linux-kernel - Re: [PATCH] arm64: dts: ulcb-kf: Add support for TI WL1837

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Message-ID: <20190425111245.GA7258@vmlxhi-102.adit-jv.com>
Date:   Thu, 25 Apr 2019 13:12:45 +0200
From:   Eugeniu Rosca <erosca@...adit-jv.com>
To:     Simon Horman <horms+renesas@...ge.net.au>,
        Simon Horman <horms@...ge.net.au>,
        Spyridon Papageorgiou <spapageorgiou@...adit-jv.com>
CC:     <magnus.damm@...il.com>, <robh+dt@...nel.org>,
        <mark.rutland@....com>, <linux-renesas-soc@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <tfranzen@...adit-jv.com>, Eugeniu Rosca <erosca@...adit-jv.com>,
        Eugeniu Rosca <roscaeugeniu@...il.com>
Subject: Re: [PATCH] arm64: dts: ulcb-kf: Add support for TI WL1837

Hi Simon,

Do we have any chance getting this upstream? If so, would you kindly
list the acceptance criteria we have to conform to?

Many thanks.

On Thu, Apr 11, 2019 at 02:41:03PM +0200, Spyridon Papageorgiou wrote:
> This patch adds description of TI WL1837 and links interfaces
> to communicate with the IC, namely the SDIO interface to WLAN.
> 
> Signed-off-by: Spyridon Papageorgiou <spapageorgiou@...adit-jv.com>
> ---
>  arch/arm64/boot/dts/renesas/ulcb-kf.dtsi | 49 ++++++++++++++++++++++++++++++++
>  1 file changed, 49 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
> index 7a09576..27851a7 100644
> --- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
> +++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
> @@ -38,6 +38,18 @@
>  		regulator-min-microvolt = <5000000>;
>  		regulator-max-microvolt = <5000000>;
>  	};
> +
> +	wlan_en: regulator-wlan_en {
> +		compatible = "regulator-fixed";
> +		regulator-name = "wlan-en-regulator";
> +
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +
> +		gpio = <&gpio_exp_74 4 GPIO_ACTIVE_HIGH>;
> +		startup-delay-us = <70000>;
> +		enable-active-high;
> +	};
>  };
>  
>  &can0 {
> @@ -88,6 +100,13 @@
>  			line-name = "Audio_Out_OFF";
>  		};
>  
> +		sd-wifi-mux {
> +			gpio-hog;
> +			gpios = <5 GPIO_ACTIVE_HIGH>;
> +			output-low;	/* Connect WL1837 */
> +			line-name = "SD WiFi mux";
> +		};
> +
>  		hub_pwen {
>  			gpio-hog;
>  			gpios = <6 GPIO_ACTIVE_HIGH>;
> @@ -254,6 +273,12 @@
>  		function = "scif1";
>  	};
>  
> +	sdhi3_pins: sdhi3 {
> +		groups = "sdhi3_data4", "sdhi3_ctrl";
> +		function = "sdhi3";
> +		power-source = <3300>;
> +	};
> +
>  	usb0_pins: usb0 {
>  		groups = "usb0";
>  		function = "usb0";
> @@ -273,6 +298,30 @@
>  	status = "okay";
>  };
>  
> +&sdhi3 {
> +	pinctrl-0 = <&sdhi3_pins>;
> +	pinctrl-names = "default";
> +
> +	vmmc-supply = <&wlan_en>;
> +	vqmmc-supply = <&wlan_en>;
> +	bus-width = <4>;
> +	no-1-8-v;
> +	non-removable;
> +	cap-power-off-card;
> +	keep-power-in-suspend;
> +	max-frequency = <26000000>;
> +	status = "okay";
> +
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +	wlcore: wlcore@2 {
> +		compatible = "ti,wl1837";
> +		reg = <2>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
> +	};
> +};
> +
>  &usb2_phy0 {
>  	pinctrl-0 = <&usb0_pins>;
>  	pinctrl-names = "default";
> -- 
> 2.7.4
> 

-- 
Best regards,
Eugeniu.