linux-kernel - [PATCH 1/7] dt-bindings: phy: samsung,usb3-drd-phy: add gs101 compatible

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Message-Id: <20240423-usb-phy-gs101-v1-1-ebdcb3ac174d@linaro.org>
Date: Tue, 23 Apr 2024 18:06:03 +0100
From: André Draszik <andre.draszik@...aro.org>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Peter Griffin <peter.griffin@...aro.org>, 
 Marek Szyprowski <m.szyprowski@...sung.com>, 
 Sylwester Nawrocki <s.nawrocki@...sung.com>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Sam Protsenko <semen.protsenko@...aro.org>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Will McVicker <willmcvicker@...gle.com>, Roy Luo <royluo@...gle.com>, 
 kernel-team@...roid.com, linux-phy@...ts.infradead.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 André Draszik <andre.draszik@...aro.org>
Subject: [PATCH 1/7] dt-bindings: phy: samsung,usb3-drd-phy: add gs101
 compatible

Add a dedicated google,gs101-usb31drd-phy compatible for Google Tensor
gs101 SoC.

It needs additional clocks enabled for register access, and additional
memory regions (PCS & PMA) are required for successful configuration.

Signed-off-by: André Draszik <andre.draszik@...aro.org>
---
 .../bindings/phy/samsung,usb3-drd-phy.yaml         | 78 +++++++++++++++++-----
 1 file changed, 61 insertions(+), 17 deletions(-)

diff --git a/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml b/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml
index 452e584d9812..db1dc4c60b72 100644
--- a/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml
@@ -25,6 +25,7 @@ description: |
 properties:
   compatible:
     enum:
+      - google,gs101-usb31drd-phy
       - samsung,exynos5250-usbdrd-phy
       - samsung,exynos5420-usbdrd-phy
       - samsung,exynos5433-usbdrd-phy
@@ -57,7 +58,18 @@ properties:
       the OF graph bindings specified.
 
   reg:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: PHY register base address.
+      - description: PCS register base address.
+      - description: PMA register base address.
+
+  reg-names:
+    minItems: 1
+    items:
+      - const: phy
+      - const: pcs
+      - const: pma
 
   samsung,pmu-syscon:
     $ref: /schemas/types.yaml#/definitions/phandle
@@ -85,30 +97,62 @@ allOf:
       properties:
         compatible:
           contains:
-            enum:
-              - samsung,exynos5433-usbdrd-phy
-              - samsung,exynos7-usbdrd-phy
+            const: google,gs101-usb31drd-phy
     then:
       properties:
         clocks:
-          minItems: 5
-          maxItems: 5
-        clock-names:
           items:
-            - const: phy
-            - const: ref
-            - const: phy_utmi
-            - const: phy_pipe
-            - const: itp
-    else:
-      properties:
-        clocks:
-          minItems: 2
-          maxItems: 2
+            - description: Gate of main PHY clock
+            - description: Gate of PHY reference clock
+            - description: Gate of control interface AXI clock
+            - description: Gate of control interface APB clock
+            - description: Gate of SCL APB clock
         clock-names:
           items:
             - const: phy
             - const: ref
+            - const: ctrl_aclk
+            - const: ctrl_pclk
+            - const: scl_pclk
+        reg:
+          minItems: 3
+        reg-names:
+          minItems: 3
+      required:
+        - reg-names
+    else:
+      if:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - samsung,exynos5433-usbdrd-phy
+                - samsung,exynos7-usbdrd-phy
+      then:
+        properties:
+          clocks:
+            minItems: 5
+            maxItems: 5
+          clock-names:
+            items:
+              - const: phy
+              - const: ref
+              - const: phy_utmi
+              - const: phy_pipe
+              - const: itp
+          reg:
+            maxItems: 1
+      else:
+        properties:
+          clocks:
+            minItems: 2
+            maxItems: 2
+          clock-names:
+            items:
+              - const: phy
+              - const: ref
+          reg:
+            maxItems: 1
 
 additionalProperties: false
 

-- 
2.44.0.769.g3c40516874-goog