RE: [PATCH 3/3] arm64: dts: freescale: Add support for i.MX8QXP AI_ML board

From: Aisheng Dong
Date: Wed Jul 17 2019 - 06:40:19 EST

> From: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> Sent: Wednesday, July 17, 2019 2:11 PM
>
> Add support for i.MX8QXP AI_ML board from Einfochips. This board is one of
> the Consumer Edition boards of the 96Boards family based on i.MX8QXP SoC
> from NXP/Freescale.
>
> The initial support includes following peripherals which are tested and known
> to be working:
>
> 1. Debug serial via UART2
> 2. uSD
> 3. WiFi
> 4. Ethernet
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>

The patch looks good to me. Only a few nitpicks below.
Otherwise,
Reviewed-by: Dong Aisheng <aisheng.dong@xxxxxxx>

Regards
Dong Aisheng

> ---
> arch/arm64/boot/dts/freescale/Makefile | 1 +
> .../boot/dts/freescale/imx8qxp-ai_ml.dts | 249 ++++++++++++++++++
> 2 files changed, 250 insertions(+)
> create mode 100644 arch/arm64/boot/dts/freescale/imx8qxp-ai_ml.dts
>
> diff --git a/arch/arm64/boot/dts/freescale/Makefile
> b/arch/arm64/boot/dts/freescale/Makefile
> index 0bd122f60549..bd8460549d1a 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -24,4 +24,5 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-rmb3.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-zest.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx8qxp-ai_ml.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb diff --git
> a/arch/arm64/boot/dts/freescale/imx8qxp-ai_ml.dts
> b/arch/arm64/boot/dts/freescale/imx8qxp-ai_ml.dts
> new file mode 100644
> index 000000000000..dcd36e57d916
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8qxp-ai_ml.dts
> @@ -0,0 +1,249 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2018 Einfochips
> + * Copyright 2019 Linaro Ltd.
> + */
> +
> +/dts-v1/;
> +
> +#include "imx8qxp.dtsi"
> +
> +/ {
> + model = "Einfochips i.MX8QXP AI_ML";
> + compatible = "einfochips,imx8qxp-ai_ml", "fsl,imx8qxp";
> +
> + aliases {
> + serial1 = &adma_lpuart1;
> + serial2 = &adma_lpuart2;
> + serial3 = &adma_lpuart3;
> + };
> +
> + chosen {
> + stdout-path = &adma_lpuart2;
> + };
> +
> + memory@80000000 {
> + device_type = "memory";
> + reg = <0x00000000 0x80000000 0 0x80000000>;
> + };
> +
> + leds {
> + compatible = "gpio-leds";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_leds>;
> +
> + user_led1 {
> + label = "green:user1";
> + gpios = <&lsio_gpio4 16 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "heartbeat";
> + };
> +
> + user_led2 {
> + label = "green:user2";
> + gpios = <&lsio_gpio0 6 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "none";
> + };
> +
> + user_led3 {
> + label = "green:user3";
> + gpios = <&lsio_gpio0 7 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "mmc1";
> + default-state = "off";
> + };
> +
> + user_led4 {
> + label = "green:user4";
> + gpios = <&lsio_gpio4 21 GPIO_ACTIVE_HIGH>;
> + panic-indicator;
> + linux,default-trigger = "none";
> + };
> +
> + wlan_active_led {
> + label = "yellow:wlan";
> + gpios = <&lsio_gpio4 17 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "phy0tx";
> + default-state = "off";
> + };
> +
> + bt_active_led {
> + label = "blue:bt";
> + gpios = <&lsio_gpio4 18 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "hci0-power";
> + default-state = "off";
> + };
> + };
> +
> + sdio_pwrseq: sdio-pwrseq {
> + compatible = "mmc-pwrseq-simple";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_wifi_reg_on>;
> + reset-gpios = <&lsio_gpio3 24 GPIO_ACTIVE_LOW>;
> + };
> +};
> +
> +/* BT */
> +&adma_lpuart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_lpuart0>;
> + uart-has-rtscts;
> + status = "okay";
> +};
> +
> +/* LS-I2C0 */

Typo?

