Patchwork [v1,02/12] dt-bindings: phy: Add support for HiSilicon's hi3660 USB PHY

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Submitter Yu Chen
Date Dec. 3, 2018, 3:45 a.m.
Message ID <20181203034515.91412-3-chenyu56@huawei.com>
Download mbox | patch
Permalink /patch/670147/
State New
Headers show

Comments

Yu Chen - Dec. 3, 2018, 3:45 a.m.
This patch adds binding documentation for supporting the hi3660 usb
phy on boards like the HiKey960.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Binghui Wang <wangbinghui@hisilicon.com>
Signed-off-by: Yu Chen <chenyu56@huawei.com>
--
v1: Fix some format error as suggested by Rob.
--
---
 .../devicetree/bindings/phy/phy-hi3660-usb3.txt     | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
Rob Herring - Dec. 19, 2018, 2:14 p.m.
On Mon, Dec 03, 2018 at 11:45:05AM +0800, Yu Chen wrote:
> This patch adds binding documentation for supporting the hi3660 usb
> phy on boards like the HiKey960.
> 
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: John Stultz <john.stultz@linaro.org>
> Cc: Binghui Wang <wangbinghui@hisilicon.com>
> Signed-off-by: Yu Chen <chenyu56@huawei.com>
> --
> v1: Fix some format error as suggested by Rob.
> --
> ---
>  .../devicetree/bindings/phy/phy-hi3660-usb3.txt     | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
> new file mode 100644
> index 000000000000..8ea52d51aa13
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
> @@ -0,0 +1,21 @@
> +Hisilicon hi3660 usb PHY

s/usb/USB/

> +-----------------------
> +
> +Required properties:
> +- compatible: should be "hisilicon,hi3660-usb-phy"
> +- #phy-cells: must be 0
> +- hisilicon,pericrg-syscon: phandle of syscon used to control phy.
> +- hisilicon,pctrl-syscon: phandle of syscon used to control phy.
> +- hisilicon,usb3-otg-bc-syscon: phandle of syscon used to control phy.
> +- hisilicon,eye-diagram-param: parameter set for phy
> +Refer to phy/phy-bindings.txt for the generic PHY binding properties

Doesn't a phy need some clocks?

> +
> +Example:
> +	usb-phy {
> +		compatible = "hisilicon,hi3660-usb-phy";
> +		#phy-cells = <0>;
> +		hisilicon,pericrg-syscon = <&crg_ctrl>;
> +		hisilicon,pctrl-syscon = <&pctrl>;
> +		hisilicon,usb3-otg-bc-syscon = <&usb3_otg_bc>;

Is one of these the "main" registers for the phy? If so, then make this 
a child of that syscon node.

> +		hisilicon,eye-diagram-param = <0x22466e4>;
> +	};
> -- 
> 2.15.0-rc2
>
Yu Chen - Dec. 20, 2018, 1:52 a.m.
Hi,

On 2018/12/19 22:14, Rob Herring wrote:
> On Mon, Dec 03, 2018 at 11:45:05AM +0800, Yu Chen wrote:
>> This patch adds binding documentation for supporting the hi3660 usb
>> phy on boards like the HiKey960.
>>
>> Cc: Rob Herring <robh+dt@kernel.org>
>> Cc: Mark Rutland <mark.rutland@arm.com>
>> Cc: John Stultz <john.stultz@linaro.org>
>> Cc: Binghui Wang <wangbinghui@hisilicon.com>
>> Signed-off-by: Yu Chen <chenyu56@huawei.com>
>> --
>> v1: Fix some format error as suggested by Rob.
>> --
>> ---
>>  .../devicetree/bindings/phy/phy-hi3660-usb3.txt     | 21 +++++++++++++++++++++
>>  1 file changed, 21 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
>>
>> diff --git a/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
>> new file mode 100644
>> index 000000000000..8ea52d51aa13
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
>> @@ -0,0 +1,21 @@
>> +Hisilicon hi3660 usb PHY
> 
> s/usb/USB/

OK.
> 
>> +-----------------------
>> +
>> +Required properties:
>> +- compatible: should be "hisilicon,hi3660-usb-phy"
>> +- #phy-cells: must be 0
>> +- hisilicon,pericrg-syscon: phandle of syscon used to control phy.
>> +- hisilicon,pctrl-syscon: phandle of syscon used to control phy.
>> +- hisilicon,usb3-otg-bc-syscon: phandle of syscon used to control phy.
>> +- hisilicon,eye-diagram-param: parameter set for phy
>> +Refer to phy/phy-bindings.txt for the generic PHY binding properties
> 
> Doesn't a phy need some clocks?
> 
Yes, the clocks of USB phy currently is enabled by config the
pctrl-syscon registers and pericrg-syscon.
>> +
>> +Example:
>> +	usb-phy {
>> +		compatible = "hisilicon,hi3660-usb-phy";
>> +		#phy-cells = <0>;
>> +		hisilicon,pericrg-syscon = <&crg_ctrl>;
>> +		hisilicon,pctrl-syscon = <&pctrl>;
>> +		hisilicon,usb3-otg-bc-syscon = <&usb3_otg_bc>;
> 
> Is one of these the "main" registers for the phy? If so, then make this 
> a child of that syscon node.
> 
Ok, the usb3-otg-bc-syscon is the "main" registers for the phy.

>> +		hisilicon,eye-diagram-param = <0x22466e4>;
>> +	};
>> -- 
>> 2.15.0-rc2
>>
> 
> .
>

Patch

diff --git a/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
new file mode 100644
index 000000000000..8ea52d51aa13
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
@@ -0,0 +1,21 @@ 
+Hisilicon hi3660 usb PHY
+-----------------------
+
+Required properties:
+- compatible: should be "hisilicon,hi3660-usb-phy"
+- #phy-cells: must be 0
+- hisilicon,pericrg-syscon: phandle of syscon used to control phy.
+- hisilicon,pctrl-syscon: phandle of syscon used to control phy.
+- hisilicon,usb3-otg-bc-syscon: phandle of syscon used to control phy.
+- hisilicon,eye-diagram-param: parameter set for phy
+Refer to phy/phy-bindings.txt for the generic PHY binding properties
+
+Example:
+	usb-phy {
+		compatible = "hisilicon,hi3660-usb-phy";
+		#phy-cells = <0>;
+		hisilicon,pericrg-syscon = <&crg_ctrl>;
+		hisilicon,pctrl-syscon = <&pctrl>;
+		hisilicon,usb3-otg-bc-syscon = <&usb3_otg_bc>;
+		hisilicon,eye-diagram-param = <0x22466e4>;
+	};