Re: [PATCH 2/2] arm64: dts: imx8mm: Add Gateworks IMX8MM Development Kits

From: Krzysztof Kozlowski
Date: Thu Dec 24 2020 - 07:14:01 EST

On Wed, Dec 23, 2020 at 02:23:16PM -0800, Tim Harvey wrote:
> The Gateworks Venice GW71xx-0x/GW72xx-0x/GW73xx-0x are development
> kits comprised of a GW700x SoM and a Baseboard.
>
> The GW700x SoM contains:
> - IMX8MM SoC
> - LPDDR4 DRAM
> - eMMC FLASH
> - Gateworks System Controller (eeprom/pushbutton/reset/voltage-monitor)
> - GbE PHY connected to the IMX8MM FEC
> - Power Management IC
>
> The GW71xx Baseboard contains:
> - 1x MiniPCIe Socket with USB2.0, PCIe, and SIM
> - 1x RJ45 GbE (IMX8MM FEC)
> - PCIe Clock generator
> - GPS and accelerometer
> - 1x USB 2.0 Front Panel connector
> - wide range power supply
>
> The GW72xx Baseboard contains:
> - 2x MiniPCIe Socket with USB2.0, PCIe, and SIM
> - 2x RJ45 GbE (IMX8MM FEC and LAN743x)
> - 1x MicroSD connector
> - 1x USB 2.0 Front Panel connector
> - 1x SPI connector
> - PCIe Clock generator
> - GPS and accelerometer
> - Media Expansion connector (MIPI-CSI/MIPI-DSI/GPIO/I2S)
> - wide range power supply
>
> The GW73xx Baseboard contains:
> - 3x MiniPCIe Socket with USB2.0, PCIe, and SIM
> - 2x RJ45 GbE (IMX8MM FEC and LAN743x)
> - 1x MicroSD connector
> - 1x USB 2.0 Front Panel connector
> - 1x SPI connector
> - WiFi/BT
> - PCIe Clock generator
> - GPS and accelerometer
> - Media Expansion connector (MIPI-CSI/MIPI-DSI/GPIO/I2S)
> - wide range power supply
>
> Signed-off-by: Tim Harvey <tharvey@xxxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/freescale/Makefile | 3 +
> .../boot/dts/freescale/imx8mm-venice-gw700x.dtsi | 482 +++++++++++++++++++++
> .../boot/dts/freescale/imx8mm-venice-gw71xx-0x.dts | 19 +
> .../boot/dts/freescale/imx8mm-venice-gw71xx.dtsi | 186 ++++++++
> .../boot/dts/freescale/imx8mm-venice-gw72xx-0x.dts | 20 +
> .../boot/dts/freescale/imx8mm-venice-gw72xx.dtsi | 311 +++++++++++++
> .../boot/dts/freescale/imx8mm-venice-gw73xx-0x.dts | 19 +
> .../boot/dts/freescale/imx8mm-venice-gw73xx.dtsi | 363 ++++++++++++++++
> 8 files changed, 1403 insertions(+)
> create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi
> create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx-0x.dts
> create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
> create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x.dts
> create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi
> create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x.dts
> create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi
>
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index f8d5943..ecdd233 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -32,6 +32,9 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-beacon-kit.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mm-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mm-ddr4-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mm-var-som-symphony.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw71xx-0x.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mn-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mn-ddr4-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mn-var-som-symphony.dtb

(...)

I have few more thoughts below.

> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
> new file mode 100644
> index 00000000..a4eeb0d
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
> @@ -0,0 +1,186 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2020 Gateworks Corporation
> + */
> +
> +/ {
> + aliases {
> + usb0 = &usbotg1;
> + usb1 = &usbotg2;
> + };
> +
> + leds {
> + compatible = "gpio-leds";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_gpio_leds>;
> +
> + user1 { /* GRN */
> + label = "user1";
> + gpios = <&gpio5 5 GPIO_ACTIVE_HIGH>;
> + default-state = "on";
> + linux,default-trigger = "heartbeat";
> + };
> +
> + user2 { /* RED */
> + label = "user2";
> + gpios = <&gpio5 4 GPIO_ACTIVE_HIGH>;
> + default-state = "off";
> + };
> + };
> +
> + pps {
> + compatible = "pps-gpio";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_pps>;
> + gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
> + status = "okay";
> + };
> +
> + reg_usb_otg1_vbus: regulator-usb-otg1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_reg_usb1_en>;
> + compatible = "regulator-fixed";
> + regulator-name = "usb_otg1_vbus";
> + gpio = <&gpio1 12 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <5000000>;
> + };
> +};
> +
> +&ecspi2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_spi2>;
> + cs-gpios = <&gpio5 13 GPIO_ACTIVE_HIGH>;
> + status = "okay";

Why is it enabled? What's here?

