[RESEND PATCH v5 1/2] dt-bindings: display: himax,hx8837: Add Himax HX8837 bindings

Lubomir Rintel
2020-09-26T00:07:33Z

Himax HX8837 is a secondary display controller used to drive the panel
on OLPC platforms.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Rob Herring <robh@kernel.org>

---
Changes since v4:
- Rob's Reviewed-by

Changes since v3:
- Moved to bindings/display/
- Added the ports
- Converted to YAML
- Removed Pavel's Ack, because the changes are substantial

Changes since v2:
- s/betweend/between/

Changes since v1:
- s/load-gpio/load-gpios/
- Use interrupt bindings instead of gpio for the IRQ

.../bindings/display/bridge/himax,hx8837.yaml | 96 +++++++++++++++++++
1 file changed, 96 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/bridge/himax,hx8837.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/himax,hx8837.yaml b/Documentation/devicetree/bindings/display/bridge/himax,hx8837.yaml
new file mode 100644
index 0000000000000..f5b0a00f5089d
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/himax,hx8837.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2018,2019,2020 Lubomir Rintel <lkundrak@v3.sk>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/himax,hx8837.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HX8837 Display Controller Device Tree Bindings
+
+maintainers:
+ - Lubomir Rintel <lkundrak@v3.sk>
+
+properties:
+ compatible:
+ const: himax,hx8837
+
+ reg:
+ const: 0xd
+
+ load-gpios:
+ maxItems: 1
+ description: GPIO specifier of DCON_LOAD pin (active high)
+
+ stat-gpios:
+ minItems: 2
+ description: GPIO specifier of DCON_STAT0 and DCON_STAT1 pins (active high)
+
+ interrupts:
+ maxItems: 1
+ description: Interrupt specifier of DCON_IRQ pin (edge falling)
+
+ ports:
+ type: object
+
+ properties:
+ port@0:
+ type: object
+ description: |
+ Video port for RGB input.
+
+ port@1:
+ type: object
+ description: |
+ Video port connected to the panel.
+
+ required:
+ - port@0
+ - port@1
+
+required:
+ - compatible
+ - reg
+ - load-gpios
+ - stat-gpios
+ - interrupts
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ lcd-controller@d {
+ compatible = "himax,hx8837";
+ reg = <0x0d>;
+ stat-gpios = <&gpio 100 GPIO_ACTIVE_HIGH>,
+ <&gpio 101 GPIO_ACTIVE_HIGH>;
+ load-gpios = <&gpio 142 GPIO_ACTIVE_HIGH>;
+ interrupts = <&gpio 124 IRQ_TYPE_EDGE_FALLING>;
+
+ ports {
+ #address-cells = <0x01>;
+ #size-cells = <0x00>;
+
+ port@0 {
+ reg = <0x00>;
+ dcon_rgb_in: endpoint {
+ remote-endpoint = <&lcd0_rgb_out>;
+ };
+ };
+
+ port@1 {
+ reg = <0x01>;
+ dcon_gettl_out: endpoint {
+ remote-endpoint = <&panel_dettl_in>;
+ };
+ };
+ };
+ };
+ };
--
2.26.2