diff mbox series

[01/23] dt-bindings: clock: Document FSD CMU bindings

Message ID 20220113121143.22280-2-alim.akhtar@samsung.com (mailing list archive)
State New, archived
Headers show
Series Add support for Tesla Full Self-Driving (FSD) SoC | expand

Commit Message

Alim Akhtar Jan. 13, 2022, 12:11 p.m. UTC 
Add dt-schema documentation for Tesla FSD SoC clock controller.

Cc: linux-fsd@tesla.com
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
---
 .../bindings/clock/tesla,fsd-clock.yaml       | 212 ++++++++++++++++++
 1 file changed, 212 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml

Comments

Krzysztof Kozlowski Jan. 13, 2022, 12:40 p.m. UTC | #1 
On 13/01/2022 13:11, Alim Akhtar wrote:
> Add dt-schema documentation for Tesla FSD SoC clock controller.
> 
> Cc: linux-fsd@tesla.com
> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
> ---
>  .../bindings/clock/tesla,fsd-clock.yaml       | 212 ++++++++++++++++++
>  1 file changed, 212 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
> 
> diff --git a/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml b/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
> new file mode 100644
> index 000000000000..58f341e5004d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
> @@ -0,0 +1,212 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/tesla,fsd-clock.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Tesla FSD (Full Self-Driving) SoC clock controller
> +
> +maintainers:
> +  - Alim Akhtar <alim.akhtar@samsung.com>
> +  - linux-fsd@tesla.com
> +
> +description: |
> +  FSD clock controller consist of several clock management unit
> +  (CMU), which generates clocks for various inteernal SoC blocks.
> +  The root clock comes from external OSC clock (24 MHz).
> +
> +  All available clocks are defined as preprocessor macros in
> +  'dt-bindings/clock/fsd-clk.h' header.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - tesla,fsd-clock-cmu
> +      - tesla,fsd-clock-imem
> +      - tesla,fsd-clock-peric
> +      - tesla,fsd-clock-fsys0
> +      - tesla,fsd-clock-fsys1
> +      - tesla,fsd-clock-mfc
> +      - tesla,fsd-clock-cam_csi
> +
> +  clocks:
> +    minItems: 1
> +    maxItems: 6
> +
> +  clock-names:
> +    minItems: 1
> +    maxItems: 6
> +
> +  "#clock-cells":
> +    const: 1
> +
> +  reg:
> +    maxItems: 1
> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: tesla,fsd-clock-cmu
> +

Nitpick: Drop the white-spaces between if-then. It's easier to spot the
if-blocks if they are together.

> +    then:
> +      properties:
> +        clocks:
> +          items:
> +            - description: External reference clock (24 MHz)
> +

Drop this whitespace as well.

Rest looks good to me, except the discussion about the compatible.


Best regards,
Krzysztof
Rob Herring (Arm) Jan. 13, 2022, 11:33 p.m. UTC | #2 
On Thu, 13 Jan 2022 17:41:21 +0530, Alim Akhtar wrote:
> Add dt-schema documentation for Tesla FSD SoC clock controller.
> 
> Cc: linux-fsd@tesla.com
> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
> ---
>  .../bindings/clock/tesla,fsd-clock.yaml       | 212 ++++++++++++++++++
>  1 file changed, 212 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/clock/tesla,fsd-clock.example.dts:19:18: fatal error: dt-bindings/clock/fsd-clk.h: No such file or directory
   19 |         #include <dt-bindings/clock/fsd-clk.h>
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [scripts/Makefile.lib:373: Documentation/devicetree/bindings/clock/tesla,fsd-clock.example.dt.yaml] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1413: dt_binding_check] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1579595

