Re: [PATCH v1 1/3] dt-bindings: mmc: Add bindings for StarFive

William Qiu
2022-12-08T08:47:29Z

On 2022/12/7 23:13, Krzysztof Kozlowski wrote:
> On 07/12/2022 14:17, William Qiu wrote:
>> Add documentation to describe StarFive
>> designware mobile storage host controller driver.
>>
>> Signed-off-by: William Qiu <william.qiu@starfivetech.com>
>> ---
>> .../bindings/mmc/starfive,jh7110-sdio.yaml | 71 +++++++++++++++++++
>> 1 file changed, 71 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/mmc/starfive,jh7110-sdio.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mmc/starfive,jh7110-sdio.yaml b/Documentation/devicetree/bindings/mmc/starfive,jh7110-sdio.yaml
>> new file mode 100644
>> index 000000000000..4f27ef3cf4f3
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mmc/starfive,jh7110-sdio.yaml
>> @@ -0,0 +1,71 @@
>> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mmc/starfive,jh7110-sdio.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: StarFive Designware Mobile Storage Host Controller
>> +
>> +description:
>> + StarFive uses the Synopsys designware mobile storage host controller
>> + to interface a SoC with storage medium such as eMMC or SD/MMC cards.
>> +
>> +allOf:
>> + - $ref: "synopsys-dw-mshc-common.yaml#"
>
> Drop quotes
>

Will fix.

>> +
>> +maintainers:
>> + - William Qiu <william.qiu@starfivetech.com>
>> +
>> +properties:
>> + compatible:
>> + const: starfive,jh7110-sdio
>
> Why do you call it sdio if the interface is for mmc as well?
>

Will update compatible.

>> +
>> + reg:
>> + maxItems: 1
>> +
>> + clocks:
>> + minItems: 1
>> + items:
>> + - description: biu clock
>> + - description: ciu clock
>
> I don't think the card interface clock is optional... are you sure you
> have designs working without it? No clock line at all getting to the memory?
>

Will fix.

>> +
>> + clock-names:
>> + minItems: 1
>> + items:
>> + - const: biu
>> + - const: ciu
>> +
>> + interrupts:
>> + maxItems: 1
>> +
>> + starfive,sys-syscon:
>> + $ref: /schemas/types.yaml#/definitions/uint32-array
>> + description:
>> + The desired number of times that the host execute tuning when needed.
>
> That's not matching the property name. Missing number of items... this
> is anyway confusing. Why number of tuning tries is a property of DT?
>

Will update the description.

>> +
>> +required:
>> + - compatible
>> + - reg
>> + - clocks
>> + - clock-names
>> + - interrupts
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> + - |
>> + #include <dt-bindings/clock/starfive-jh7110.h>
>> + #include <dt-bindings/reset/starfive-jh7110.h>
>> + mmc@16010000 {
>> + compatible = "starfive,jh7110-sdio";
>
> Use 4 spaces for example indentation.
>

I'll fix the indentation.

>> + reg = <0x16010000 0x10000>;
>> + clocks = <&syscrg JH7110_SYSCLK_SDIO0_AHB>,
>> + <&syscrg JH7110_SYSCLK_SDIO0_SDCARD>;
>
> Align with previous <
>

I will fix.

Thank you for taking time to review and provide helpful comments for this patch.

Best regards,
William Qiu

> Best regards,
> Krzysztof