linux-kernel - Re: [PATCH] wlcore: spi: add wl18xx support

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Message-ID: <87shyx38tz.fsf@purkki.adurom.net>
Date:	Thu, 07 Apr 2016 15:24:40 +0300
From:	Kalle Valo <kvalo@...eaurora.org>
To:	Eyal Reizer <eyalreizer@...il.com>
Cc:	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, Eyal Reizer <eyalr@...com>,
	devicetree@...r.kernel.org
Subject: Re: [PATCH] wlcore: spi: add wl18xx support

Eyal Reizer <eyalreizer@...il.com> writes:

> Add support for using with both wl12xx and wl18xx.
>
> - all wilink family needs special init command for entering wspi mode.
>   extra clock cycles should be sent after the spi init command while the
>   cs pin is high.
> - switch to controling the cs pin from the spi driver for achieveing the
>   above.
> - the selected cs gpio is read from the spi device-tree node using the
>   cs-gpios field and setup as a gpio.
> - See the example below for specifying the cs gpio using the cs-gpios entry
>
> &spi0	{
>  	status = "okay";
> 	pinctrl-names = "default";
> 	pinctrl-0 = <&spi0_pins>;
> 	cs-gpios = <&gpio0 5 0>;
> 	#address-cells = <1>;
> 	#size-cells = <0>;
>  	wlcore: wlcore@0 {
> 		compatible = "ti,wl1835";
> 		vwlan-supply = <&wlan_en_reg>;
> 		spi-max-frequency = <48000000>;
> 		reg = <0>;      /* chip select 0 on spi0, ie spi0.0 */
> 		interrupt-parent = <&gpio0>;
> 		interrupts = <27 IRQ_TYPE_EDGE_RISING>;
>  	};
> };
>
> Signed-off-by: Eyal Reizer <eyalr@...com>

[...]

>  static const struct of_device_id wlcore_spi_of_match_table[] = {
> -	{ .compatible = "ti,wl1271" },
> +	{ .compatible = "ti,wl1271", .data = &wl12xx_data},
> +	{ .compatible = "ti,wl1273", .data = &wl12xx_data},
> +	{ .compatible = "ti,wl1281", .data = &wl12xx_data},
> +	{ .compatible = "ti,wl1283", .data = &wl12xx_data},
> +	{ .compatible = "ti,wl1801", .data = &wl18xx_data},
> +	{ .compatible = "ti,wl1805", .data = &wl18xx_data},
> +	{ .compatible = "ti,wl1807", .data = &wl18xx_data},
> +	{ .compatible = "ti,wl1831", .data = &wl18xx_data},
> +	{ .compatible = "ti,wl1835", .data = &wl18xx_data},
> +	{ .compatible = "ti,wl1837", .data = &wl18xx_data},
>  	{ }

Shouldn't you also update bindings/net/wireless/ti,wlcore,spi.txt? Now
it only mentions about ti,wl1271 and not anything about the rest.

Adding devicetree list for further comments.

-- 
Kalle Valo