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Message-ID: <2037156d-5113-4b96-8f86-c8ef1c1fdf96@linaro.org>
Date:   Tue, 10 Jan 2023 15:17:34 +0100
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...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 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 ?

Neil

> 
> 
> 
> Best regards,
> Krzysztof
> 

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