lkml.org 
[lkml]   [2020]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v3 2/3] dt-bindings: usb: cdns,usb3: Add cdns,phyrst-a-enable property
From
Date
Hi Sergei,

On 15/09/2020 19:15, Sergei Shtylyov wrote:
> Hello!
>
> On 9/15/20 2:45 PM, Roger Quadros wrote:
>
>> Controller version 0x0002450D has USB2 PHY RX sensitivity issues
>> that needs to be worked around by enabling phyrst-a-enable bit
>> in PHYRST_CFG register.
>>
>> There is no way to know controller version before device controller
>> is started and the workaround needs to be applied for both host and
>> device modes, so we add this DT property.
>>
>> Signed-off-by: Roger Quadros <rogerq@ti.com>
>> Acked-by: Rob Herring <robh@kernel.org>
>> ---
>> Documentation/devicetree/bindings/usb/cdns,usb3.yaml | 4 ++++
>> 1 file changed, 4 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
>> index 9b14c8443d39..ac20b98e9910 100644
>> --- a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
>> +++ b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
>> @@ -61,6 +61,10 @@ properties:
>> buffers expressed in KB
>> $ref: /schemas/types.yaml#/definitions/uint32
>>
>> + cdns,phyrst-a-enable:
>> + description: Enable resetting of PHY if Rx fail is detected
>
> Failure?

Actually the IP manual says "Reset PHY if Rx fail is detected".

So let's leave it like that.
>
> [...]
>
> MBR, Sergei
>

cheers,
-roger
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

\
 
 \ /
  Last update: 2020-09-24 11:52    [W:0.058 / U:0.548 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site