b0539ededaac6e6b98cd16e805380c9636b053817d204b8a3b1590dd.patch

From a7d12c75f12ae95541bf27ba156a8017600ceffd Mon Sep 17 00:00:00 2001
From: Pin-yen Lin <treapking@chromium.org>
Date: Mon, 19 Sep 2022 22:17:13 +0800
Subject: [PATCH] FROMLIST: dt/bindings: drm/bridge: it6505: Add mode-switch
 support

ITE IT6505 can be used in systems to switch USB Type-C DisplayPort
alternate mode lane traffic between 2 Type-C ports.

Update the binding to accommodate this usage by introducing a switch
property.

Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
(am from https://patches.linaro.org/project/linux-usb/patch/20220622173605.1168416-7-pmalani@chromium.org//)
(also found at https://lore.kernel.org/r/20220622173605.1168416-7-pmalani@chromium.org)

BUG=b:212382669
TEST=Check external displays on Kingler/Krabby
UPSTREAM-TASK=b:247731050

Change-Id: Ibfb66cf92ca92cf635011b00798b171e7a015c2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3904829
Reviewed-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: Sean Paul <sean@poorly.run>
Tested-by: Pin-yen Lin <treapking@chromium.org>
Commit-Queue: Pin-yen Lin <treapking@chromium.org>
---
 .../bindings/display/bridge/ite,it6505.yaml   | 73 ++++++++++++++++++-
 1 file changed, 72 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
index c9a882ee6d98f21516b5a061b41c7358c2ac0a79..d26014b1d420b8f49e9381c9b1deab1aeb4a6d59 100644
--- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
@@ -96,15 +96,48 @@ properties:
       - port@0
       - port@1
 
+  switches:
+    type: object
+    description: Set of switches controlling DisplayPort traffic on
+      outgoing RX/TX lanes to Type C ports.
+    additionalProperties: false
+
+    properties:
+      '#address-cells':
+        const: 1
+
+      '#size-cells':
+        const: 0
+
+    patternProperties:
+      '^switch@[01]$':
+        $ref: /schemas/usb/typec-switch.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          reg:
+            maxItems: 1
+
+        required:
+          - reg
+
+    required:
+      - switch@0
+
 required:
   - compatible
   - ovdd-supply
   - pwr18-supply
   - interrupts
   - reset-gpios
-  - extcon
   - ports
 
+oneOf:
+  - required:
+      - extcon
+  - required:
+      - switches
+
 additionalProperties: false
 
 examples:
@@ -146,5 +179,43 @@ examples:
                     };
                 };
             };
+
+            switches {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                switch@0 {
+                    compatible = "typec-switch";
+                    reg = <0>;
+                    mode-switch;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        port@0 {
+                            reg = <0>;
+                            ite_typec0: endpoint {
+                                remote-endpoint = <&typec_port0>;
+                            };
+                        };
+                    };
+                };
+
+                switch@1 {
+                    compatible = "typec-switch";
+                    reg = <1>;
+                    mode-switch;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        port@0 {
+                            reg = <0>;
+                            ite_typec1: endpoint {
+                                remote-endpoint = <&typec_port1>;
+                            };
+                        };
+                    };
+                };
+            };
         };
     };
-- 
2.38.3