Thread (47 messages) 47 messages, 4 authors, 2024-07-29

Re: [PATCH v4 02/12] dt-bindings: PCI: brcmstb: Add 7712 SoC description

From: Krzysztof Kozlowski <krzk@kernel.org>
Date: 2024-07-24 06:02:28
Also in: linux-devicetree, linux-pci, lkml

On 23/07/2024 23:03, Jim Quinlan wrote:
On Wed, Jul 17, 2024 at 2:53 AM Krzysztof Kozlowski [off-list ref] wrote:
quoted
On 16/07/2024 23:31, Jim Quinlan wrote:
quoted
This adds the description for the 7712 SoC, a Broadcom
STB sibling chip of the RPi 5.  Two new reset controllers
are described.

Signed-off-by: Jim Quinlan <redacted>
---
 .../bindings/pci/brcm,stb-pcie.yaml           | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
diff --git a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
index 692f7ed7c98e..90683a0df2c5 100644
--- a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
@@ -21,6 +21,7 @@ properties:
           - brcm,bcm7425-pcie # Broadcom 7425 MIPs
           - brcm,bcm7435-pcie # Broadcom 7435 MIPs
           - brcm,bcm7445-pcie # Broadcom 7445 Arm
+          - brcm,bcm7712-pcie # Broadcom STB sibling of Rpi 5

   reg:
     maxItems: 1
@@ -100,12 +101,16 @@ properties:
     items:
       - description: reset for external PCIe PERST# signal # perst
       - description: reset for phy reset calibration       # rescal
+      - description: reset for PCIe/CPU bus bridge         # bridge
+      - description: reset for soft PCIe core reset        # swinit

   reset-names:
     minItems: 1
     items:
       - const: perst
       - const: rescal
+      - const: bridge
+      - const: swinit
This does not match at all what you have in allOf:if:then section.
quoted
 required:
   - compatible
@@ -159,6 +164,27 @@ allOf:
         - resets
         - reset-names

+  - if:
+      properties:
+        compatible:
+          contains:
+            const: brcm,bcm7712-pcie
+    then:
+      properties:
+        resets:
+          minItems: 3
+          maxItems: 3
+
+        reset-names:
+          items:
+            - const: rescal
Look - here it is rescal. Before you said it must be perst.

https://elixir.bootlin.com/linux/v6.8/source/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml#L132
Hello Krzysztof,

The difference between my commits and the above example is that the
above example has no "desc" line(s) to describe the clocks  -- How
Which does not really matter to illustrate the concept where you define
the widest constraints and where you narrow them.
would you add this?  Or are you okay with (a) no description or (b)
using a "#comment..." next to the clock's name?


Best regards,
Krzysztof

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