> +&adma_lpuart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_lpuart1>;
> + status = "okay";
> +};
> +
> +/* Debug */
> +&adma_lpuart2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_lpuart2>;
> + status = "okay";
> +};
> +
> +/* PCI-E */

A bit confusing for the comments...

> +&adma_lpuart3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_lpuart3>;
> + status = "okay";
> +};
> +
> +&fec1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_fec1>;
> + phy-mode = "rgmii-id";
> + phy-handle = <&ethphy0>;
> + fsl,magic-packet;
> + status = "okay";
> +
> + mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + ethphy0: ethernet-phy@0 {
> + compatible = "ethernet-phy-ieee802.3-c22";
> + reg = <0>;
> + };
> + };
> +};
> +
> +/* WiFi */
> +&usdhc1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usdhc1>;
> + bus-width = <4>;
> + no-sd;
> + non-removable;
> + mmc-pwrseq = <&sdio_pwrseq>;
> + #address-cells = <1>;
> + #size-cells = <0>;

Nitpick: we usually put this two properties at the first place.

> + status = "okay";
> +
> + brcmf: wifi@1 {
> + reg = <1>;
> + compatible = "brcm,bcm4329-fmac";
> + };
> +};
> +
> +/* SD */
> +&usdhc2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usdhc2>;
> + bus-width = <4>;
> + cd-gpios = <&lsio_gpio4 22 GPIO_ACTIVE_LOW>;
> + status = "okay";
> +};
> +
> +&iomuxc {
> + pinctrl_fec1: fec1grp {
> + fsl,pins = <
> + IMX8QXP_ENET0_MDC_CONN_ENET0_MDC
> 0x06000020
> + IMX8QXP_ENET0_MDIO_CONN_ENET0_MDIO
> 0x06000020
> + IMX8QXP_ENET0_RGMII_TX_CTL_CONN_ENET0_RGMII_TX_CTL
> 0x06000020
> + IMX8QXP_ENET0_RGMII_TXC_CONN_ENET0_RGMII_TXC
> 0x06000020
> + IMX8QXP_ENET0_RGMII_TXD0_CONN_ENET0_RGMII_TXD0
> 0x06000020
> + IMX8QXP_ENET0_RGMII_TXD1_CONN_ENET0_RGMII_TXD1
> 0x06000020
> + IMX8QXP_ENET0_RGMII_TXD2_CONN_ENET0_RGMII_TXD2
> 0x06000020
> + IMX8QXP_ENET0_RGMII_TXD3_CONN_ENET0_RGMII_TXD3
> 0x06000020
> + IMX8QXP_ENET0_RGMII_RXC_CONN_ENET0_RGMII_RXC
> 0x06000020
> + IMX8QXP_ENET0_RGMII_RX_CTL_CONN_ENET0_RGMII_RX_CTL
> 0x06000020
> + IMX8QXP_ENET0_RGMII_RXD0_CONN_ENET0_RGMII_RXD0
> 0x06000020
> + IMX8QXP_ENET0_RGMII_RXD1_CONN_ENET0_RGMII_RXD1
> 0x06000020
> + IMX8QXP_ENET0_RGMII_RXD2_CONN_ENET0_RGMII_RXD2
> 0x06000020
> + IMX8QXP_ENET0_RGMII_RXD3_CONN_ENET0_RGMII_RXD3
