projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d10715be PM |
1 | * ARM PrimeCell Color LCD Controller PL110/PL111 |
| 2 | ||
| 3 | See also Documentation/devicetree/bindings/arm/primecell.txt | |
| 4 | ||
| 5 | Required properties: | |
| 6 | ||
| 7 | - compatible: must be one of: | |
| 8 | "arm,pl110", "arm,primecell" | |
| 9 | "arm,pl111", "arm,primecell" | |
| 10 | ||
| 11 | - reg: base address and size of the control registers block | |
| 12 | ||
| 13 | - interrupt-names: either the single entry "combined" representing a | |
| 14 | combined interrupt output (CLCDINTR), or the four entries | |
| 15 | "mbe", "vcomp", "lnbu", "fuf" representing the individual | |
| 16 | CLCDMBEINTR, CLCDVCOMPINTR, CLCDLNBUINTR, CLCDFUFINTR interrupts | |
| 17 | ||
| 18 | - interrupts: contains an interrupt specifier for each entry in | |
| 19 | interrupt-names | |
| 20 | ||
| 21 | - clock-names: should contain "clcdclk" and "apb_pclk" | |
| 22 | ||
| 23 | - clocks: contains phandle and clock specifier pairs for the entries | |
| 24 | in the clock-names property. See | |
| 25 | Documentation/devicetree/binding/clock/clock-bindings.txt | |
| 26 | ||
| 27 | Optional properties: | |
| 28 | ||
| 29 | - memory-region: phandle to a node describing memory (see | |
| 30 | Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt) | |
| 31 | to be used for the framebuffer; if not present, the framebuffer | |
| 32 | may be located anywhere in the memory | |
| 33 | ||
| 34 | - max-memory-bandwidth: maximum bandwidth in bytes per second that the | |
| 35 | cell's memory interface can handle; if not present, the memory | |
| 36 | interface is fast enough to handle all possible video modes | |
| 37 | ||
| 38 | Required sub-nodes: | |
| 39 | ||
| 40 | - port: describes LCD panel signals, following the common binding | |
| 41 | for video transmitter interfaces; see | |
| 42 | Documentation/devicetree/bindings/media/video-interfaces.txt; | |
| 43 | when it is a TFT panel, the port's endpoint must define the | |
| 44 | following property: | |
| 45 | ||
| 46 | - arm,pl11x,tft-r0g0b0-pads: an array of three 32-bit values, | |
| 47 | defining the way CLD pads are wired up; first value | |
| 48 | contains index of the "CLD" external pin (pad) used | |
| 49 | as R0 (first bit of the red component), second value | |
| 50 | index of the pad used as G0, third value index of the | |
| 51 | pad used as B0, see also "LCD panel signal multiplexing | |
| 52 | details" paragraphs in the PL110/PL111 Technical | |
| 53 | Reference Manuals; this implicitly defines available | |
| 54 | color modes, for example: | |
| 55 | - PL111 TFT 4:4:4 panel: | |
| 56 | arm,pl11x,tft-r0g0b0-pads = <4 15 20>; | |
| 57 | - PL110 TFT (1:)5:5:5 panel: | |
| 58 | arm,pl11x,tft-r0g0b0-pads = <1 7 13>; | |
| 59 | - PL111 TFT (1:)5:5:5 panel: | |
| 60 | arm,pl11x,tft-r0g0b0-pads = <3 11 19>; | |
| 61 | - PL111 TFT 5:6:5 panel: | |
| 62 | arm,pl11x,tft-r0g0b0-pads = <3 10 19>; | |
| 63 | - PL110 and PL111 TFT 8:8:8 panel: | |
| 64 | arm,pl11x,tft-r0g0b0-pads = <0 8 16>; | |
| 65 | - PL110 and PL111 TFT 8:8:8 panel, R & B components swapped: | |
| 66 | arm,pl11x,tft-r0g0b0-pads = <16 8 0>; | |
| 67 | ||
| 68 | ||
| 69 | Example: | |
| 70 | ||
| 71 | clcd@10020000 { | |
| 72 | compatible = "arm,pl111", "arm,primecell"; | |
| 73 | reg = <0x10020000 0x1000>; | |
| 74 | interrupt-names = "combined"; | |
| 75 | interrupts = <0 44 4>; | |
| 76 | clocks = <&oscclk1>, <&oscclk2>; | |
| 77 | clock-names = "clcdclk", "apb_pclk"; | |
| 78 | max-memory-bandwidth = <94371840>; /* Bps, 1024x768@60 16bpp */ | |
| 79 | ||
| 80 | port { | |
| 81 | clcd_pads: endpoint { | |
| 82 | remote-endpoint = <&clcd_panel>; | |
| 83 | arm,pl11x,tft-r0g0b0-pads = <0 8 16>; | |
| 84 | }; | |
| 85 | }; | |
| 86 | ||
| 87 | }; | |
| 88 | ||
| 89 | panel { | |
| 90 | compatible = "panel-dpi"; | |
| 91 | ||
| 92 | port { | |
| 93 | clcd_panel: endpoint { | |
| 94 | remote-endpoint = <&clcd_pads>; | |
| 95 | }; | |
| 96 | }; | |
| 97 | ||
| 98 | panel-timing { | |
| 99 | clock-frequency = <25175000>; | |
| 100 | hactive = <640>; | |
| 101 | hback-porch = <40>; | |
| 102 | hfront-porch = <24>; | |
| 103 | hsync-len = <96>; | |
| 104 | vactive = <480>; | |
| 105 | vback-porch = <32>; | |
| 106 | vfront-porch = <11>; | |
| 107 | vsync-len = <2>; | |
| 108 | }; | |
| 109 | }; |