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.
Alim Akhtar Jan. 14, 2022, 5:48 a.m. UTC | #3 
>-----Original Message-----
>From: Krzysztof Kozlowski [mailto:krzysztof.kozlowski@canonical.com]
>Sent: Thursday, January 13, 2022 6:11 PM
>To: Alim Akhtar <alim.akhtar@samsung.com>; linux-arm-
>kernel@lists.infradead.org; linux-kernel@vger.kernel.org
>Cc: soc@kernel.org; linux-clk@vger.kernel.org; devicetree@vger.kernel.org;
>olof@lixom.net; linus.walleij@linaro.org; catalin.marinas@arm.com;
>robh+dt@kernel.org; s.nawrocki@samsung.com; linux-samsung-
>soc@vger.kernel.org; pankaj.dubey@samsung.com; linux-fsd@tesla.com
>Subject: Re: [PATCH 01/23] dt-bindings: clock: Document FSD CMU bindings
>
>On 13/01/2022 13:11, Alim Akhtar wrote:
>> Add dt-schema documentation for Tesla FSD SoC clock controller.
>>
>> Cc: linux-fsd@tesla.com
>> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
>> ---
>>  .../bindings/clock/tesla,fsd-clock.yaml       | 212 ++++++++++++++++++
>>  1 file changed, 212 insertions(+)
>>  create mode 100644
>> Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
>>
>> diff --git
>> a/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
>> b/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
>> new file mode 100644
>> index 000000000000..58f341e5004d
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
>> @@ -0,0 +1,212 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
>> +---
>> +$id:
>> +https://protect2.fireeye.com/v1/url?k=7e607c7a-1f1d943d-7e61f735-74fe
>> +485fff30-a4acf0e03cbf256d&q=1&e=05b30de9-b535-49f7-9359-
>77edd951da07&
>> +u=http%3A%2F%2Fdevicetree.org%2Fschemas%2Fclock%2Ftesla%2Cfsd-
>clock.y
>> +aml%23
>> +$schema:
>> +https://protect2.fireeye.com/v1/url?k=5c769dcb-3d0b758c-5c771684-74fe
>> +485fff30-b4007a892a5a3e44&q=1&e=05b30de9-b535-49f7-9359-
>77edd951da07&
>> +u=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
>> +
>> +title: Tesla FSD (Full Self-Driving) SoC clock controller
>> +
>> +maintainers:
>> +  - Alim Akhtar <alim.akhtar@samsung.com>
>> +  - linux-fsd@tesla.com
>> +
>> +description: |
>> +  FSD clock controller consist of several clock management unit
>> +  (CMU), which generates clocks for various inteernal SoC blocks.
>> +  The root clock comes from external OSC clock (24 MHz).
>> +
>> +  All available clocks are defined as preprocessor macros in
>> + 'dt-bindings/clock/fsd-clk.h' header.
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - tesla,fsd-clock-cmu
>> +      - tesla,fsd-clock-imem
>> +      - tesla,fsd-clock-peric
>> +      - tesla,fsd-clock-fsys0
>> +      - tesla,fsd-clock-fsys1
>> +      - tesla,fsd-clock-mfc
>> +      - tesla,fsd-clock-cam_csi
>> +
>> +  clocks:
>> +    minItems: 1
>> +    maxItems: 6
>> +
>> +  clock-names:
>> +    minItems: 1
>> +    maxItems: 6
>> +
>> +  "#clock-cells":
>> +    const: 1
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +allOf:
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            const: tesla,fsd-clock-cmu
>> +
>
>Nitpick: Drop the white-spaces between if-then. It's easier to spot the if-
>blocks if they are together.
>
Thanks will fix in next version

>> +    then:
>> +      properties:
>> +        clocks:
>> +          items:
>> +            - description: External reference clock (24 MHz)
>> +
>
>Drop this whitespace as well.
>
Noted

