linux-kernel - Re: [PATCH v2] arm: dts: zynq: Add MicroZed board support

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Message-ID: <20160922205917.GS16583@xsjsorenbubuntu>
Date:   Thu, 22 Sep 2016 13:59:17 -0700
From:   Sören Brinkmann <soren.brinkmann@...inx.com>
To:     Jagan Teki <jagannadh.teki@...il.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Jagan Teki <jteki@...nedev.com>,
        Michal Simek <michal.simek@...inx.com>
Subject: Re: [PATCH v2] arm: dts: zynq: Add MicroZed board support

On Thu, 2016-09-22 at 18:51:29 +0530, Jagan Teki wrote:
> From: Jagan Teki <jteki@...nedev.com>
> 
> Added basic dts support for MicroZed board.
> 
> - UART
> - SDHCI
> - Ethernet
> 
> Cc: Soren Brinkmann <soren.brinkmann@...inx.com>
> Cc: Michal Simek <michal.simek@...inx.com>
> Signed-off-by: Jagan Teki <jteki@...nedev.com>
> ---
> Changes for v2:
> 	- Add SDHCI
> 	- Add Ethernet
> 
>  arch/arm/boot/dts/Makefile          |  1 +
>  arch/arm/boot/dts/zynq-microzed.dts | 95 +++++++++++++++++++++++++++++++++++++
>  2 files changed, 96 insertions(+)
>  create mode 100644 arch/arm/boot/dts/zynq-microzed.dts
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index faacd52..4d7b858 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -862,6 +862,7 @@ dtb-$(CONFIG_ARCH_VT8500) += \
>  	wm8750-apc8750.dtb \
>  	wm8850-w70v2.dtb
>  dtb-$(CONFIG_ARCH_ZYNQ) += \
> +	zynq-microzed.dtb \
>  	zynq-parallella.dtb \
>  	zynq-zc702.dtb \
>  	zynq-zc706.dtb \
> diff --git a/arch/arm/boot/dts/zynq-microzed.dts b/arch/arm/boot/dts/zynq-microzed.dts
> new file mode 100644
> index 0000000..9e64496
> --- /dev/null
> +++ b/arch/arm/boot/dts/zynq-microzed.dts
> @@ -0,0 +1,95 @@
> +/*
> + * Copyright (C) 2015 Jagan Teki <jteki@...nedev.com>
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +/dts-v1/;
> +/include/ "zynq-7000.dtsi"
> +
> +/ {
> +	model = "Zynq MicroZED Development Board";
> +	compatible = "xlnx,zynq-microzed", "xlnx,zynq-7000";
> +
> +	aliases {
> +		ethernet0 = &gem0;
> +		serial0 = &uart1;
> +	};
> +
> +	memory {
> +		device_type = "memory";
> +		reg = <0x0 0x40000000>;
> +	};
> +
> +	chosen {
> +		bootargs = "earlycon";
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	usb_phy0: phy0 {
> +		compatible = "usb-nop-xceiv";
> +		#phy-cells = <0>;
> +	};
> +};
> +
> +&clkc {
> +	ps-clk-frequency = <33333333>;
> +};
> +
> +&gem0 {
> +	status = "okay";
> +	phy-mode = "rgmii-id";
> +	phy-handle = <&ethernet_phy>;
> +
> +	ethernet_phy: ethernet-phy@0 {
> +		reg = <0>;
> +	};
> +};
> +
> +&sdhci0 {
> +	status = "okay";
> +};
> +
> +&uart1 {
> +	status = "okay";
> +};
> +
> +&usb0 {
> +	status = "okay";
> +	dr_mode = "host";
> +	usb-phy = <&usb_phy0>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_usb0_default>;
> +};
> +
> +&pinctrl0 {
> +	pinctrl_usb0_default: usb0-default {
> +		mux {
> +			groups = "usb0_0_grp";
> +			function = "usb0";
> +		};
> +
> +		conf {
> +			groups = "usb0_0_grp";
> +			slew-rate = <0>;
> +			io-standard = <1>;
> +		};
> +
> +		conf-rx {
> +			pins = "MIO29", "MIO31", "MIO36";
> +			bias-high-impedance;
> +		};
> +
> +		conf-tx {
> +			pins = "MIO28", "MIO30", "MIO32", "MIO33", "MIO34",
> +			       "MIO35", "MIO37", "MIO38", "MIO39";
> +			bias-disable;
> +		};
> +	};
> +};

I guess it's not strictly required, but shouldn't there be pinctrl
descriptions for all devices?

	Sören