linux-kernel - Re: [PATCH v2 2/3] dt-bindings: serial: pl011: Change to reference the kernel-defined serial.yaml

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Message-ID: <7e25e190-383f-c820-47f5-54894b7e6d8a@huawei.com>
Date:   Thu, 6 May 2021 10:44:20 +0800
From:   "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To:     Rob Herring <robh@...nel.org>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-serial <linux-serial@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/3] dt-bindings: serial: pl011: Change to reference
 the kernel-defined serial.yaml



On 2021/4/30 23:21, Rob Herring wrote:
> On Thu, Apr 22, 2021 at 04:58:36PM +0800, Zhen Lei wrote:
>> The /schemas/serial.yaml from dt-schema only has the property $nodename,
>> whereas the kernel-defined /schemas/serial/serial.yaml contains more
>> useful properties, support for more complex application scenarios.
>>
>> For example:
>> 1) The property "current-speed" in fsl-lx2160a.dtsi
>> 2) The subnode "bluetooth" in hi3660-hikey960.dts
>>
>> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
>> ---
>>  Documentation/devicetree/bindings/serial/pl011.yaml | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> What about all these:

Currently, the extended attributes described in /schemas/serial/serial.yaml are
not referenced in the dts of other serial ports except pl011. So I didn't change
them. At least I run dtbs_check one by one on the ARM64 platform, no warning is
reported. Now, it seems that I was wrong, /schemas/serial/serial.yaml is applicable
to all serial ports. Even if those attributes are not currently referenced, the
reference relationship should be corrected in advance.

> 
> $ git grep 'schemas/serial.yaml'
> Documentation/devicetree/bindings/serial/8250.yaml:  - $ref: /schemas/serial.yaml#
> Documentation/devicetree/bindings/serial/brcm,bcm7271-uart.yaml:  - $ref: /schemas/serial.yaml#
> Documentation/devicetree/bindings/serial/ingenic,uart.yaml:  - $ref: /schemas/serial.yaml#
> Documentation/devicetree/bindings/serial/pl011.yaml:  - $ref: /schemas/serial.yaml#
> Documentation/devicetree/bindings/serial/qca,ar9330-uart.yaml:  - $ref: /schemas/serial.yaml#
> Documentation/devicetree/bindings/serial/samsung_uart.yaml:  - $ref: /schemas/serial.yaml#
> Documentation/devicetree/bindings/serial/sifive-serial.yaml:  - $ref: /schemas/serial.yaml#
> Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml:  - $ref: /schemas/serial.yaml#
> Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml:    $ref: /schemas/serial.yaml#
> 
> .
>