lkml.org 
[lkml]   [2019]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH RESEND 3/4] dt-bindings: drm/bridge: Add GPIO display mux binding
Date
From: Nicolas Boichat <drinkcat@chromium.org>

Add bindings for Generic GPIO mux driver.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
---
Change from RFC to v1:
- txt to yaml
---
.../bindings/display/bridge/gpio-mux.yaml | 89 +++++++++++++++++++
1 file changed, 89 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/bridge/gpio-mux.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/gpio-mux.yaml b/Documentation/devicetree/bindings/display/bridge/gpio-mux.yaml
new file mode 100644
index 000000000000..cef098749066
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/gpio-mux.yaml
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/gpio-mux.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic display mux (1 input, 2 outputs)
+
+maintainers:
+ - Nicolas Boichat <drinkcat@chromium.org>
+
+description: |
+ This bindings describes a simple display (e.g. HDMI) mux, that has 1
+ input, and 2 outputs. The mux status is controlled by hardware, and
+ its status is read back using a GPIO.
+
+properties:
+ compatible:
+ const: gpio-display-mux
+
+ detect-gpios:
+ maxItems: 1
+ description: GPIO that indicates the active output
+
+ ports:
+ type: object
+
+ properties:
+ port@0:
+ type: object
+ description: |
+ Video port for input.
+
+ port@1:
+ type: object
+ description: |
+ 2 video ports for output.
+ The reg value in the endpoints matches the GPIO status: when
+ GPIO is asserted, endpoint with reg value <1> is selected.
+
+ required:
+ - port@0
+ - port@1
+
+required:
+ - compatible
+ - detect-gpios
+ - ports
+
+examples:
+ - |
+ hdmi_mux: hdmi_mux {
+ compatible = "gpio-display-mux";
+ status = "okay";
+ detect-gpios = <&pio 36 GPIO_ACTIVE_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&hdmi_mux_pins>;
+ ddc-i2c-bus = <&hdmiddc0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 { /* input */
+ reg = <0>;
+
+ hdmi_mux_in: endpoint {
+ remote-endpoint = <&hdmi0_out>;
+ };
+ };
+
+ port@1 { /* output */
+ reg = <1>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hdmi_mux_out_anx: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&anx7688_in>;
+ };
+
+ hdmi_mux_out_hdmi: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&hdmi_connector_in>;
+ };
+ };
+ };
+ };
--
2.24.0.525.g8f36a354ae-goog
\
 
 \ /
  Last update: 2019-12-11 07:21    [W:0.074 / U:31.912 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site