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Date:   Sun, 24 Apr 2022 20:28:08 +0800
From:   Shawn Guo <shawnguo@kernel.org>
To:     Manoj Sai <abbaraju.manojsai@amarulasolutions.com>
Cc:     Rob Herring <robh+dt@kernel.org>, Li Yang <leoyang.li@nxp.com>,
        Fabio Estevam <festevam@gmail.com>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        Matteo Lisi <matteo.lisi@engicam.com>,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        NXP Linux Team <linux-imx@nxp.com>,
        linux-amarula@amarulasolutions.com,
        Jagan Teki <jagan@amarulasolutions.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, Rob Herring <robh@kernel.org>,
        Suniel Mahesh <sunil@amarulasolutions.com>,
        Michael Nazzareno Trimarchi <michael@amarulasolutions.com>
Subject: Re: [PATCH v2 3/3] Engicam EDIMM2.2 Starter Kit is an EDIMM 2.2 Form
 Factor CapacitiveEvaluation Board.
Message-ID: <20220424122808.GT391514@dragon>
References: <20220330191437.614065-2-abbaraju.manojsai@amarulasolutions.com>
 <20220418144907.327511-1-abbaraju.manojsai@amarulasolutions.com>
 <20220418144907.327511-3-abbaraju.manojsai@amarulasolutions.com>
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In-Reply-To: <20220418144907.327511-3-abbaraju.manojsai@amarulasolutions.com>
Precedence: bulk

On Mon, Apr 18, 2022 at 08:19:07PM +0530, Manoj Sai wrote:
> Genaral features:
> - LCD 7" C.Touch
> - microSD slot
> - Ethernet 1Gb
> - Wifi/BT
> - 2x LVDS Full HD interfaces
> - 3x USB 2.0
> - 1x USB 3.0
> - HDMI Out
> - Plus PCIe
> - MIPI CSI
> - 2x CAN
> - Audio Out
> 
> i.Core MX8M Plus is an EDIMM SoM based on NXP i.MX8M Plus from Engicam.
> 
> i.Core MX8M Plus needs to mount on top of this Evaluation board for
> creating complete i.Core MX8M Plus EDIMM2.2 Starter Kit.
> 
> Add support for it.
> 
> Signed-off-by: Manoj Sai <abbaraju.manojsai@amarulasolutions.com>
> Signed-off-by: Matteo Lisi <matteo.lisi@engicam.com>
> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>

Please have a short patch subject and prefix it like 'arm64: dts: ...'

> ---
> Changes for v2:
>  -corrected the naming convetion of nodes as per existing
>   sources and bindings.
>  -added the iomux to the end as per nxp convention.
> ---
>  arch/arm64/boot/dts/freescale/Makefile        |   1 +
>  .../freescale/imx8mp-icore-mx8mp-edimm2.2.dts | 176 ++++++++++++++++++
>  2 files changed, 177 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts
> 
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index 85c2c9ba5110..1c06393b8ba9 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -83,6 +83,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dahlia.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dev.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dahlia.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev.dtb
> +dtb-$(CONFIG_ARCH_MXC) += imx8mp-icore-mx8mp-edimm2.2.dtb

Keep the list sort alphabetically.

>  dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mq-hummingboard-pulse.dtb
>  dtb-$(CONFIG_ARCH_MXC) += imx8mq-kontron-pitx-imx8m.dtb
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts b/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts
> new file mode 100644
> index 000000000000..d623ea9dea2b
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-icore-mx8mp-edimm2.2.dts
> @@ -0,0 +1,176 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright (c) 2018 NXP
> + * Copyright (c) 2019 Engicam srl
> + * Copyright (c) 2020 Amarula Solutons(India)
> + */
> +
> +/dts-v1/;
> +
> +#include "imx8mp.dtsi"
> +#include "imx8mp-icore-mx8mp.dtsi"
> +#include <dt-bindings/usb/pd.h>
> +
> +/ {
> +	model = "Engicam i.Core MX8M Plus EDIMM2.2 Starter Kit";
> +	compatible = "engicam,icore-mx8mp-edimm2.2", "engicam,icore-mx8mp",
> +		     "fsl,imx8mp";
> +
> +	chosen {
> +		stdout-path = &uart2;
> +	};
> +
> +	reg_usb1_vbus: regulator-usb1 {
> +		compatible = "regulator-fixed";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_reg_usb1>;
> +		regulator-name = "usb1_host_vbus";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		regulator-always-on;

Why always-on?  Shouldn't be controlled by client device (usb1)?

