diff mbox series

[v2,1/3] dt-bindings: mmc: Add bindings for StarFive

Message ID 20221227122227.460921-2-william.qiu@starfivetech.com
State New
Headers
Series StarFive's SDIO/eMMC driver support |

Commit Message

William Qiu Dec. 27, 2022, 12:22 p.m. UTC 
  Add documentation to describe StarFive
designware mobile storage host controller driver.

Signed-off-by: William Qiu <william.qiu@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

Comments

Krzysztof Kozlowski Dec. 27, 2022, 1:05 p.m. UTC | #1 
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@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@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
William Qiu Dec. 28, 2022, 10:40 a.m. UTC | #2 
On 2022/12/27 21:05, Krzysztof Kozlowski wrote:
> 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).
> 

Will update

>> 
>> Signed-off-by: William Qiu <william.qiu@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@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.
> 

Will update.

>> +    $ref: /schemas/types.yaml#/definitions/phandle-array
>> +    description:
>> +      arg0:arg0 is syscon.
> 
> What is syscon?
> 

Will update.

>> +      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
> 

Hi Krzysztof,

Thank you for taking time to review and provide helpful comments for this patch.
I will fix all the above issues in the next version.

Best Regards,
William Qiu

> 
> 
> Best regards,
> Krzysztof
>
diff mbox series

Patch

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@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:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description:
+      arg0:arg0 is syscon.
+      arg1:arg1 is syscon register offset, used to enable MMC function.
+      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.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+  - starfive,syscon
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    mmc@16010000 {
+        compatible = "starfive,jh7110-mmc";
+        reg = <0x16010000 0x10000>;
+        clocks = <&syscrg 91>,
+                 <&syscrg 93>;
+        clock-names = "biu","ciu";
+        resets = <&syscrg 64>;
+        reset-names = "reset";
+        interrupts = <74>;
+        fifo-depth = <32>;
+        fifo-watermark-aligned;
+        data-addr = <0>;
+        starfive,syscon = <&syscon 0x14 0x1a 0x7c000000>;
+    };