linux-kernel - Re: [PATCH v2] i2c: hibvt: add Hisilicon BVT I2C controller driver

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Date:	Sat, 16 Jul 2016 15:15:55 -0500
From:	Rob Herring <robh@...nel.org>
To:	Pan Wen <wenpan@...ilicon.com>
Cc:	wsa@...-dreams.de, mark.rutland@....com, linux-i2c@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	howell.yang@...ilicon.com, xuejiancheng@...ilicon.com
Subject: Re: [PATCH v2] i2c: hibvt: add Hisilicon BVT I2C controller driver

On Tue, Jul 12, 2016 at 05:40:48PM +0800, Pan Wen wrote:
> add Hisilicon BVT I2C controller driver support.
> 
> Signed-off-by: Pan Wen <wenpan@...ilicon.com>
> ---
> change log
> v2:
> 1)Fixed a compile error.
> 2)Dropped the clock-names property.
>  .../devicetree/bindings/i2c/i2c-hibvt.txt          |  23 +
>  drivers/i2c/busses/Kconfig                         |  10 +
>  drivers/i2c/busses/Makefile                        |   1 +
>  drivers/i2c/busses/i2c-hibvt.c                     | 736 +++++++++++++++++++++
>  4 files changed, 770 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/i2c/i2c-hibvt.txt
>  create mode 100644 drivers/i2c/busses/i2c-hibvt.c
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-hibvt.txt b/Documentation/devicetree/bindings/i2c/i2c-hibvt.txt
> new file mode 100644
> index 0000000..9b88afe
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/i2c-hibvt.txt
> @@ -0,0 +1,23 @@
> +Hisilicon BVT I2C master controller
> +
> +Required properties:
> +- compatible: should be "hisilicon,hibvt-i2c".

Needs a SoC specific compatible string.

> +- reg: physical base address of the controller and length of memory mapped.
> +     region.
> +- interrupts: interrupt number to the cpu.
> +- clocks: phandles to input clocks.
> +
> +Optional properties:
> +- clock-frequency: Desired I2C bus frequency in Hz, otherwise defaults to 100000.
> +
> +Other properties:
> +see Documentation/devicetree/bindings/i2c/i2c.txt.
> +
> +Examples:
> +i2c_bus0: i2c@...10000 {
> +	compatible = "hisilicon,hibvt-i2c";
> +	reg = <0x12110000 0x100>;
> +	interrupts = <20>;
> +	clocks = <&crg_ctrl HI3516CV300_APB_CLK>;
> +	clock-frequency = <100000>;
> +};