linux-kernel - Re: [PATCH v4 2/2] dt-bindings: usb: rt1711h device tree binding document

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Message-ID: <CAFaeLdQXQnE9XpAsgOPg=D_wAqEKe4dQhtKYrS1sDT5wgqSdVw@mail.gmail.com>
Date:   Tue, 27 Mar 2018 22:30:13 +0800
From:   李書帆 <leechu729@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Greg KH <greg@...ah.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>, mark.rutland@....com,
        shufan_lee(李書帆) <shufan_lee@...htek.com>,
        cy_huang(黃啟原) <cy_huang@...htek.com>,
        Jun Li <jun.li@....com>,
        Mats Karrman <mats.dev.list@...il.com>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v4 2/2] dt-bindings: usb: rt1711h device tree binding document

Hi Rob,

2018-03-27 6:23 GMT+08:00 Rob Herring <robh@...nel.org>:
> On Tue, Mar 20, 2018 at 05:15:04PM +0800, ShuFan Lee wrote:
>> From: ShuFan Lee <shufan_lee@...htek.com>
>>
>> Add device tree binding document for Richtek RT1711H Type-C chip driver
>>
>> Signed-off-by: ShuFan Lee <shufan_lee@...htek.com>
>> ---
>>  .../devicetree/bindings/usb/richtek,rt1711h.txt    | 30 ++++++++++++++++++++++
>>  1 file changed, 30 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/usb/richtek,rt1711h.txt
>>
>>  changelogs between v2 & v3
>>  - add dt-bindings for rt1711h typec driver
>>
>> diff --git a/Documentation/devicetree/bindings/usb/richtek,rt1711h.txt b/Documentation/devicetree/bindings/usb/richtek,rt1711h.txt
>> new file mode 100644
>> index 000000000000..7da4dac78ea7
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/usb/richtek,rt1711h.txt
>> @@ -0,0 +1,30 @@
>> +Richtek RT1711H TypeC PD Controller.
>> +
>> +Required properties:
>> + - compatible : Must be "richtek,rt1711h".
>> + - reg : Must be 0x4e, it's slave address of RT1711H.
>> +
>> +Recommended properties :
>> + - interrupt-parent : the phandle for the interrupt controller that
>> +   provides interrupts for this device.
>> + - interrupts : <a b> where a is the interrupt number and b represents an
>> +   encoding of the sense and level information for the interrupt.
>> +
>> +Optional properties :
>> + - rt,intr-gpios : IRQ GPIO pin that's connected to RT1711H interrupt.
>> +   if interrupt-parent & interrupts are not defined, use this property instead.
>
> Drop this. You should simply always have interrupts property.
Does this also imply that we could always assume client->irq is ready
for request?
Therefore, there's no need to check client->irq and get gpio through
rt,intr-gpios.
>
> Rob



-- 
Best Regards,
書帆