Re: [PATCH v5 02/13] [media] exynos5-fimc-is: Add Exynos5 FIMC-IS device tree bindings documentation

[Sylwester Nawrocki <sylvester.nawrocki@gmail.com>]

W dniu 2013-08-14 06:46, Arun Kumar K pisze:
> The patch adds the DT binding documentation for Samsung
> Exynos5 SoC series imaging subsystem (FIMC-IS).
>
> Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
> ---
>   .../devicetree/bindings/media/exynos5-fimc-is.txt  |   47 ++++++++++++++++++++
>   1 file changed, 47 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/media/exynos5-fimc-is.txt
>
> diff --git a/Documentation/devicetree/bindings/media/exynos5-fimc-is.txt b/Documentation/devicetree/bindings/media/exynos5-fimc-is.txt
> new file mode 100644
> index 0000000..bfd36df
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/exynos5-fimc-is.txt
> @@ -0,0 +1,47 @@
> +Samsung EXYNOS5 SoC series Imaging Subsystem (FIMC-IS)
> +------------------------------------------------------
> +
> +The camera subsystem on Samsung Exynos5 SoC has some changes relative
> +to previous SoC versions. Exynos5 has almost similar MIPI-CSIS and
> +FIMC-LITE IPs but has a much improved version of FIMC-IS which can
> +handle sensor controls and camera post-processing operations. The
> +Exynos5 FIMC-IS has a dedicated ARM Cortex A5 processor, many
> +post-processing blocks (ISP, DRC, FD, ODC, DIS, 3DNR) and two
> +dedicated scalers (SCC and SCP).
> +
> +fimc-is node
> +------------
> +
> +Required properties:
> +
> +- compatible        : must be "samsung,exynos5250-fimc-is"
> +- reg               : physical base address and size of the memory mapped
> +                      registers
> +- interrupt-parent  : parent interrupt controller
> +- interrupts        : fimc-is interrupt to the parent combiner

Is it really only one interrupt or two as in case of Exynos4x12 ?
Also it's probably more appropriate to say "interrupt controller"
instead of "combiner", not including details of the the FIMC-IS external 
interrupt controller in this binding.

> +- clocks            : list of clock specifiers, corresponding to entries in
> +                      clock-names property;
> +- clock-names       : must contain "isp", "mcu_isp", "isp_div0", "isp_div1",
> +                      "isp_divmpwm", "mcu_isp_div0", "mcu_isp_div1" entries,
> +                      matching entries in the clocks property.
> +- pmu               : phandle to the fimc-is pmu node describing the register
> +                      base and size for FIMC-IS PMU.

This property needs to be prefixed with "samsung,".

> +
> +i2c-isp (ISP I2C bus controller) nodes
> +------------------------------------------
> +
> +Required properties:
> +
> +- compatible	: should be "samsung,exynos4212-i2c-isp" for Exynos4212,
> +		  Exynos4412 and Exynos5250 SoCs;
> +- reg		: physical base address and length of the registers set;
> +- clocks	: must contain gate clock specifier for this controller;
> +- clock-names	: must contain "i2c_isp" entry.
> +
> +For the i2c-isp node, it is required to specify a pinctrl state named "default",
> +according to the pinctrl bindings defined in ../pinctrl/pinctrl-bindings.txt.
> +
> +Device tree nodes of the image sensors' controlled directly by the FIMC-IS

nit: As pointed out already there is no need for the apostrophe.

> +firmware must be child nodes of their corresponding ISP I2C bus controller node.
> +The data link of these image sensors must be specified using the common video
> +interfaces bindings, defined in video-interfaces.txt.

--
Thanks,
Sylwester