Date: Tue, 3 Feb 2015 01:10:51 +0300
From: Roman Volkov <v1ron@mail.ru>
To: Roman Volkov <v1ron@v1ros.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>,
        Grant Likely <grant.likely@linaro.org>,
        Hans de Goede <hdegoede@redhat.com>, Jiri Kosina <jkosina@suse.cz>,
        Wolfram Sang <wsa@the-dreams.de>, linux-input@vger.kernel.org,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        Tony Prisk <linux@prisktech.co.nz>
Subject: Re: [PATCH 1/5] i8042: intel-8042 DT documentation
Message-ID: <20150203011051.11999a16@v1ron-s7>
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В Tue,  3 Feb 2015 00:48:46 +0300
Roman Volkov <v1ron@v1ros.org> пишет:

> Documentation for 'intel,8042' DT compatible node.
> 
> Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
> Signed-off-by: Roman Volkov <v1ron@v1ros.org>
> ---
>  .../devicetree/bindings/input/intel-8042.txt       | 29
> ++++++++++++++++++++++ 1 file changed, 29 insertions(+)
>  create mode 100644
> Documentation/devicetree/bindings/input/intel-8042.txt
> 
> diff --git a/Documentation/devicetree/bindings/input/intel-8042.txt
> b/Documentation/devicetree/bindings/input/intel-8042.txt new file
> mode 100644 index 0000000..2aea7ec
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/intel-8042.txt
> @@ -0,0 +1,29 @@
> +* Intel 8042 Keyboard Controller
> +
> +Required properties:
> +- compatible: should be "intel,8042"
> +- regs: memory for keyboard controller
> +- interrupts: two interrupts should be specified (keyboard and aux)
> +- command-reg: offset in memory for command register
> +- status-reg: offset in memory for status register
> +- data-reg: offset in memory for data register
> +
> +Optional properties:
> +- init-reset: Controller should be reset on init and cleanup
> +
> +Optional Linux-specific properties:
> +- linux,kbd_phys_desc: defaults to i8042/serio0
> +- linux,aux_phys_desc: defaults to i8042/serio1
> +- linux,mux_phys_desc: defaults to i8042/serio%d
> +
> +
> +Example:
> +	keyboard@d8008800 {
> +		compatible = "intel,8042";
> +		reg = <0xd8008800 0x100>;
> +		interrupts = <23 4>;
> +		command-reg = <0x04>;
> +		status-reg = <0x04>;
> +		data-reg = <0x00>;
> +		mux-ports = <2>;
> +	};

Hi,

This patch set is to enable the Open Firmware Device Tree support for
the i8042 controller. Yes, some ARM SoC boards are still using i8042. As
an example, it is the vt8500 architecture.

I've tested this on my wm8505 machine in both configurations: as a
module and built-in. Also a modification of this driver is available
at https://github.com/linux-wmt/linux-vtwm. This should not affect x86
and similar architectures without the DT enabled in the config.

Regards,
Roman.
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