[PATCH v2 1/3] dt-bindings: mmc: Add bindings for StarFive
Krzysztof Kozlowski
krzysztof.kozlowski at linaro.org
Tue Dec 27 05:05:03 PST 2022
On 27/12/2022 13:22, William Qiu wrote:
> Add documentation to describe StarFive
> designware mobile storage host controller driver.
Please wrap commit message according to Linux coding style / submission
process (neither too early nor over the limit):
https://elixir.bootlin.com/linux/v5.18-rc4/source/Documentation/process/submitting-patches.rst#L586
The subject is a bit redundant and not precise. No need to mention
"bindings" twice but "StarFive" is really too generic. Do you add now
all possible devices from StarFive? I see only one. Rephrase (use git
log to find examples).
>
> Signed-off-by: William Qiu <william.qiu at starfivetech.com>
> ---
> .../bindings/mmc/starfive,jh7110-mmc.yaml | 72 +++++++++++++++++++
> 1 file changed, 72 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mmc/starfive,jh7110-mmc.yaml
>
> diff --git a/Documentation/devicetree/bindings/mmc/starfive,jh7110-mmc.yaml b/Documentation/devicetree/bindings/mmc/starfive,jh7110-mmc.yaml
> new file mode 100644
> index 000000000000..430dd5f24933
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/starfive,jh7110-mmc.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mmc/starfive,jh7110-mmc.yaml#
> +$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#
> +
> +maintainers:
> + - William Qiu <william.qiu at starfivetech.com>
> +
> +properties:
> + compatible:
> + const: starfive,jh7110-mmc
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: biu clock
> + - description: ciu clock
> +
> + clock-names:
> + items:
> + - const: biu
> + - const: ciu
> +
> + interrupts:
> + maxItems: 1
> +
> + starfive,syscon:
Name is not specific enough. What is syscon? Any syscon? This needs to
be specific.
> + $ref: /schemas/types.yaml#/definitions/phandle-array
> + description:
> + arg0:arg0 is syscon.
What is syscon?
> + arg1:arg1 is syscon register offset, used to enable MMC function.
Describe the argument, not what it is used for, e.g. "offset of XXX YYY ZZZ"
> + arg2:arg2 is used to enable the register shift of the MMC function.
> + arg3:arg3 is used to enable the register mask of the MMC function.
That's not how the phandle array is described. Instead:
https://elixir.bootlin.com/linux/v5.18-rc1/source/Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml#L42
Best regards,
Krzysztof
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