Rob Herring [off-list ref] 於 2020年8月29日 週六 上午6:05寫道：

On Fri, Aug 28, 2020 at 06:30:36PM +0800, cy_huang wrote:

quoted

From: ChiYuan Huang <redacted>

Add a devicetree binding documentation for the MT6360 Type-C driver.

usb typec: mt6360: Rename DT binding doument from mt6360 to mt636x

Signed-off-by: ChiYuan Huang <redacted>
---
 .../bindings/usb/mediatek,mt6360-tcpc.yaml         | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/mediatek,mt6360-tcpc.yaml

diff --git a/Documentation/devicetree/bindings/usb/mediatek,mt6360-tcpc.yaml b/Documentation/devicetree/bindings/usb/mediatek,mt6360-tcpc.yaml
new file mode 100644
index 00000000..9e8ab0d
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/mediatek,mt6360-tcpc.yaml

@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/usb/mediatek,mt6360-tcpc.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Mediatek MT6360 Type-C Port Switch and Power Delivery controller DT bindings
+
+maintainers:
+  - ChiYuan Huang <cy_huang@richtek.com>
+
+description: |
+  Mediatek MT6360 is a multi-functional device. It integrates charger, ADC, flash, RGB indicators,
+  regulators (BUCKs/LDOs), and TypeC Port Switch with Power Delivery controller.
+  This document only describes MT6360 Type-C Port Switch and Power Delivery controller.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt6360-tcpc
+
+  interrupts-extended:

Use 'interrupts'. The tooling will automatically support
'interrupts-extended'.

Okay.

quoted

+    maxItems: 1
+
+  interrupt-names:
+    items:
+      - const: PD_IRQB
+
+patternProperties:
+  "connector":
+    type: object
+    $ref: ../connector/usb-connector.yaml#
+    description:
+      Properties for usb c connector.
+
+additionalProperties: false
+
+required:
+  - compatible
+  - interrupts-extended
+  - interrupt-names
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/usb/pd.h>
+    i2c0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        mt6360@34 {
+            compatible = "mediatek,mt6360";
+            reg = <0x34>;
+
+            tcpc {
+                compatible = "mediatek,mt6360-tcpc";
+                interrupts-extended = <&gpio26 3 IRQ_TYPE_LEVEL_LOW>;
+                interrupt-names = "PD_IRQB";
+
+                connector {

Where's the data connections? The assumption of the binding is the USB
(2 and 3) connections come from the parent if there's no graph to the
USB controller(s).

MT6360 is only a subpmic. TypeC part only handle the CC logic to support USBPD.
For the usb connection like as usbhs/usbss,  it need to be handled
by/connect to application processor side.
LIke as connector/usb-connector.yaml decribed, it  specify the port
property to bind USB HS/SS.

quoted

+                        compatible = "usb-c-connector";
+                        label = "USB-C";
+                        data-role = "dual";
+                        power-role = "dual";
+                        try-power-role = "sink";
+                        source-pdos = <PDO_FIXED(5000, 1000, PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP)>;
+                        sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP)>;
+                        op-sink-microwatt = <10000000>;
+                };
+            };
+        };
+    };
+...
--
2.7.4

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