linux-kernel - Re: [PATCH v3 5/5] usb: dwc3: rockchip: add devicetree bindings documentation

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Date:	Wed, 01 Jun 2016 17:03:13 +0800
From:	William Wu <william.wu@...k-chips.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	gregkh@...uxfoundation.org, balbi@...nel.org, heiko@...ech.de
CC:	linux-rockchip@...ts.infradead.org, briannorris@...gle.com,
	dianders@...gle.com, kever.yang@...k-chips.com,
	huangtao@...k-chips.com, frank.wang@...k-chips.com,
	eddie.cai@...k-chips.com, John.Youn@...opsys.com,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v3 5/5] usb: dwc3: rockchip: add devicetree bindings documentation

Dear Sergei,

On 05/27/2016 07:54 PM, Sergei Shtylyov wrote:
> Hello.
>
> On 5/27/2016 2:31 PM, William Wu wrote:
>
>> This patch documents the device tree documentation required for
>
>    Documents the documentation? :-)
Ah, my commit log seems a little weird. I'll corrcet it next patch. 
Thanks.:-)
>
>> Rockchip USB3.0 core wrapper consist of USB3.0 IP from Synopsys.
>
>    Consisting?
I'll correct it next patch. Thanks again.
>
>> It could operate in device mode (SS, HS, FS) and host
>> mode (SS, HS, FS, LS).
>>
>> Signed-off-by: William Wu <william.wu@...k-chips.com>
>> ---
>> Changes in v3:
>> - add dwc3 address (Felipe)
>>
>> Changes in v2:
>> - add rockchip,dwc3.txt to Documentation/devicetree/bindings/ 
>> (Felipe, Brian)
>>
>>
>>  .../devicetree/bindings/usb/rockchip,dwc3.txt      | 45 
>> ++++++++++++++++++++++
>>  1 file changed, 45 insertions(+)
>>  create mode 100644 
>> Documentation/devicetree/bindings/usb/rockchip,dwc3.txt
>>
>> diff --git a/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt 
>> b/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt
>> new file mode 100644
>> index 0000000..0bb52fe
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt
>> @@ -0,0 +1,45 @@
>> +Rockchip SuperSpeed DWC3 USB SoC controller
>> +
>> +Required properties:
>> +- compatible:    should contain "rockchip,dwc3"
>> +- clocks:        A list of phandle + clock-specifier pairs for the
>> +                clocks listed in clock-names
>> +- clock-names:    Should contain the following:
>> +  "clk_usb3otg0_ref"    Controller reference clk
>> +  "clk_usb3otg0_suspend"Controller suspend clk, can use 24 MHz or 32 
>> KHz
>> +  "aclk_usb3"        Master/Core clock, have to be >= 62.5 MHz for 
>> SS operation
>> +
>> +
>> +Optional clocks:
>> +  "aclk_usb3otg0"    Aclk for specific usb controller clock.
>> +  "aclk_usb3_rksoc_axi_perf"  USB AXI perf clock.  Not present on 
>> all platforms.
>> +  "aclk_usb3_grf"    USB grf clock.  Not present on all platforms.
>> +
>> +Required child node:
>> +A child node must exist to represent the core DWC3 IP block. The 
>> name of
>> +the node is not important. The content of the node is defined in 
>> dwc3.txt.
>> +
>> +Phy documentation is provided in the following places:
>
>    PHY.
Actually, our phy driver and document is not ready yet. I just add it 
here earlier. Add after we upload the phy driver and document, we can 
fix the PHY here.
Is that OK?
>
> [...]
>
> MBR, Sergei
>
>
>
>