linux-kernel - Re: [PATCH v2] ARM: dts: omap4-embt2ws: Add Bluetooth

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Date:   Wed, 4 Oct 2023 17:40:13 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Andreas Kemnade <andreas@...nade.info>
Cc:     bcousson@...libre.com, tony@...mide.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ARM: dts: omap4-embt2ws: Add Bluetooth

On 04/10/2023 17:00, Andreas Kemnade wrote:
> On Wed, 4 Oct 2023 16:53:14 +0200
> Andreas Kemnade <andreas@...nade.info> wrote:
> 
>> Hi,
>>
>> On Wed, 4 Oct 2023 09:59:59 +0200
>> Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
>>
>> [...]
>>>> diff --git a/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts b/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts
>>>> index 46a80eacf771..6a790124bcf5 100644
>>>> --- a/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts
>>>> +++ b/arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts
>>>> @@ -447,10 +447,12 @@ &uart2 {
>>>>  	interrupts-extended = <&wakeupgen GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
>>>>  			       &omap4_pmx_core OMAP4_UART2_RX>;
>>>>  
>>>> -	/*
>>>> -	 * BT + GPS in WL1283 in WG7500 requiring CLK32KAUDIO of pmic
>>>> -	 * which does not have a driver
>>>> -	 */
>>>> +	bluetooth-gnss {    
>>>
>>> If you changed the bindings, please share a link. If not, this is not
>>> currently accepted and dtbs_check should point it out.
>>>   
>>
>> according to dtbs_check:
>>
>> good:
>> - bluetooth-gnss
>> - bluettooth-gnss
>>
>> bad:
>> - bluettooth-gnnss
>> - tiwi (still there in pandaboards)
>>
> The only authoritative source I find here:
>  Documentation/devicetree/bindings/serial/serial.yaml:
> patternProperties:
>   "^bluetooth|gnss|gps|mcu$":

Yes, it's about this one.

> 
> It allows:
>  everything starting with bluetooth
>  everything containing gnss
>  everything containing gps
>  everything ending with mcu
> 
> bluetooth-gnss starts with bluetooth, so it is allowed.
> Do you have anything else forbidding bluetooth-gnss?

Heh, the pattern is wrong. This should be originally:
"^(bluetooth|gnss|gps|mcu)$":

I can fix it and also allow your use case.

Best regards,
Krzysztof