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LibreELEC.tv/projects/Amlogic/devices/AMLGX/patches/linux/amlogic-0034-WIP-dt-bindings-auxdisplay-add-Titan-Micro-Electroni.patch
2025-06-26 08:56:33 +00:00

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From 793c581ca351bfa08e185c3625ede56cc4cabf3f Mon Sep 17 00:00:00 2001
From: Christian Hewitt <christianshewitt@gmail.com>
Date: Thu, 12 Jun 2025 10:30:51 +0000
Subject: [PATCH 34/37] WIP: dt-bindings: auxdisplay: add Titan Micro
Electronics TM16XX
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Add documentation for auxiliary displays based on TM16XX and compatible
LED controllers.
Signed-off-by: Jean-François Lessard <jefflessard3@gmail.com>
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
---
.../bindings/auxdisplay/tm16xx.yaml | 131 ++++++++++++++++++
1 file changed, 131 insertions(+)
create mode 100644 Documentation/devicetree/bindings/auxdisplay/tm16xx.yaml
diff --git a/Documentation/devicetree/bindings/auxdisplay/tm16xx.yaml b/Documentation/devicetree/bindings/auxdisplay/tm16xx.yaml
new file mode 100644
index 000000000000..80b54572926c
--- /dev/null
+++ b/Documentation/devicetree/bindings/auxdisplay/tm16xx.yaml
@@ -0,0 +1,131 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/auxdisplay/tm16xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TM16XX and Compatible Auxiliary Display Driver
+
+maintainers:
+ - Jean-François Lessard <jefflessard3@gmail.com>
+
+description: |
+ Bindings for auxiliary displays based on TM16XX and compatible LED controllers.
+
+properties:
+ compatible:
+ enum:
+ - titanmec,tm1618
+ - titanmec,tm1620
+ - titanmec,tm1628
+ - titanmec,tm1650
+ - fdhisi,fd620
+ - fdhisi,fd628
+ - fdhisi,fd650
+ - fdhisi,fd6551
+ - fdhisi,fd655
+ - princeton,pt6964
+ - hbs,hbs658
+
+ reg:
+ maxItems: 1
+
+ tm16xx,digits:
+ description: Array of grid indexes for each digit
+ $ref: /schemas/types.yaml#/definitions/uint8-array
+ items:
+ minimum: 0
+ maximum: 7
+ minItems: 1
+ maxItems: 8
+
+ tm16xx,segment-mapping:
+ description: Array specifying segment mapping (must be exactly 7 elements)
+ $ref: /schemas/types.yaml#/definitions/uint8-array
+ items:
+ minimum: 0
+ maximum: 7
+ minItems: 7
+ maxItems: 7
+
+ tm16xx,transposed:
+ description: |
+ Optional boolean flag indicating if the device output is transposed.
+ If not present, the default value is false.
+ $ref: /schemas/types.yaml#/definitions/flag
+
+ "#address-cells":
+ const: 2
+
+ "#size-cells":
+ const: 0
+
+patternProperties:
+ "^led@[0-7],[0-7]$":
+ $ref: /schemas/leds/common.yaml#
+ properties:
+ reg:
+ description: Grid and segment indexes
+ required:
+ - reg
+
+required:
+ - compatible
+ - reg
+ - tm16xx,digits
+ - tm16xx,segment-mapping
+
+additionalProperties: true
+
+examples:
+ - |
+ display_client: i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ display@24 {
+ compatible = "titanmec,tm1650";
+ reg = <0x24>;
+ tm16xx,digits = /bits/ 8 <0 1 2 3>;
+ tm16xx,segment-mapping = /bits/ 8 <0 1 2 3 4 5 6>;
+
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ led@4,0 {
+ reg = <4 0>;
+ function = "lan";
+ };
+
+ led@4,1 {
+ reg = <4 1>;
+ function = "wlan";
+ };
+ };
+ };
+ - |
+ display_client: spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ display@0 {
+ compatible = "titanmec,tm1628";
+ reg = <0>;
+ tm16xx,transposed;
+ tm16xx,digits = /bits/ 8 <1 2 3 4>;
+ tm16xx,segment-mapping = /bits/ 8 <0 1 2 3 4 5 6>;
+
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ led@0,2 {
+ reg = <0 2>;
+ function = "usb";
+ };
+
+ led@0,3 {
+ reg = <0 3>;
+ function = "power";
+ };
+ };
+ };
--
2.34.1