>Rest looks good to me, except the discussion about the compatible.
>
Have replied to the original question thread. 
>
>Best regards,
>Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml b/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
new file mode 100644
index 000000000000..58f341e5004d
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/tesla,fsd-clock.yaml
@@ -0,0 +1,212 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/tesla,fsd-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tesla FSD (Full Self-Driving) SoC clock controller
+
+maintainers:
+  - Alim Akhtar <alim.akhtar@samsung.com>
+  - linux-fsd@tesla.com
+
+description: |
+  FSD clock controller consist of several clock management unit
+  (CMU), which generates clocks for various inteernal SoC blocks.
+  The root clock comes from external OSC clock (24 MHz).
+
+  All available clocks are defined as preprocessor macros in
+  'dt-bindings/clock/fsd-clk.h' header.
+
+properties:
+  compatible:
+    enum:
+      - tesla,fsd-clock-cmu
+      - tesla,fsd-clock-imem
+      - tesla,fsd-clock-peric
+      - tesla,fsd-clock-fsys0
+      - tesla,fsd-clock-fsys1
+      - tesla,fsd-clock-mfc
+      - tesla,fsd-clock-cam_csi
+
+  clocks:
+    minItems: 1
+    maxItems: 6
+
+  clock-names:
+    minItems: 1
+    maxItems: 6
+
+  "#clock-cells":
+    const: 1
+
+  reg:
+    maxItems: 1
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: tesla,fsd-clock-cmu
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (24 MHz)
+
+        clock-names:
+          items:
+            - const: fin_pll
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: tesla,fsd-clock-imem
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (24 MHz)
+            - description: IMEM TCU clock (from CMU_CMU)
+            - description: IMEM bus clock (from CMU_CMU)
+            - description: IMEM DMA clock (from CMU_CMU)
+
+        clock-names:
+          items:
+            - const: fin_pll
+            - const: dout_cmu_imem_tcuclk
+            - const: dout_cmu_imem_aclk
+            - const: dout_cmu_imem_dmaclk
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: tesla,fsd-clock-peric
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (24 MHz)
+            - description: Shared0 PLL div4 clock (from CMU_CMU)
+            - description: PERIC shared1 div36 clock (from CMU_CMU)
+            - description: PERIC shared0 div3 TBU clock (from CMU_CMU)
+            - description: PERIC shared0 div20 clock (from CMU_CMU)
+            - description: PERIC shared1 div4 DMAclock (from CMU_CMU)
+
+        clock-names:
+          items:
+            - const: fin_pll
+            - const: dout_cmu_pll_shared0_div4
+            - const: dout_cmu_peric_shared1div36
+            - const: dout_cmu_peric_shared0div3_tbuclk
+            - const: dout_cmu_peric_shared0div20
+            - const: dout_cmu_peric_shared1div4_dmaclk
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: tesla,fsd-clock-fsys0
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (24 MHz)
+            - description: Shared0 PLL div6 clock (from CMU_CMU)
+            - description: FSYS0 shared1 div4 clock (from CMU_CMU)
+            - description: FSYS0 shared0 div4 clock (from CMU_CMU)
+
+        clock-names:
+          items:
+            - const: fin_pll
+            - const: dout_cmu_pll_shared0_div6
+            - const: dout_cmu_fsys0_shared1div4
+            - const: dout_cmu_fsys0_shared0div4
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: tesla,fsd-clock-fsys1
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (24 MHz)
+            - description: FSYS1 shared0 div8 clock (from CMU_CMU)
+            - description: FSYS1 shared0 div4 clock (from CMU_CMU)
+
+        clock-names:
+          items:
+            - const: fin_pll
+            - const: dout_cmu_fsys1_shared0div8
+            - const: dout_cmu_fsys1_shared0div4
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: tesla,fsd-clock-mfc
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (24 MHz)
+
+        clock-names:
+          items:
+            - const: fin_pll
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: tesla,fsd-clock-cam_csi
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (24 MHz)
+
+        clock-names:
+          items:
+            - const: fin_pll
+
+required:
+  - compatible
+  - "#clock-cells"
+  - clocks
+  - clock-names
+  - reg
+
+additionalProperties: false
+
+examples:
+  # Clock controller node for CMU_FSYS1
+  - |
+    #include <dt-bindings/clock/fsd-clk.h>
+
+    clock_fsys1: clock-controller@16810000 {
+          compatible = "tesla,fsd-clock-fsys1";
+          reg = <0x0 0x16810000 0x0 0x3000>;
+          #clock-cells = <1>;
+
+          clocks = <&fin_pll>,
+                   <&clock_cmu DOUT_CMU_FSYS1_SHARED0DIV8>,
+                   <&clock_cmu DOUT_CMU_FSYS1_SHARED0DIV4>;
+          clock-names = "fin_pll",
+                        "dout_cmu_fsys1_shared0div8",
+                        "dout_cmu_fsys1_shared0div4";
+    };
+
+...