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

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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@xxxxxxxxxxxxxx>
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
---

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






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