linux-kernel - [PATCH v4 1/4] dt-bindings: usb: Add Parade PS8830 Type-C retimer bindings

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Message-Id: <20241101-x1e80100-ps8830-v4-1-f0f7518b263e@linaro.org>
Date: Fri, 01 Nov 2024 18:29:39 +0200
From: Abel Vesa <abel.vesa@...aro.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, 
 Rajendra Nayak <quic_rjendra@...cinc.com>, 
 Sibi Sankar <quic_sibis@...cinc.com>, Johan Hovold <johan@...nel.org>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
 Trilok Soni <quic_tsoni@...cinc.com>, linux-kernel@...r.kernel.org, 
 linux-usb@...r.kernel.org, devicetree@...r.kernel.org, 
 Abel Vesa <abel.vesa@...aro.org>
Subject: [PATCH v4 1/4] dt-bindings: usb: Add Parade PS8830 Type-C retimer
 bindings

The Parade PS8830 is a USB4, DisplayPort and Thunderbolt 4 retimer,
controlled over I2C. It usually sits between a USB/DisplayPort PHY and the
Type-C connector, and provides orientation and altmode handling.

Currently, it is found on all boards featuring the Qualcomm Snapdragon
X Elite SoCs.

Document bindings for its new driver. Future-proof the schema for the
PS8833 variant, which seems to be similar to PS8830.

Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
---
 .../devicetree/bindings/usb/parade,ps883x.yaml     | 123 +++++++++++++++++++++
 1 file changed, 123 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/parade,ps883x.yaml b/Documentation/devicetree/bindings/usb/parade,ps883x.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..4045714e487a43681336c961143b27264c081856
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/parade,ps883x.yaml
@@ -0,0 +1,123 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/parade,ps883x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Parade PS883x USB and DisplayPort Retimer
+
+maintainers:
+  - Abel Vesa <abel.vesa@...aro.org>
+
+properties:
+  compatible:
+    enum:
+      - parade,ps8830
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: XO Clock
+
+  ps8830,boot-on:
+    description: Left enabled at boot, so skip resetting
+    type: boolean
+
+  reset-gpios:
+    maxItems: 1
+
+  vdd-supply:
+    description: power supply (1.07V)
+
+  vdd33-supply:
+    description: power supply (3.3V)
+
+  vdd33-cap-supply:
+    description: power supply (3.3V)
+
+  vddar-supply:
+    description: power supply (1.07V)
+
+  vddat-supply:
+    description: power supply (1.07V)
+
+  vddio-supply:
+    description: power supply (1.2V or 1.8V)
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - reset-gpios
+  - vdd-supply
+  - vdd33-supply
+  - vdd33-cap-supply
+  - vddat-supply
+  - vddio-supply
+  - orientation-switch
+  - retimer-switch
+
+allOf:
+  - $ref: usb-switch.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        typec-mux@8 {
+            compatible = "parade,ps8830";
+            reg = <0x8>;
+
+            clocks = <&clk_rtmr_xo>;
+
+            vdd-supply = <&vreg_rtmr_1p15>;
+            vdd33-supply = <&vreg_rtmr_3p3>;
+            vdd33-cap-supply = <&vreg_rtmr_3p3>;
+            vddar-supply = <&vreg_rtmr_1p15>;
+            vddat-supply = <&vreg_rtmr_1p15>;
+            vddio-supply = <&vreg_rtmr_1p8>;
+
+            reset-gpios = <&tlmm 10 GPIO_ACTIVE_LOW>;
+
+            retimer-switch;
+            orientation-switch;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+
+                    endpoint {
+                        remote-endpoint = <&typec_con_ss>;
+                    };
+                };
+
+                port@1 {
+                    reg = <1>;
+
+                    endpoint {
+                        remote-endpoint = <&usb_phy_ss>;
+                    };
+                };
+
+                port@2 {
+                    reg = <2>;
+
+                    endpoint {
+                        remote-endpoint = <&typec_dp_aux>;
+                    };
+                };
+            };
+        };
+    };
+...

-- 
2.34.1