linux-kernel - Re: [PATCH V4 3/3] dt-bindings: geni-se: Add binding for UART pin swap

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Date:   Wed, 19 Feb 2020 18:51:35 +0530
From:   Akash Asthana <akashast@...eaurora.org>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     robh+dt@...nel.org, agross@...nel.org, mark.rutland@....com,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, mgautam@...eaurora.org,
        rojay@...eaurora.org, skakit@...eaurora.org, swboyd@...omium.org
Subject: Re: [PATCH V4 3/3] dt-bindings: geni-se: Add binding for UART pin
 swap

Hi Matthias,

On 2/19/2020 12:37 AM, Matthias Kaehlcke wrote:
> Hi Akash,
>
> I didn't see a patch that implements the binding, did you post it?

We haven't posted any update on patch@ 
https://patchwork.kernel.org/cover/11313817/

[tty: serial: qcom_geni_serial: Configure UART_IO_MACRO_CTRL register]. 
We will spin it ASAP.

>
>
> On Mon, Feb 17, 2020 at 03:06:52PM +0530, Akash Asthana wrote:
>> Add documentation to support RX/TX/CTS/RTS pin swap in HW.
>>
>> Signed-off-by: Akash Asthana <akashast@...eaurora.org>
>> ---
>>   Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml | 9 +++++++++
>>   1 file changed, 9 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml
>> index 11530df..7e4b9af 100644
>> --- a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml
>> +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml
>> @@ -165,6 +165,15 @@ patternProperties:
>>             - description: UART core irq
>>             - description: Wakeup irq (RX GPIO)
>>   
>> +      rx-tx-swap:
>> +        description: RX and TX pins are swap.
> s/swap/swapped/
Ok
>
>> +
>> +      cts-rts-swap:
>> +        description: CTS and RTS pins are swap.
> s/swap/swapped/
Ok
>
>> +
>> +      rx-tx-cts-rts-swap:
>> +        description: RX-TX and CTS-RTS both pairs are swap.
> I don't think this option adds much value, if both pairs are swapped
> the above two properties can be set.

Yeah ok, It is possible to derive value for rx-tx-cts-rts if above 2 
properties are set.

>
>> +
>>       required:
>>         - compatible
>>         - interrupts
>> -- 
>> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,\na Linux Foundation Collaborative Project

Thanks for reviewing,


Regards,

Akash

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,\na Linux Foundation Collaborative Project