAD_RGMII_RD1__RGMII_RD1 0x1b030
> + MX6QDL_PAD_RGMII_RD2__RGMII_RD2 0x1b030
> + MX6QDL_PAD_RGMII_RD3__RGMII_RD3 0x1b030
> + MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x1b030
> + >;
> + };
> +
> + pinctrl_flexcan1: flexcan1grp {
> + fsl,pins = <
> + MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x1b0b0
> + MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x1b0b0
> + >;
> + };
> +
> + pinctrl_flexcan2: flexcan2grp {
> + fsl,pins = <
> + MX6QDL_PAD_KEY_COL4__FLEXCAN2_TX 0x1b0b0
> + MX6QDL_PAD_KEY_ROW4__FLEXCAN2_RX 0x1b0b0
> + >;
> + };
> +
> + pinctrl_hdmicec: hdmicecgrp {
> + fsl,pins = <
> + MX6QDL_PAD_KEY_ROW2__HDMI_TX_CEC_LINE 0x1f8b0
> + >;
> + };
> +
> + pinctrl_i2c1: i2c1grp {
> + fsl,pins = <
> + MX6QDL_PAD_CSI0_DAT8__I2C1_SDA 0x4001b8b1
> + MX6QDL_PAD_CSI0_DAT9__I2C1_SCL 0x4001b8b1
> + >;
> + };
> +
> + pinctrl_i2c2: i2c2grp {
> + fsl,pins = <
> + MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b8b1
> + MX6QDL_PAD_KEY_ROW3__I2C2_SDA 0x4001b8b1
> + >;
> + };
> +
> + pinctrl_i2c3: i2c3grp {
> + fsl,pins = <
> + MX6QDL_PAD_GPIO_5__I2C3_SCL 0x4001b8b1
> + MX6QDL_PAD_GPIO_16__I2C3_SDA 0x4001b8b1
> + >;
> + };
> +
> + pinctrl_pmic: pmicgrp {
> + fsl,pins = <
> + /* PMIC INT */
> + MX6QDL_PAD_GPIO_17__GPIO7_IO12 0x1b0b1
> + >;
> + };
> +
> + pinctrl_pwm2: pwm2grp {
> + fsl,pins = <
> + MX6QDL_PAD_DISP0_DAT9__PWM2_OUT 0x1b0b1
> + >;
> + };
> +
> + pinctrl_uart1: uart1grp {
> + fsl,pins = <
> + MX6QDL_PAD_CSI0_DAT11__UART1_RX_DATA 0x1b0b1
> + MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA 0x1b0b1
> + >;
> + };
> +
> + pinctrl_uart2: uart2grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD3_DAT4__UART2_RX_DATA 0x1b0b1
> + MX6QDL_PAD_SD3_DAT5__UART2_TX_DATA 0x1b0b1
> + MX6QDL_PAD_SD4_DAT6__UART2_CTS_B 0x1b0b1
> + MX6QDL_PAD_SD4_DAT5__UART2_RTS_B 0x1b0b1
> + >;
> + };
> +
> + pinctrl_uart3: uart3grp {
> + fsl,pins = <
> + MX6QDL_PAD_EIM_D25__UART3_RX_DATA 0x1b0b1
> + MX6QDL_PAD_EIM_D24__UART3_TX_DATA 0x1b0b1
> + MX6QDL_PAD_EIM_D23__UART3_CTS_B 0x1b0b1
> + MX6QDL_PAD_EIM_EB3__UART3_RTS_B 0x1b0b1
> + >;
> + };
> +
> + pinctrl_usbotg: usbotggrp {
> + fsl,pins = <
> + MX6QDL_PAD_ENET_RX_ER__USB_OTG_ID 0x17059
> + >;
> + };
> +
> + pinctrl_usdhc1: usdhc1grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD1_CMD__SD1_CMD 0x17059
> + MX6QDL_PAD_SD1_CLK__SD1_CLK 0x10059
> + MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17059
> + MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17059
> + MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17059
> + MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17059
> + /* WL_EN */
> + MX6QDL_PAD_SD3_DAT7__GPIO6_IO17 0x17071
> + /* WL_IRQ */
> + MX6QDL_PAD_SD3_RST__GPIO7_IO08 0x17071
> + >;
> + };
> +
> + pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
> + fsl,pins = <
> + MX6QDL_PAD_SD1_CMD__SD1_CMD 0x170B9
> + MX6QDL_PAD_SD1_CLK__SD1_CLK 0x100B9
> + MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x170B9
> + MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x170B9
> + MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x170B9
> + MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x170B9
> + >;
> + };
> +
> + pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
> + fsl,pins = <
> + MX6QDL_PAD_SD1_CMD__SD1_CMD 0x170F9