> +};
> +
> +&i2c2 {
> + clock-frequency = <400000>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c2>;
> + status = "okay";
> +
> + accel@19 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_accel>;
> + compatible = "st,lis2de12";
> + reg = <0x19>;
> + st,drdy-int-pin = <1>;
> + interrupt-parent = <&gpio4>;
> + interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
> + interrupt-names = "INT1";
> + };
> +};
> +
> +&i2c3 {
> + clock-frequency = <400000>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c3>;
> + status = "okay";

Why is it enabled? What's here?

> +};
> +
> +&sai3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_sai3>;
> + assigned-clocks = <&clk IMX8MM_CLK_SAI3>;
> + assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
> + assigned-clock-rates = <24576000>;
> + status = "okay";
> +};
> +
> +&uart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart1>;
> + status = "okay";
> +};
> +
> +&uart3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart3>;
> + status = "okay";
> +};

Why both UARTs are enabled on the Carrier? The console is UART2.

Best regards,
Krzysztof

> +
> +&usbotg1 {
> + dr_mode = "otg";
> + vbus-supply = <&reg_usb_otg1_vbus>;
> + status = "okay";
> +};
> +
> +&usbotg2 {
> + dr_mode = "host";
> + status = "okay";
> +};
> +
> +&iomuxc {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
> +
> + pinctrl_hog: hoggrp {
> + fsl,pins = <
> + MX8MM_IOMUXC_SPDIF_TX_GPIO5_IO3 0x40000041 /* PLUG_TEST */
> + MX8MM_IOMUXC_GPIO1_IO06_GPIO1_IO6 0x40000041 /* PCI_USBSEL */
> + MX8MM_IOMUXC_SAI1_RXD5_GPIO4_IO7 0x40000041 /* PCIE_WDIS# */
> + MX8MM_IOMUXC_GPIO1_IO07_GPIO1_IO7 0x40000041 /* DIO0 */
> + MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9 0x40000041 /* DIO1 */
> + MX8MM_IOMUXC_SAI1_RXD1_GPIO4_IO3 0x40000041 /* DIO2 */
> + MX8MM_IOMUXC_SAI1_RXD2_GPIO4_IO4 0x40000041 /* DIO2 */
> + >;
> + };
> +
> + pinctrl_accel: accelirq {
> + fsl,pins = <
> + MX8MM_IOMUXC_SAI1_RXD3_GPIO4_IO5 0x159
> + >;
> + };
> +
> + pinctrl_gpio_leds: gpioledgrp {
> + fsl,pins = <
> + MX8MM_IOMUXC_SPDIF_EXT_CLK_GPIO5_IO5 0x19
> + MX8MM_IOMUXC_SPDIF_RX_GPIO5_IO4 0x19
> + >;
> + };
> +
> + pinctrl_i2c3: i2c3grp {
> + fsl,pins = <
> + MX8MM_IOMUXC_I2C3_SCL_I2C3_SCL 0x400001c3
> + MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA 0x400001c3
> + >;
> + };
> +
> + pinctrl_pps: ppsgrp {
> + fsl,pins = <
> + MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15 0x41
> + >;
> + };
> +
> + pinctrl_reg_usb1_en: regusb1grp {
> + fsl,pins = <
> + MX8MM_IOMUXC_GPIO1_IO12_GPIO1_IO12 0x41
> + MX8MM_IOMUXC_GPIO1_IO13_USB1_OTG_OC 0x41
> + >;
> + };
> +
> + pinctrl_spi2: spi2grp {
> + fsl,pins = <
> + MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK 0xd6
> + MX8MM_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI 0xd6
> + MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK 0xd6
> + MX8MM_IOMUXC_ECSPI2_SS0_GPIO5_IO13 0xd6
> + >;
> + };
> +
> + pinctrl_uart1: uart1grp {
> + fsl,pins = <
> + MX8MM_IOMUXC_UART1_RXD_UART1_DCE_RX 0x140
> + MX8MM_IOMUXC_UART1_TXD_UART1_DCE_TX 0x140
> + >;
> + };
> +
> + pinctrl_uart3: uart3grp {
> + fsl,pins = <
> + MX8MM_IOMUXC_UART3_RXD_UART3_DCE_RX 0x140
> + MX8MM_IOMUXC_UART3_TXD_UART3_DCE_TX 0x140
> + >;
> + };
> +};