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From:   Siddharth Vadapalli <s-vadapalli@ti.com>
To:     <robh+dt@kernel.org>, <lee.jones@linaro.org>,
        <krzysztof.kozlowski@linaro.org>,
        <krzysztof.kozlowski+dt@linaro.org>, <kishon@ti.com>,
        <vkoul@kernel.org>, <dan.carpenter@oracle.com>,
        <grygorii.strashko@ti.com>, <rogerq@kernel.org>
CC:     <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-phy@lists.infradead.org>,
        <linux-arm-kernel@lists.infradead.org>, <sjakhade@cadence.com>,
        <s-vadapalli@ti.com>
Subject: [PATCH 1/6] dt-bindings: phy: ti: phy-gmii-sel: Add bindings for J721e
Date:   Wed, 14 Sep 2022 15:09:06 +0530
Message-ID: <20220914093911.187764-2-s-vadapalli@ti.com>
In-Reply-To: <20220914093911.187764-1-s-vadapalli@ti.com>
References: <20220914093911.187764-1-s-vadapalli@ti.com>
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TI's J721e SoC supports additional PHY modes like QSGMII and SGMII
that are not supported on earlier SoCs. Add a compatible for it.

Extend ti,qsgmii-main-ports property to support selection of upto
two main ports at once across the two QSGMII interfaces.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---
 .../bindings/phy/ti,phy-gmii-sel.yaml         | 52 ++++++++++++++++---
 1 file changed, 46 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/phy/ti,phy-gmii-sel.yaml b/Documentation/devicetree/bindings/phy/ti,phy-gmii-sel.yaml
index da7cac537e15..1e19efab018b 100644
--- a/Documentation/devicetree/bindings/phy/ti,phy-gmii-sel.yaml
+++ b/Documentation/devicetree/bindings/phy/ti,phy-gmii-sel.yaml
@@ -54,6 +54,7 @@ properties:
       - ti,dm814-phy-gmii-sel
       - ti,am654-phy-gmii-sel
       - ti,j7200-cpsw5g-phy-gmii-sel
+      - ti,j721e-cpsw9g-phy-gmii-sel
 
   reg:
     maxItems: 1
@@ -65,12 +66,19 @@ properties:
     description: |
       Required only for QSGMII mode. Array to select the port for
       QSGMII main mode. Rest of the ports are selected as QSGMII_SUB
-      ports automatically. Any one of the 4 CPSW5G ports can act as the
-      main port with the rest of them being the QSGMII_SUB ports.
-    maxItems: 1
-    items:
-      minimum: 1
-      maximum: 4
+      ports automatically. For J7200 CPSW5G with the compatible:
+      ti,j7200-cpsw5g-phy-gmii-sel, ti,qsgmii-main-ports is an
+      array of only one element, which is the port number ranging from
+      1 to 4. For J721e CPSW9G with the compatible:
+      ti,j721e-cpsw9g-phy-gmii-sel, ti,qsgmii-main-ports is an array
+      of two elements, which corresponds to two potential QSGMII main
+      ports. The first element and second element of the array can both
+      range from 1 to 8 each, corresponding to two QSGMII main ports.
+      For J721e CPSW9G, to configure port 2 as the first QSGMII main
+      port and port 7 as the second QSGMII main port, we specify:
+      ti,qsgmii-main-ports = <2>, <7>;
+      If only one QSGMII main port is desired, mention the same main
+      port twice.
 
 allOf:
   - if:
@@ -81,12 +89,43 @@ allOf:
               - ti,dra7xx-phy-gmii-sel
               - ti,dm814-phy-gmii-sel
               - ti,am654-phy-gmii-sel
+              - ti,j7200-cpsw5g-phy-gmii-sel
+              - ti,j721e-cpsw9g-phy-gmii-sel
     then:
       properties:
         '#phy-cells':
           const: 1
           description: CPSW port number (starting from 1)
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - ti,j7200-cpsw5g-phy-gmii-sel
+    then:
+      properties:
+        ti,qsgmii-main-ports:
+          maxItems: 1
+          items:
+            minimum: 1
+            maximum: 4
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - ti,j721e-cpsw9g-phy-gmii-sel
+    then:
+      properties:
+        ti,qsgmii-main-ports:
+          minItems: 2
+          maxItems: 2
+          items:
+            minimum: 1
+            maximum: 8
+
   - if:
       not:
         properties:
@@ -94,6 +133,7 @@ allOf:
             contains:
               enum:
                 - ti,j7200-cpsw5g-phy-gmii-sel
+                - ti,j721e-cpsw9g-phy-gmii-sel
     then:
       properties:
         ti,qsgmii-main-ports: false
-- 
2.25.1