Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / video / exynos7-decon.txt

diff --git a/kernel/Documentation/devicetree/bindings/video/exynos7-decon.txt b/kernel/Documentation/devicetree/bindings/video/exynos7-decon.txt
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+Device-Tree bindings for Samsung Exynos7 SoC display controller (DECON)
+
+DECON (Display and Enhancement Controller) is the Display Controller for the
+Exynos7 series of SoCs which transfers the image data from a video memory
+buffer to an external LCD interface.
+
+Required properties:
+- compatible: value should be "samsung,exynos7-decon";
+
+- reg: physical base address and length of the DECON registers set.
+
+- interrupt-parent: should be the phandle of the decon controller's
+               parent interrupt controller.
+
+- interrupts: should contain a list of all DECON IP block interrupts in the
+                order: FIFO Level, VSYNC, LCD_SYSTEM. The interrupt specifier
+                format depends on the interrupt controller used.
+
+- interrupt-names: should contain the interrupt names: "fifo", "vsync",
+       "lcd_sys", in the same order as they were listed in the interrupts
+        property.
+
+- pinctrl-0: pin control group to be used for this controller.
+
+- pinctrl-names: must contain a "default" entry.
+
+- clocks: must include clock specifiers corresponding to entries in the
+         clock-names property.
+
+- clock-names: list of clock names sorted in the same order as the clocks
+               property. Must contain "pclk_decon0", "aclk_decon0",
+              "decon0_eclk", "decon0_vclk".
+- i80-if-timings: timing configuration for lcd i80 interface support.
+
+Optional Properties:
+- samsung,power-domain: a phandle to DECON power domain node.
+- display-timings: timing settings for DECON, as described in document [1].
+               Can be used in case timings cannot be provided otherwise
+               or to override timings provided by the panel.
+
+[1]: Documentation/devicetree/bindings/video/display-timing.txt
+
+Example:
+
+SoC specific DT entry:
+
+       decon@13930000 {
+               compatible = "samsung,exynos7-decon";
+               interrupt-parent = <&combiner>;
+               reg = <0x13930000 0x1000>;
+               interrupt-names = "lcd_sys", "vsync", "fifo";
+               interrupts = <0 188 0>, <0 189 0>, <0 190 0>;
+               clocks = <&clock_disp PCLK_DECON_INT>,
+                        <&clock_disp ACLK_DECON_INT>,
+                        <&clock_disp SCLK_DECON_INT_ECLK>,
+                        <&clock_disp SCLK_DECON_INT_EXTCLKPLL>;
+               clock-names = "pclk_decon0", "aclk_decon0", "decon0_eclk",
+                               "decon0_vclk";
+               status = "disabled";
+       };
+
+Board specific DT entry:
+
+       decon@13930000 {
+               pinctrl-0 = <&lcd_clk &pwm1_out>;
+               pinctrl-names = "default";
+               status = "okay";
+       };