> +		gpio = <&gpio1 14 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +	};
> +
> +	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;
> +	};
> +};
> +
> +/* Ethernet */
> +&eqos {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_eqos>;
> +	phy-mode = "rgmii-id";
> +	phy-handle = <&ethphy0>;
> +	status = "okay";
> +
> +	mdio {
> +		compatible = "snps,dwmac-mdio";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		ethphy0: ethernet-phy@7 {
> +			compatible = "ethernet-phy-ieee802.3-c22";
> +			micrel,led-mode = <0>;
> +			reg = <7>;
> +		};
> +	};
> +};
> +
> +/* console */
> +&uart2 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_uart2>;
> +	status = "okay";
> +};
> +
> +&usb3_phy0 {
> +	status = "okay";
> +};
> +
> +&usb3_0 {

Keep labeling nodes sort alphabetically.

> +	status = "okay";
> +};
> +
> +&usb_dwc3_0 {
> +	dr_mode = "host";
> +	status = "okay";
> +};
> +
> +&usb3_phy1 {
> +	status = "okay";
> +};
> +
> +&usb3_1 {
> +	status = "okay";
> +};
> +
> +&usb_dwc3_1 {
> +	dr_mode = "host";
> +	status = "okay";
> +};
> +
> +/* SDCARD */
> +&usdhc2 {
> +	pinctrl-names = "default" ;
> +	pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>;
> +	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
> +	vmmc-supply = <&reg_usdhc2_vmmc>;
> +	bus-width = <4>;
> +	status = "okay";
> +};
> +
> +&iomuxc {
> +	pinctrl_eqos: eqosgrp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_ENET_MDC__ENET_QOS_MDC				0x3
> +			MX8MP_IOMUXC_ENET_MDIO__ENET_QOS_MDIO				0x3
> +			MX8MP_IOMUXC_ENET_RD0__ENET_QOS_RGMII_RD0			0x91
> +			MX8MP_IOMUXC_ENET_RD1__ENET_QOS_RGMII_RD1			0x91
> +			MX8MP_IOMUXC_ENET_RD2__ENET_QOS_RGMII_RD2			0x91
> +			MX8MP_IOMUXC_ENET_RD3__ENET_QOS_RGMII_RD3			0x91
> +			MX8MP_IOMUXC_ENET_RXC__CCM_ENET_QOS_CLOCK_GENERATE_RX_CLK	0x91
> +			MX8MP_IOMUXC_ENET_RX_CTL__ENET_QOS_RGMII_RX_CTL			0x91
> +			MX8MP_IOMUXC_ENET_TD0__ENET_QOS_RGMII_TD0			0x1f
> +			MX8MP_IOMUXC_ENET_TD1__ENET_QOS_RGMII_TD1			0x1f
> +			MX8MP_IOMUXC_ENET_TD2__ENET_QOS_RGMII_TD2			0x1f
> +			MX8MP_IOMUXC_ENET_TD3__ENET_QOS_RGMII_TD3			0x1f
> +			MX8MP_IOMUXC_ENET_TX_CTL__ENET_QOS_RGMII_TX_CTL			0x1f
> +			MX8MP_IOMUXC_ENET_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK	0x1f
> +			MX8MP_IOMUXC_NAND_DATA01__GPIO3_IO07				0x19
> +		>;
> +	};
> +
> +	pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19	0x41
> +		>;
> +	};
> +
> +	pinctrl_uart2: uart2grp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_UART2_RXD__UART2_DCE_RX	0x49
> +			MX8MP_IOMUXC_UART2_TXD__UART2_DCE_TX	0x49
> +		>;
> +	};
> +
> +	pinctrl_uart3: uart3grp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_UART3_RXD__UART3_DCE_RX	0x140
> +			MX8MP_IOMUXC_UART3_TXD__UART3_DCE_TX	0x140
> +			MX8MP_IOMUXC_SD1_STROBE__UART3_DCE_CTS	0x140
> +		>;
> +	};
> +
> +	pinctrl_reg_usb1: regusb1grp {

Keep pinctrl nodes sort alphabetically.

Shawn

> +		fsl,pins = <
> +			MX8MP_IOMUXC_GPIO1_IO14__GPIO1_IO14	0x19
> +		>;
> +	};
> +
> +	pinctrl_usdhc2_gpio: usdhc2gpiogrp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SD2_CD_B__GPIO2_IO12	0x1c4
> +		>;
> +	};
> +
> +	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	0xc1
> +		>;
> +	};
> +};
> -- 
> 2.25.1
>