linux-kernel - Re: [PATCH v2 09/11] dt-bindings: mmc: convert amlogic,meson-gx.txt to dt-schema

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Message-ID: <9640d2a0-7245-285e-0e7a-d75bfe3f88ac@linaro.org>
Date:   Tue, 10 Jan 2023 17:40:59 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     neil.armstrong@...aro.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-watchdog@...r.kernel.org, linux-media@...r.kernel.org,
        linux-rtc@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-mmc@...r.kernel.org, linux-pci@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2 09/11] dt-bindings: mmc: convert amlogic,meson-gx.txt
 to dt-schema

On 10/01/2023 15:17, Neil Armstrong wrote:
> On 10/01/2023 11:17, Krzysztof Kozlowski wrote:
>> On 09/01/2023 13:53, Neil Armstrong wrote:
>>> Convert the Amlogic SD / eMMC controller for S905/GXBB family SoCs
>>> to dt-schema.
>>>
>>> Take in account the used variant with amlogic,meson-gx-mmc.
>>>
>>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>>> ---
>>>   .../bindings/mmc/amlogic,meson-gx-mmc.yaml         | 75 ++++++++++++++++++++++
>>>   .../devicetree/bindings/mmc/amlogic,meson-gx.txt   | 39 -----------
>>>   2 files changed, 75 insertions(+), 39 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml
>>> new file mode 100644
>>> index 000000000000..30228964fd9c
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml
>>> @@ -0,0 +1,75 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/mmc/amlogic,meson-gx-mmc.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Amlogic SD / eMMC controller for S905/GXBB family SoCs
>>> +
>>> +description:
>>> +  The MMC 5.1 compliant host controller on Amlogic provides the
>>> +  interface for SD, eMMC and SDIO devices
>>> +
>>> +maintainers:
>>> +  - Neil Armstrong <neil.armstrong@...aro.org>
>>> +
>>> +allOf:
>>> +  - $ref: mmc-controller.yaml#
>>> +
>>> +properties:
>>> +  compatible:
>>> +    oneOf:
>>> +      - enum:
>>> +          - amlogic,meson-gx-mmc
>>> +          - amlogic,meson-axg-mmc
>>> +      - items:
>>> +          - const: amlogic,meson-gx-mmc
>>
>> This does not look correct. Either gx is alone (not compatible with
>> gxbb) or it is compatible with gxbb. Cannot be both.
> 
> This ishow it's used in DT:
> 
> arch/arm64/boot/dts/amlogic/meson-gx.dtsi:                              compatible = "amlogic,meson-gx-mmc", "amlogic,meson-gxbb-mmc";
> arch/arm64/boot/dts/amlogic/meson-axg.dtsi:                             compatible = "amlogic,meson-axg-mmc";
> arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi:                      compatible = "amlogic,meson-axg-mmc";
> 
> So I'll drop the amlogic,meson-gx-mmc in the first enum to have :
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: amlogic,meson-axg-mmc
> +      - items:
> +          - const: amlogic,meson-gx-mmc
> +          - const: amlogic,meson-gxbb-mmc
> 
> It's right ?

Yes.

Best regards,
Krzysztof