[PATCH v6 1/2] dt-bindings: PCI: dw: rockchip: Add rk3576 support

[PATCH v6 1/2] dt-bindings: PCI: dw: rockchip: Add rk3576 support

[Kever Yang]

rk3576 is using DWC PCIe controller, with msi interrupt directly to GIC
instead of using GIC ITS, so
- no ITS support is required and the 'msi-map' is not required,
- a new 'msi' interrupt is needed.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---

Changes in v6:
- Fix make dt_binding_check and make CHECK_DTBS=y

Changes in v5:
- Add constraints per device for interrupt-names due to the interrupt is
different from rk3588.

Changes in v4:
- Fix wrong indentation in dt_binding_check report by Rob

Changes in v3:
- Fix dtb check broken on rk3588
- Update commit message

Changes in v2:
- remove required 'msi-map'
- add interrupt name 'msi'

 .../bindings/pci/rockchip-dw-pcie-common.yaml | 41 ++++++++++++++++++-
 .../bindings/pci/rockchip-dw-pcie.yaml        | 19 ++++++---
 2 files changed, 52 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
index cc9adfc7611c..e1ca8e2f35fe 100644
--- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
@@ -65,7 +65,11 @@ properties:
           tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx,
           nf_err_rx, f_err_rx, radm_qoverflow
       - description:
-          eDMA write channel 0 interrupt
+          If the matching interrupt name is "msi", then this is the combinded
+          MSI line interrupt, which is to support MSI interrupts output to GIC
+          controller via GIC SPI interrupt instead of GIC its interrupt.
+          If the matching interrupt name is "dma0", then this is the eDMA write
+          channel 0 interrupt.
       - description:
           eDMA write channel 1 interrupt
       - description:
@@ -81,7 +85,9 @@ properties:
       - const: msg
       - const: legacy
       - const: err
-      - const: dma0
+      - enum:
+          - msi
+          - dma0
       - const: dma1
       - const: dma2
       - const: dma3
@@ -123,4 +129,35 @@ required:
 
 additionalProperties: true
 
+anyOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3576-pcie
+    then:
+      properties:
+        interrupt-names:
+          items:
+            - const: sys
+            - const: pmc
+            - const: msg
+            - const: legacy
+            - const: err
+            - const: msi
+    else:
+      properties:
+        interrupt-names:
+          minItems: 5
+          items:
+            - const: sys
+            - const: pmc
+            - const: msg
+            - const: legacy
+            - const: err
+            - const: dma0
+            - const: dma1
+            - const: dma2
+            - const: dma3
+
 ...
diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
index 550d8a684af3..d727502ed822 100644
--- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
@@ -16,16 +16,13 @@ description: |+
   PCIe IP and thus inherits all the common properties defined in
   snps,dw-pcie.yaml.
 
-allOf:
-  - $ref: /schemas/pci/snps,dw-pcie.yaml#
-  - $ref: /schemas/pci/rockchip-dw-pcie-common.yaml#
-
 properties:
   compatible:
     oneOf:
       - const: rockchip,rk3568-pcie
       - items:
           - enum:
+              - rockchip,rk3576-pcie
               - rockchip,rk3588-pcie
           - const: rockchip,rk3568-pcie
 
@@ -71,8 +68,18 @@ properties:
 
   vpcie3v3-supply: true
 
-required:
-  - msi-map
+allOf:
+  - $ref: /schemas/pci/snps,dw-pcie.yaml#
+  - $ref: /schemas/pci/rockchip-dw-pcie-common.yaml#
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: rockchip,rk3576-pcie
+    then:
+      required:
+        - msi-map
 
 unevaluatedProperties: false
 
-- 
2.25.1

Re: [PATCH v6 1/2] dt-bindings: PCI: dw: rockchip: Add rk3576 support

[Krzysztof Kozlowski]

On Mon, Feb 24, 2025 at 03:49:27PM +0800, Kever Yang wrote:
> rk3576 is using DWC PCIe controller, with msi interrupt directly to GIC
> instead of using GIC ITS, so
> - no ITS support is required and the 'msi-map' is not required,
> - a new 'msi' interrupt is needed.
> 
> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
> ---
> 
> Changes in v6:
> - Fix make dt_binding_check and make CHECK_DTBS=y
> 
> Changes in v5:
> - Add constraints per device for interrupt-names due to the interrupt is
> different from rk3588.
> 
> Changes in v4:
> - Fix wrong indentation in dt_binding_check report by Rob
> 
> Changes in v3:
> - Fix dtb check broken on rk3588
> - Update commit message
> 
> Changes in v2:
> - remove required 'msi-map'
> - add interrupt name 'msi'
> 
>  .../bindings/pci/rockchip-dw-pcie-common.yaml | 41 ++++++++++++++++++-
>  .../bindings/pci/rockchip-dw-pcie.yaml        | 19 ++++++---
>  2 files changed, 52 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
> index cc9adfc7611c..e1ca8e2f35fe 100644
> --- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
> +++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
> @@ -65,7 +65,11 @@ properties:
>            tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx,
>            nf_err_rx, f_err_rx, radm_qoverflow
>        - description:
> -          eDMA write channel 0 interrupt
> +          If the matching interrupt name is "msi", then this is the combinded
> +          MSI line interrupt, which is to support MSI interrupts output to GIC
> +          controller via GIC SPI interrupt instead of GIC its interrupt.
> +          If the matching interrupt name is "dma0", then this is the eDMA write
> +          channel 0 interrupt.
>        - description:
>            eDMA write channel 1 interrupt
>        - description:
> @@ -81,7 +85,9 @@ properties:
>        - const: msg
>        - const: legacy
>        - const: err
> -      - const: dma0
> +      - enum:
> +          - msi
> +          - dma0
>        - const: dma1
>        - const: dma2
>        - const: dma3
> @@ -123,4 +129,35 @@ required:
>  
>  additionalProperties: true
>  
> +anyOf:

There is never syntax like that. Where did you find it (so we can fix
it)?

> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: rockchip,rk3576-pcie

This does not belong to common schema, but to device specific. I don't
see this compatible in this common schema at all.


> +    then:
> +      properties:

interrupts:
  minItems: 6
  maxItems: 6

> +        interrupt-names:
> +          items:
> +            - const: sys
> +            - const: pmc
> +            - const: msg
> +            - const: legacy
> +            - const: err

Best regards,
Krzysztof

Re: [PATCH v6 1/2] dt-bindings: PCI: dw: rockchip: Add rk3576 support

[Krzysztof Kozlowski]

On 24/02/2025 08:49, Kever Yang wrote:
> rk3576 is using DWC PCIe controller, with msi interrupt directly to GIC
> instead of using GIC ITS, so
> - no ITS support is required and the 'msi-map' is not required,
> - a new 'msi' interrupt is needed.
> 
> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
> ---
> 
> Changes in v6:
> - Fix make dt_binding_check and make CHECK_DTBS=y


Now I see you already sent v6 and you already received review.

Implement previous review and respond to it.

Best regards,
Krzysztof

Re: [PATCH v6 1/2] dt-bindings: PCI: dw: rockchip: Add rk3576 support

[Kever Yang]

Hi Krzysztof,

     Thanks for your review.

On 2025/2/24 17:28, Krzysztof Kozlowski wrote:
> On Mon, Feb 24, 2025 at 03:49:27PM +0800, Kever Yang wrote:
>> rk3576 is using DWC PCIe controller, with msi interrupt directly to GIC
>> instead of using GIC ITS, so
>> - no ITS support is required and the 'msi-map' is not required,
>> - a new 'msi' interrupt is needed.
>>
>> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
>> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
>> ---
>>
>> Changes in v6:
>> - Fix make dt_binding_check and make CHECK_DTBS=y
>>
>> Changes in v5:
>> - Add constraints per device for interrupt-names due to the interrupt is
>> different from rk3588.
>>
>> Changes in v4:
>> - Fix wrong indentation in dt_binding_check report by Rob
>>
>> Changes in v3:
>> - Fix dtb check broken on rk3588
>> - Update commit message
>>
>> Changes in v2:
>> - remove required 'msi-map'
>> - add interrupt name 'msi'
>>
>>   .../bindings/pci/rockchip-dw-pcie-common.yaml | 41 ++++++++++++++++++-
>>   .../bindings/pci/rockchip-dw-pcie.yaml        | 19 ++++++---
>>   2 files changed, 52 insertions(+), 8 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
>> index cc9adfc7611c..e1ca8e2f35fe 100644
>> --- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
>> +++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
>> @@ -65,7 +65,11 @@ properties:
>>             tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx,
>>             nf_err_rx, f_err_rx, radm_qoverflow
>>         - description:
>> -          eDMA write channel 0 interrupt
>> +          If the matching interrupt name is "msi", then this is the combinded
>> +          MSI line interrupt, which is to support MSI interrupts output to GIC
>> +          controller via GIC SPI interrupt instead of GIC its interrupt.
>> +          If the matching interrupt name is "dma0", then this is the eDMA write
>> +          channel 0 interrupt.
>>         - description:
>>             eDMA write channel 1 interrupt
>>         - description:
>> @@ -81,7 +85,9 @@ properties:
>>         - const: msg
>>         - const: legacy
>>         - const: err
>> -      - const: dma0
>> +      - enum:
>> +          - msi
>> +          - dma0
>>         - const: dma1
>>         - const: dma2
>>         - const: dma3
>> @@ -123,4 +129,35 @@ required:
>>   
>>   additionalProperties: true
>>   
>> +anyOf:
> There is never syntax like that. Where did you find it (so we can fix
> it)?
>
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            const: rockchip,rk3576-pcie
> This does not belong to common schema, but to device specific. I don't
> see this compatible in this common schema at all.

The common schema covers rockchip-dw-pcie.yaml and rockchip-dw-pcie-ep.yaml,

so I though I should add the if condition here.


>
>> +    then:
>> +      properties:
> interrupts:
>    minItems: 6
>    maxItems: 6
Will add this back.

Thanks,
- Kever
>> +        interrupt-names:
>> +          items:
>> +            - const: sys
>> +            - const: pmc
>> +            - const: msg
>> +            - const: legacy
>> +            - const: err
> Best regards,
> Krzysztof
>
>

Re: [PATCH v6 1/2] dt-bindings: PCI: dw: rockchip: Add rk3576 support

[Krzysztof Kozlowski]

On 25/02/2025 09:38, Kever Yang wrote:
>>>   
>>>   additionalProperties: true
>>>   
>>> +anyOf:
>> There is never syntax like that. Where did you find it (so we can fix
>> it)?


... therefore please use existing code as examples instead of coming
with entirely new syntax.

>>
>>> +  - if:
>>> +      properties:
>>> +        compatible:
>>> +          contains:
>>> +            const: rockchip,rk3576-pcie
>> This does not belong to common schema, but to device specific. I don't
>> see this compatible in this common schema at all.
> 
> The common schema covers rockchip-dw-pcie.yaml and rockchip-dw-pcie-ep.yaml,
> 
> so I though I should add the if condition here.


You do not have compatibles here so you cannot add here code depending
on compatibles.

Best regards,
Krzysztof