Message-ID: <20150205192533.GE20735@leverpostej>
Date:	Thu, 5 Feb 2015 19:25:33 +0000
From:	Mark Rutland <mark.rutland@....com>
To:	Bintian Wang <bintian.wang@...wei.com>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
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Subject: Re: [PATCH 2/3] clk: hi6220: Clock driver support for Hisilicon
 hi6220 SoC

On Thu, Feb 05, 2015 at 09:24:36AM +0000, Bintian Wang wrote:
> Add clock drivers for hi6220 SoC, this driver controls the SoC
> registers to supply different clocks to different IPs in the SoC.
> 
> We add one divider clock for hi6220 because the divider in hi6220
> also has a mask bit but it doesnot obey the rule defined by flag
> "CLK_DIVIDER_HIWORD_MASK", we can not get index of the mask bit by
> left shift fixed bits (e.g. 16 bits), so we add this divider clock
> to handle it.
> 
> This patch also enables this clock driver for ARCH_HISI and document
> devicetree bindings.
> 
> Signed-off-by: Bintian Wang <bintian.wang@...wei.com>
> Reviewed-by: Haojian Zhuang <haojian.zhuang@...aro.org>
> Reviewed-by: Zhangfei Gao <zhangfei.gao@...aro.org>
> ---
>  .../devicetree/bindings/clock/hi6220-clock.txt     |   30 +++
>  arch/arm64/Kconfig                                 |    1 +
>  drivers/clk/Kconfig                                |    2 +
>  drivers/clk/Makefile                               |    4 +-
>  drivers/clk/hisilicon/Kconfig                      |    5 +
>  drivers/clk/hisilicon/Makefile                     |    1 +
>  drivers/clk/hisilicon/clk-hi6220.c                 |  284 ++++++++++++++++++++
>  drivers/clk/hisilicon/clk.c                        |   29 ++
>  drivers/clk/hisilicon/clk.h                        |   17 ++
>  drivers/clk/hisilicon/clkdivider-hi6220.c          |  273 +++++++++++++++++++
>  include/dt-bindings/clock/hi6220-clock.h           |  172 ++++++++++++
>  11 files changed, 815 insertions(+), 3 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/clock/hi6220-clock.txt
>  create mode 100644 drivers/clk/hisilicon/Kconfig
>  create mode 100644 drivers/clk/hisilicon/clk-hi6220.c
>  create mode 100644 drivers/clk/hisilicon/clkdivider-hi6220.c
>  create mode 100644 include/dt-bindings/clock/hi6220-clock.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/hi6220-clock.txt b/Documentation/devicetree/bindings/clock/hi6220-clock.txt
> new file mode 100644
> index 0000000..a3ddda1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/hi6220-clock.txt
> @@ -0,0 +1,30 @@
> +* Hisilicon Hi6220 Clock Controller
> +
> +The hi6220 clock controller generates and supplies clock to various
> +controllers within the hi6220 SoC.
> +
> +Required Properties:
> +
> +- compatible: should be one of the following:
> +  - "hisilicon,hi6220-clock-ao" - controller for those clocks under SoC
> +     power always on(AO) domain, it is the sub node of SoC power AO
> +     controller in dts file.
> +  - "hisilicon,hi6220-clock-sys" - controller for those clocks under SoC
> +     system control domain, it is the sub node of SoC system controller
> +     in dts file.
> +  - "hisilicon,hi6220-clock-media" - controller for those clocks under
> +     SoC media control domain, it is the sub node of SoC media controller
> +     in dts file.
> +  - "hisilicon,hi6220-clock-power" - controller for those clocks under
> +     SoC power control domain, it is the sub node of SoC power controller
> +     in dts file.

These all refer to things which aren't documented (yet).

Please sort out your patches so that any documentation you depend on
comes earlier.

Please also separate documentation from code. Note that dt includes are
_bindings_ and should be added with the relevant documentation.

Thanks,
Mark.
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