[PATCH 1/6] dt-bindings: PCI: toshiba,tc9563: Restrict Tx Amplitude, DFE and N_FTS to USP, DSP1 and DSP2

[Manivannan Sadhasivam via B4 Relay]

From: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxxxxxxxx>

TC9563 switch allows configuring Tx Amplitude, DFE and N_FTS settings only
to USP, DSP1 and DSP2 ports. These settings don't apply to DSP3 and also
the integrated Ethernet MAC Endpoint.

So restrict these properties and also move the
'toshiba,tx-amplitude-microvolt' property to DSP2 in the example to conform
to the binding.

Fixes: 26f3ac884835 ("dt-bindings: PCI: Add binding for Toshiba TC9563 PCIe switch")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/pci/toshiba,tc9563.yaml     | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/toshiba,tc9563.yaml b/Documentation/devicetree/bindings/pci/toshiba,tc9563.yaml
index b3ad05d90201..f084830c6d0c 100644
--- a/Documentation/devicetree/bindings/pci/toshiba,tc9563.yaml
+++ b/Documentation/devicetree/bindings/pci/toshiba,tc9563.yaml
@@ -54,7 +54,7 @@ properties:
           - description: I2C slave address
 
 patternProperties:
-  "^pcie@[1-3],0$":
+  "^pcie@[1-2],0$":
     description:
       child nodes describing the internal downstream ports of
       the tc9563 switch.
@@ -64,6 +64,21 @@ patternProperties:
       - $ref: /schemas/pci/pci-pci-bridge.yaml#
     unevaluatedProperties: false
 
+  "^pcie@[3],0$":
+    description:
+      child node describing the internal downstream port connected to the
+      integrated Ethernet MAC endpoint of the tc9563 switch.
+    type: object
+    $ref: /schemas/pci/pci-pci-bridge.yaml#
+    properties:
+      n-fts: false
+    patternProperties:
+      "^ethernet@0,[0-1]$":
+        type: object
+        properties:
+          n-fts: false
+    unevaluatedProperties: false
+
 $defs:
   tc9563-node:
     type: object
@@ -154,6 +169,8 @@ examples:
                     device_type = "pci";
                     ranges;
                     bus-range = <0x04 0xff>;
+
+                    toshiba,tx-amplitude-microvolt = <10>;
                 };
 
                 pcie@3,0 {
@@ -165,8 +182,6 @@ examples:
                     ranges;
                     bus-range = <0x05 0xff>;
 
-                    toshiba,tx-amplitude-microvolt = <10>;
-
                     ethernet@0,0 {
                         reg = <0x50000 0x0 0x0 0x0 0x0>;
                     };

-- 
2.43.0