| Device-Tree bindings for Samsung Exynos SoC display controller (DECON) |
| |
| DECON (Display and Enhancement Controller) is the Display Controller for the |
| Exynos 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,exynos5433-decon"; |
| - reg: physical base address and length of the DECON registers set. |
| - interrupts: should contain a list of all DECON IP block interrupts in the |
| order: VSYNC, LCD_SYSTEM. The interrupt specifier format |
| depends on the interrupt controller used. |
| - interrupt-names: should contain the interrupt names: "vsync", "lcd_sys" |
| in the same order as they were listed in the interrupts |
| property. |
| - 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 "aclk_decon", "aclk_smmu_decon0x", |
| "aclk_xiu_decon0x", "pclk_smmu_decon0x", clk_decon_vclk", |
| "sclk_decon_eclk" |
| - ports: contains a port which is connected to mic node. address-cells and |
| size-cells must 1 and 0, respectively. |
| - port: contains an endpoint node which is connected to the endpoint in the mic |
| node. The reg value muset be 0. |
| - i80-if-timings: specify whether the panel which is connected to decon uses |
| i80 lcd interface or mipi video interface. This node contains |
| no timing information as that of fimd does. Because there is |
| no register in decon to specify i80 interface timing value, |
| it is not needed, but make it remain to use same kind of node |
| in fimd and exynos7 decon. |
| |
| Example: |
| SoC specific DT entry: |
| decon: decon@13800000 { |
| compatible = "samsung,exynos5433-decon"; |
| reg = <0x13800000 0x2104>; |
| clocks = <&cmu_disp CLK_ACLK_DECON>, <&cmu_disp CLK_ACLK_SMMU_DECON0X>, |
| <&cmu_disp CLK_ACLK_XIU_DECON0X>, |
| <&cmu_disp CLK_PCLK_SMMU_DECON0X>, |
| <&cmu_disp CLK_SCLK_DECON_VCLK>, |
| <&cmu_disp CLK_SCLK_DECON_ECLK>; |
| clock-names = "aclk_decon", "aclk_smmu_decon0x", "aclk_xiu_decon0x", |
| "pclk_smmu_decon0x", "sclk_decon_vclk", "sclk_decon_eclk"; |
| interrupt-names = "vsync", "lcd_sys"; |
| interrupts = <0 202 0>, <0 203 0>; |
| |
| ports { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| port@0 { |
| reg = <0>; |
| decon_to_mic: endpoint { |
| remote-endpoint = <&mic_to_decon>; |
| }; |
| }; |
| }; |
| }; |
| |
| Board specific DT entry: |
| &decon { |
| i80-if-timings { |
| }; |
| }; |