From 590b7795b3dc293a36136a4321ba59da60e5853c Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 6 Oct 2014 15:48:44 +0200 Subject: [PATCH] mfd: Add documentation for atmel-hlcdc DT bindings The HLCDC IP available on some Atmel SoCs (i.e. at91sam9n12, at91sam9x5 family or sama5d3 family) exposes 2 subdevices: - a display controller (controlled by a DRM driver) - a PWM chip This patch adds documentation for atmel-hlcdc DT bindings. Signed-off-by: Boris Brezillon Tested-by: Anthony Harivel Tested-by: Ludovic Desroches Signed-off-by: Lee Jones --- .../devicetree/bindings/mfd/atmel-hlcdc.txt | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt diff --git a/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt b/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt new file mode 100644 index 000000000000..f64de95a8e8b --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt @@ -0,0 +1,51 @@ +Device-Tree bindings for Atmel's HLCDC (High LCD Controller) MFD driver + +Required properties: + - compatible: value should be one of the following: + "atmel,sama5d3-hlcdc" + - reg: base address and size of the HLCDC device registers. + - clock-names: the name of the 3 clocks requested by the HLCDC device. + Should contain "periph_clk", "sys_clk" and "slow_clk". + - clocks: should contain the 3 clocks requested by the HLCDC device. + - interrupts: should contain the description of the HLCDC interrupt line + +The HLCDC IP exposes two subdevices: + - a PWM chip: see ../pwm/atmel-hlcdc-pwm.txt + - a Display Controller: see ../drm/atmel-hlcdc-dc.txt + +Example: + + hlcdc: hlcdc@f0030000 { + compatible = "atmel,sama5d3-hlcdc"; + reg = <0xf0030000 0x2000>; + clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>; + clock-names = "periph_clk","sys_clk", "slow_clk"; + interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>; + status = "disabled"; + + hlcdc-display-controller { + compatible = "atmel,hlcdc-display-controller"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>; + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + + hlcdc_panel_output: endpoint@0 { + reg = <0>; + remote-endpoint = <&panel_input>; + }; + }; + }; + + hlcdc_pwm: hlcdc-pwm { + compatible = "atmel,hlcdc-pwm"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd_pwm>; + #pwm-cells = <3>; + }; + }; -- 2.34.1