> 0x06000020
> + >;
> + };
> +
> + pinctrl_leds: ledsgrp{
> + fsl,pins = <
> + IMX8QXP_ESAI0_TX2_RX3_LSIO_GPIO0_IO06
> 0x00000021
> + IMX8QXP_ESAI0_TX3_RX2_LSIO_GPIO0_IO07
> 0x00000021
> + IMX8QXP_EMMC0_DATA7_LSIO_GPIO4_IO16
> 0x00000021
> + IMX8QXP_USDHC1_WP_LSIO_GPIO4_IO21
> 0x00000021
> + IMX8QXP_EMMC0_STROBE_LSIO_GPIO4_IO17
> 0x00000021
> + IMX8QXP_EMMC0_RESET_B_LSIO_GPIO4_IO18
> 0x00000021
> + >;
> + };
> +
> + pinctrl_lpuart0: lpuart0grp {
> + fsl,pins = <
> + IMX8QXP_UART0_RX_ADMA_UART0_RX
> 0X06000020
> + IMX8QXP_UART0_TX_ADMA_UART0_TX
> 0X06000020
> + IMX8QXP_FLEXCAN0_TX_ADMA_UART0_CTS_B
> 0x06000020
> + IMX8QXP_FLEXCAN0_RX_ADMA_UART0_RTS_B
> 0x06000020
> + >;
> + };
> +
> + pinctrl_lpuart1: lpuart1grp {
> + fsl,pins = <
> + IMX8QXP_UART1_RX_ADMA_UART1_RX
> 0X06000020
> + IMX8QXP_UART1_TX_ADMA_UART1_TX
> 0X06000020
> + >;
> + };
> +
> + pinctrl_lpuart2: lpuart2grp {
> + fsl,pins = <
> + IMX8QXP_UART2_RX_ADMA_UART2_RX
> 0X06000020
> + IMX8QXP_UART2_TX_ADMA_UART2_TX
> 0X06000020
> + >;
> + };
> +
> + pinctrl_lpuart3: lpuart3grp {
> + fsl,pins = <
> + IMX8QXP_FLEXCAN2_RX_ADMA_UART3_RX
> 0X06000020
> + IMX8QXP_FLEXCAN2_TX_ADMA_UART3_TX
> 0X06000020
> + >;
> + };
> +
> + pinctrl_usdhc1: usdhc1grp {
> + fsl,pins = <
> + IMX8QXP_EMMC0_CLK_CONN_EMMC0_CLK
> 0x06000041
> + IMX8QXP_EMMC0_CMD_CONN_EMMC0_CMD
> 0x00000021
> + IMX8QXP_EMMC0_DATA0_CONN_EMMC0_DATA0
> 0x00000021
> + IMX8QXP_EMMC0_DATA1_CONN_EMMC0_DATA1
> 0x00000021
> + IMX8QXP_EMMC0_DATA2_CONN_EMMC0_DATA2
> 0x00000021
> + IMX8QXP_EMMC0_DATA3_CONN_EMMC0_DATA3
> 0x00000021
> + >;
> + };
> +
> + pinctrl_usdhc2: usdhc2grp {
> + fsl,pins = <
> + IMX8QXP_USDHC1_CLK_CONN_USDHC1_CLK
> 0x06000041
> + IMX8QXP_USDHC1_CMD_CONN_USDHC1_CMD
> 0x00000021
> + IMX8QXP_USDHC1_DATA0_CONN_USDHC1_DATA0
> 0x00000021
> + IMX8QXP_USDHC1_DATA1_CONN_USDHC1_DATA1
> 0x00000021
> + IMX8QXP_USDHC1_DATA2_CONN_USDHC1_DATA2
> 0x00000021
> + IMX8QXP_USDHC1_DATA3_CONN_USDHC1_DATA3
> 0x00000021
> + IMX8QXP_USDHC1_VSELECT_CONN_USDHC1_VSELECT
> 0x00000021
> + IMX8QXP_USDHC1_CD_B_LSIO_GPIO4_IO22
> 0x00000021
> + >;
> + };
> +
> + pinctrl_wifi_reg_on: wifiregongrp {
> + fsl,pins = <
> + IMX8QXP_QSPI0B_SS1_B_LSIO_GPIO3_IO24
> 0x00000021
> + >;
> + };
> +};
> --
> 2.17.1