Hyungwon Hwang | 77bbd89 | 2015-06-12 21:59:02 +0900 | [diff] [blame] | 1 | Device-Tree bindings for Samsung Exynos SoC mobile image compressor (MIC) |
| 2 | |
| 3 | MIC (mobile image compressor) resides between decon and mipi dsi. Mipi dsi is |
| 4 | not capable to transfer high resoltuion frame data as decon can send. MIC |
| 5 | solves this problem by compressing the frame data by 1/2 before it is |
| 6 | transferred through mipi dsi. The compressed frame data must be uncompressed in |
| 7 | the panel PCB. |
| 8 | |
| 9 | Required properties: |
| 10 | - compatible: value should be "samsung,exynos5433-mic". |
| 11 | - reg: physical base address and length of the MIC registers set and system |
| 12 | register of mic. |
| 13 | - clocks: must include clock specifiers corresponding to entries in the |
| 14 | clock-names property. |
| 15 | - clock-names: list of clock names sorted in the same order as the clocks |
| 16 | property. Must contain "pclk_mic0", "sclk_rgb_vclk_to_mic0". |
| 17 | - samsung,disp-syscon: the reference node for syscon for DISP block. |
| 18 | - ports: contains a port which is connected to decon node and dsi node. |
| 19 | address-cells and size-cells must 1 and 0, respectively. |
| 20 | - port: contains an endpoint node which is connected to the endpoint in the |
| 21 | decon node or dsi node. The reg value must be 0 and 1 respectively. |
| 22 | |
| 23 | Example: |
| 24 | SoC specific DT entry: |
| 25 | mic: mic@13930000 { |
| 26 | compatible = "samsung,exynos5433-mic"; |
| 27 | reg = <0x13930000 0x48>; |
| 28 | clocks = <&cmu_disp CLK_PCLK_MIC0>, |
| 29 | <&cmu_disp CLK_SCLK_RGB_VCLK_TO_MIC0>; |
| 30 | clock-names = "pclk_mic0", "sclk_rgb_vclk_to_mic0"; |
| 31 | samsung,disp-syscon = <&syscon_disp>; |
| 32 | |
| 33 | ports { |
| 34 | #address-cells = <1>; |
| 35 | #size-cells = <0>; |
| 36 | |
| 37 | port@0 { |
| 38 | reg = <0>; |
| 39 | mic_to_decon: endpoint { |
| 40 | remote-endpoint = <&decon_to_mic>; |
| 41 | }; |
| 42 | }; |
| 43 | |
| 44 | port@1 { |
| 45 | reg = <1>; |
| 46 | mic_to_dsi: endpoint { |
| 47 | remote-endpoint = <&dsi_to_mic>; |
| 48 | }; |
| 49 | }; |
| 50 | }; |
| 51 | }; |