The LCDC IP used by some Atmel SOC's have a
multifunction device that include two sub-devices:
- pwm
- display controller
This binding describe the multi function device
that act as root for the sub-devices
The Atmel SOC's are at91sam9 etc.
The compatible name is intentionally
prefixed with -mfd to avoid clash with existing
compatible entries.
Signed-off-by: Sam Ravnborg <s...@ravnborg.org>
Cc: Lee Jones <lee.jo...@linaro.org>
Cc: Boris Brezillon <boris.brezil...@free-electrons.com>
---
.../devicetree/bindings/mfd/atmel-lcdc.txt | 75 ++++++++++++++++++++++
1 file changed, 75 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/atmel-lcdc.txt
diff --git a/Documentation/devicetree/bindings/mfd/atmel-lcdc.txt
b/Documentation/devicetree/bindings/mfd/atmel-lcdc.txt
new file mode 100644
index 000000000000..70e9b7bda6c7
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/atmel-lcdc.txt
@@ -0,0 +1,75 @@
+Device-Tree bindings for Atmel's LCDC (LCD Controller) MFD driver
+
+Required properties:
+ - compatible: value should be one of the following:
+ "atmel,at91sam9261-lcdc-mfd"
+ "atmel,at91sam9263-lcdc-mfd"
+ "atmel,at91sam9g10-lcdc-mfd"
+ "atmel,at91sam9g45-lcdc-mfd"
+ "atmel,at91sam9g46-lcdc-mfd"
+ "atmel,at91sam9m10-lcdc-mfd"
+ "atmel,at91sam9m11-lcdc-mfd"
+ "atmel,at91sam9rl-lcdc-mfd"
+ - reg: base address and size of the LCDC device registers.
+ - clock-names: the name of the 2 clocks requested by the LCDC device.
+ Should contain "lcdc_clk", and "hclk".
+ - clocks: should contain the 2 clocks requested by the LCDC device.
+ May specify the same clock twice is there is no need to enable
+ "hclk" to use the display.
+ - interrupts: should contain the description of the LCDC interrupt line
+
+The LCDC IP exposes two subdevices:
+ - a PWM chip: see ../pwm/atmel-lcdc-pwm.txt
+ - a Display Controller: see ../display/atmel/lcdc-display-controller.txt
+
+Example:
+ lcdc0: lcdc@700000 {
+ compatible = "atmel,at91sam9263-lcdc-mfd";
+ reg = <0x700000 0x1000>;
+ interrupts = <26 IRQ_TYPE_LEVEL_HIGH 3>;
+ clocks = <&lcd_clk>, <&lcd_clk>;
+ clock-names = "lcdc_clk", "hclk";
+
+ lcdc-display-controller {
+ compatible = "atmel,lcdc-display-controller";
+ lcd-supply = <&lcdc_reg>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ lcdc_panel_output: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&panel_input>;
+ };
+ };
+ };
+
+ lcdc_pwm: lcdc-pwm {
+ compatible = "atmel,lcdc-pwm";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_lcdc_pwm>;
+ #pwm-cells = <3>;
+ };
+
+ };
+
+ panel: panel {
+ compatible = "logictechnologies,lttd800480070-l2rt",
"simple-panel";
+ backlight = <&backlight>;
+ power-supply = <&panel_reg>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ panel_input: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&lcdc_panel_output>;
+ };
+ };
+ };
--
2.12.0
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