> + MX6QDL_PAD_SD1_CLK__SD1_CLK 0x100F9
> + MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x170F9
> + MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x170F9
> + MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x170F9
> + MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x170F9
> + >;
> + };
> +
> + pinctrl_usdhc2: usdhc2grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD2_CMD__SD2_CMD 0x17059
> + MX6QDL_PAD_SD2_CLK__SD2_CLK 0x10059
> + MX6QDL_PAD_SD2_DAT0__SD2_DATA0 0x17059
> + MX6QDL_PAD_SD2_DAT1__SD2_DATA1 0x17059
> + MX6QDL_PAD_SD2_DAT2__SD2_DATA2 0x17059
> + MX6QDL_PAD_SD2_DAT3__SD2_DATA3 0x17059
> + >;
> + };
> +
> + pinctrl_usdhc3: usdhc3grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD3_CMD__SD3_CMD 0x17059
> + MX6QDL_PAD_SD3_CLK__SD3_CLK 0x10059
> + MX6QDL_PAD_SD3_DAT0__SD3_DATA0 0x17059
> + MX6QDL_PAD_SD3_DAT1__SD3_DATA1 0x17059
> + MX6QDL_PAD_SD3_DAT2__SD3_DATA2 0x17059
> + MX6QDL_PAD_SD3_DAT3__SD3_DATA3 0x17059
> + >;
> + };
> +};
> +
> +&pcie {
> + fsl,tx-swing-full = <103>;
> + fsl,tx-swing-low = <103>;
> + reset-gpio = <&gpio4 11 GPIO_ACTIVE_LOW>;
> + status = "disabled";
> +};
> +
> +&pwm2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_pwm2>;
> + status = "disabled";
> +};
> +
> +&reg_arm {
> + vin-supply = <&sw1a_reg>;
> +};
> +
> +&reg_pu {
> + vin-supply = <&sw1c_reg>;
> +};
> +
> +&reg_soc {
> + vin-supply = <&sw1c_reg>;
> +};
> +
> +&uart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart1>;
> + status = "disabled";
> +};
> +
> +&uart2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart2 &pinctrl_bt>;
> + uart-has-rtscts;
> + status = "okay";
> +
> + bluetooth {
> + compatible = "ti,wl1835-st";
> + enable-gpios = <&gpio6 18 GPIO_ACTIVE_HIGH>;
> + };
> +};
> +
> +&uart3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart3>;
> + uart-has-rtscts;
> + status = "disabled";
> +};
> +
> +&usbh1 {
> + status = "disabled";
> +};
> +
> +&usbotg {
> + vbus-supply = <&reg_usb_otg_vbus>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usbotg>;
> + disable-over-current;
> + status = "disabled";
> +};
> +
> +&usdhc1 {
> + pinctrl-names = "default", "state_100mhz", "state_200mhz";
> + pinctrl-0 = <&pinctrl_usdhc1>;
> + pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
> + pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
> + bus-width = <4>;
> + vmmc-supply = <&reg_wl18xx_vmmc>;
> + non-removable;
> + wakeup-source;
> + keep-power-in-suspend;
> + cap-power-off-card;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + status = "okay";
> +
> + wlcore: wlcore@2 {
> + compatible = "ti,wl1835";
> + reg = <2>;
> + interrupt-parent = <&gpio6>;
> + interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
> + ref-clock-frequency = <38400000>;
> + };
> +};
> +
> +&usdhc2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usdhc2>;
> + no-1-8-v;
> + keep-power-in-suspend;
> + wakeup-source;
> + status = "disabled";
> +};
> +
> +&usdhc3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usdhc3>;
> + non-removable;
> + keep-power-in-suspend;
> + wakeup-source;
> + status = "okay";
> +};
> +
> +&ssi2 {
> + status = "okay";
> +};
> +
> +&snvs_poweroff {
> + status = "okay";
> +};

The last two nodes break the alphabetical order.

Shawn
> --
> 2.7.4
>

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