[PATCH v3 2/6] dt-bindings: PCI: dwc: rockchip: Add optional dma interrupts

[Niklas Cassel]

From: Niklas Cassel <niklas.cassel at wdc.com>

Even though rockchip-dw-pcie.yaml inherits snps,dw-pcie.yaml
using:

allOf:
  - $ref: /schemas/pci/snps,dw-pcie.yaml#

and snps,dw-pcie.yaml does have the dma interrupts defined, in order to be
able to use these interrupts, while still making sure 'make CHECK_DTBS=y'
pass, we need to add these interrupts to rockchip-dw-pcie.yaml.

These dedicated interrupts for the eDMA are not always wired to all the
PCIe controllers on the same SoC. In other words, even for a specific
compatible, e.g. rockchip,rk3588-pcie, these dedicated eDMA interrupts
may or may not be wired.

Signed-off-by: Niklas Cassel <niklas.cassel at wdc.com>
---
 .../bindings/pci/rockchip-dw-pcie.yaml         | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
index 6ca87ff4ae20..7ad6e1283784 100644
--- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
@@ -63,6 +63,7 @@ properties:
       - const: pipe
 
   interrupts:
+    minItems: 5
     items:
       - description:
           Combined system interrupt, which is used to signal the following
@@ -86,14 +87,31 @@ properties:
           interrupts - aer_rc_err, aer_rc_err_msi, rx_cpl_timeout,
           tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx,
           nf_err_rx, f_err_rx, radm_qoverflow
+      - description:
+          Indicates that the eDMA Tx/Rx transfer is complete or that an
+          error has occurred on the corresponding channel.
+      - description:
+          Indicates that the eDMA Tx/Rx transfer is complete or that an
+          error has occurred on the corresponding channel.
+      - description:
+          Indicates that the eDMA Tx/Rx transfer is complete or that an
+          error has occurred on the corresponding channel.
+      - description:
+          Indicates that the eDMA Tx/Rx transfer is complete or that an
+          error has occurred on the corresponding channel.
 
   interrupt-names:
+    minItems: 5
     items:
       - const: sys
       - const: pmc
       - const: msg
       - const: legacy
       - const: err
+      - const: dma0
+      - const: dma1
+      - const: dma2
+      - const: dma3
 
   legacy-interrupt-controller:
     description: Interrupt controller node for handling legacy PCI interrupts.
-- 
2.41.0