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Date:   Mon, 12 Dec 2022 10:50:09 +0900
From:   Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
To:     Rob Herring <robh@...nel.org>, Ard Biesheuvel <ardb@...nel.org>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Masahisa Kojima <masahisa.kojima@...aro.org>
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: mmc: Convert Fujitsu SDHCI to DT schema

Hi Rob,

On 2022/12/10 3:44, Ard Biesheuvel wrote:
> cc Jassi and Masahisa
> 
> On Fri, 9 Dec 2022 at 19:42, Rob Herring <robh@...nel.org> wrote:
>>
>> On Fri, Dec 9, 2022 at 11:16 AM Rob Herring <robh@...nel.org> wrote:
>>>
>>> Convert the Fujitsu SDHCI binding to DT schema format.
>>>
>>> The interrupts were not documented. The driver only uses the first
>>> interrupt, but the DT and example have 2 interrupts. The 2nd one is
>>> unknown. "dma-coherent" was also not documented, but is used.
>>>
>>> The "socionext,synquacer-sdhci" compatible was not documented, but it is
>>> compatible with "fujitsu,mb86s70-sdhci-3.0.yaml" and is in use (in
>>> u-boot Synquacer dts).
>>>
>>> Signed-off-by: Rob Herring <robh@...nel.org>
>>> ---
>>>   .../mmc/fujitsu,mb86s70-sdhci-3.0.yaml        | 67 +++++++++++++++++++
>>>   .../devicetree/bindings/mmc/sdhci-fujitsu.txt | 32 ---------
>>>   2 files changed, 67 insertions(+), 32 deletions(-)
>>>   create mode 100644 Documentation/devicetree/bindings/mmc/fujitsu,mb86s70-sdhci-3.0.yaml
>>>   delete mode 100644 Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
>>>
>>> diff --git a/Documentation/devicetree/bindings/mmc/fujitsu,mb86s70-sdhci-3.0.yaml b/Documentation/devicetree/bindings/mmc/fujitsu,mb86s70-sdhci-3.0.yaml
>>> new file mode 100644
>>> index 000000000000..0218a6ce4b2f
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/mmc/fujitsu,mb86s70-sdhci-3.0.yaml
>>> @@ -0,0 +1,67 @@
>>> +# SPDX-License-Identifier: GPL-2.0-only
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/mmc/fujitsu,mb86s70-sdhci-3.0.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Fujitsu SDHCI controller
>>> +
>>> +maintainers:
>>> +  - Vincent Yang <Vincent.Yang@...fujitsu.com>
>>
>> Bounces. Any other volunteers?
>>
>>> +
>>> +allOf:
>>> +  - $ref: mmc-controller.yaml#
>>> +
>>> +properties:
>>> +  compatible:
>>> +    oneOf:
>>> +      - items:
>>> +          - const: socionext,synquacer-sdhci
>>> +          - const: fujitsu,mb86s70-sdhci-3.0
>>> +      - const: fujitsu,mb86s70-sdhci-3.0
>>> +
>>> +  reg:
>>> +    maxItems: 1
>>> +
>>> +  clocks:
>>> +    items:
>>> +      - description: Core clock
>>> +      - description: Interface clock
>>> +
>>> +  clock-names:
>>> +    items:
>>> +      - const: core
>>> +      - const: iface
>>> +
>>> +  dma-coherent: true
>>> +
>>> +  interrupts:
>>> +    maxItems: 2
>>> +
>>> +  fujitsu,cmd-dat-delay-select:
>>> +    type: boolean
>>> +    description: Indicating that the host requires the CMD_DAT_DELAY control
>>> +      to be enabled.
>>> +
>>> +required:
>>> +  - compatible
>>> +  - reg
>>> +  - clocks
>>> +  - clock-names
>>> +  - interrupts
>>> +
>>> +unevaluatedProperties: false
>>> +
>>> +examples:
>>> +  - |
>>> +    mmc@...00000 {
>>> +        compatible = "fujitsu,mb86s70-sdhci-3.0";
>>> +        reg = <0x36600000 0x1000>;
>>> +        interrupts = <0 172 0x4>,
>>> +               <0 173 0x4>;
>>> +        bus-width = <4>;
>>> +        vqmmc-supply = <&vccq_sdhci1>;
>>> +        clocks = <&clock 2 2 0>, <&clock 2 3 0>;
>>> +        clock-names = "core", "iface";
>>> +    };
>>> +...
>>> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt b/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
>>> deleted file mode 100644
>>> index 3ee9263adf73..000000000000
>>> --- a/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
>>> +++ /dev/null
>>> @@ -1,32 +0,0 @@
>>> -* Fujitsu SDHCI controller
>>> -
>>> -This file documents differences between the core properties in mmc.txt
>>> -and the properties used by the sdhci_f_sdh30 driver.
>>> -
>>> -Required properties:
>>> -- compatible: "fujitsu,mb86s70-sdhci-3.0"
>>> -- clocks: Must contain an entry for each entry in clock-names. It is a
>>> -  list of phandles and clock-specifier pairs.
>>> -  See ../clocks/clock-bindings.txt for details.
>>> -- clock-names: Should contain the following two entries:
>>> -       "iface" - clock used for sdhci interface
>>> -       "core"  - core clock for sdhci controller
>>> -
>>> -Optional properties:
>>> -- vqmmc-supply: phandle to the regulator device tree node, mentioned
>>> -  as the VCCQ/VDD_IO supply in the eMMC/SD specs.
>>> -- fujitsu,cmd-dat-delay-select: boolean property indicating that this host
>>> -  requires the CMD_DAT_DELAY control to be enabled.
>>> -
>>> -Example:
>>> -
>>> -       sdhci1: mmc@...00000 {
>>> -               compatible = "fujitsu,mb86s70-sdhci-3.0";
>>> -               reg = <0 0x36600000 0x1000>;
>>> -               interrupts = <0 172 0x4>,
>>> -                            <0 173 0x4>;
>>> -               bus-width = <4>;
>>> -               vqmmc-supply = <&vccq_sdhci1>;
>>> -               clocks = <&clock 2 2 0>, <&clock 2 3 0>;
>>> -               clock-names = "iface", "core";
>>> -       };
>>> --
>>> 2.35.1
>>>

I converted this dt-bindings as follows.

- [PATCH v2 1/6] dt-bindings: mmc: Convert sdhci-fujitsu to JSON schema
   https://marc.info/?l=linux-mmc&m=166815383930945

- [PATCH v2 3/6] dt-bindings: sdhci-fujitsu: Add compatible string for F_SDH30_E51
   https://marc.info/?l=linux-mmc&m=166815384730959

And this series has already merged by Ulf.
https://marc.info/?l=linux-mmc&m=166861511322498

Could you check it and update some diffs?

Thank you,

---
Best Regards
Kunihiko Hayashi

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