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Date:   Wed, 20 Feb 2019 09:18:36 +0100
From:   Lucas Stach <l.stach@...gutronix.de>
To:     Andrey Smirnov <andrew.smirnov@...il.com>,
        Shawn Guo <shawnguo@...nel.org>
Cc:     Fabio Estevam <fabio.estevam@....com>,
        Chris Healy <cphealy@...il.com>,
        Leonard Crestez <leonard.crestez@....com>,
        "A.s. Dong" <aisheng.dong@....com>,
        Richard Zhu <hongxing.zhu@....com>, linux-imx@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 5/5] arm64: dts: imx8mq-evk: Enable PCIE0 interface

Am Dienstag, den 19.02.2019, 17:58 -0800 schrieb Andrey Smirnov:
> Enable PCIE0 interface connected to BCM4356 WiFi/Bluetooth module.
> 
> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
> Cc: Shawn Guo <shawnguo@...nel.org>
> Cc: Fabio Estevam <fabio.estevam@....com>
> Cc: Chris Healy <cphealy@...il.com>
> Cc: Lucas Stach <l.stach@...gutronix.de>
> Cc: Leonard Crestez <leonard.crestez@....com>
> Cc: "A.s. Dong" <aisheng.dong@....com>
> Cc: Richard Zhu <hongxing.zhu@....com>
> Cc: linux-imx@....com
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org

Reviewed-by: Lucas Stach <l.stach@...gutronix.de>

> ---
>  arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 42 ++++++++++++++++++++
>  1 file changed, 42 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> index 64acccc4bfcb..226aeb9791a5 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> @@ -31,6 +31,12 @@
>  		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
>  		enable-active-high;
>  	};
> +
> +	pcie0_refclk: pcie0-refclk {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <100000000>;
> +	};
>  };
>  
>  &fec1 {
> @@ -40,6 +46,17 @@
>  	status = "okay";
>  };
>  
> +&gpio5 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_wifi_reset>;
> +
> + 	wl-reg-on {
> +		gpio-hog;
> +		gpios = <29 GPIO_ACTIVE_HIGH>;
> +		output-high;
> +	};
> +};
> +
>  &i2c1 {
>  	clock-frequency = <100000>;
>  	pinctrl-names = "default";
> @@ -131,6 +148,18 @@
>  	};
>  };
>  
> +&pcie0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_pcie0>;
> +	reset-gpio = <&gpio5 28 GPIO_ACTIVE_LOW>;
> +	clocks = <&clk IMX8MQ_CLK_PCIE1_ROOT>,
> +		 <&clk IMX8MQ_CLK_PCIE1_AUX>,
> +		 <&clk IMX8MQ_CLK_PCIE1_PHY>,
> +		 <&pcie0_refclk>;
> +	clock-names = "pcie", "pcie_aux", "pcie_phy", "pcie_bus";
> +	status = "okay";
> +};
> +
>  &uart1 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pinctrl_uart1>;
> @@ -195,6 +224,13 @@
>  		>;
>  	};
>  
> +	pinctrl_pcie0: pcie0grp {
> +		fsl,pins = <
> +			MX8MQ_IOMUXC_I2C4_SCL_PCIE1_CLKREQ_B		0x76
> +			MX8MQ_IOMUXC_UART4_RXD_GPIO5_IO28		0x16
> +		>;
> +	};
> +
>  	pinctrl_reg_usdhc2: regusdhc2grpgpio {
>  		fsl,pins = <
>  			MX8MQ_IOMUXC_SD2_RESET_B_GPIO2_IO19		0x41
> @@ -300,4 +336,10 @@
>  			MX8MQ_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B		0xc6
>  		>;
>  	};
> +
> +	pinctrl_wifi_reset: wifiresetgrp {
> +		fsl,pins = <
> +			MX8MQ_IOMUXC_UART4_TXD_GPIO5_IO29		0x16
> +		>;
> +	};
>  };

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