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Linux/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt

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Diff markup

Differences between /Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt (Architecture i386) and /Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt (Architecture mips)


  1 Device-Tree bindings for tilcdc DRM driver          1 Device-Tree bindings for tilcdc DRM driver
  2                                                     2 
  3 Required properties:                                3 Required properties:
  4  - compatible: value should be one of the foll      4  - compatible: value should be one of the following:
  5     - "ti,am33xx-tilcdc" for AM335x based boar      5     - "ti,am33xx-tilcdc" for AM335x based boards
  6     - "ti,da850-tilcdc" for DA850/AM18x/OMAP-L      6     - "ti,da850-tilcdc" for DA850/AM18x/OMAP-L138 based boards
  7  - interrupts: the interrupt number                 7  - interrupts: the interrupt number
  8  - reg: base address and size of the LCDC devi      8  - reg: base address and size of the LCDC device
  9                                                     9 
 10 Recommended properties:                            10 Recommended properties:
 11  - ti,hwmods: Name of the hwmod associated to      11  - ti,hwmods: Name of the hwmod associated to the LCDC
 12                                                    12 
 13 Optional properties:                               13 Optional properties:
 14  - max-bandwidth: The maximum pixels per secon     14  - max-bandwidth: The maximum pixels per second that the memory
 15    interface / lcd controller combination can      15    interface / lcd controller combination can sustain
 16  - max-width: The maximum horizontal pixel wid     16  - max-width: The maximum horizontal pixel width supported by
 17    the lcd controller.                             17    the lcd controller.
 18  - max-pixelclock: The maximum pixel clock tha     18  - max-pixelclock: The maximum pixel clock that can be supported
 19    by the lcd controller in KHz.                   19    by the lcd controller in KHz.
 20  - blue-and-red-wiring: Recognized values "str     20  - blue-and-red-wiring: Recognized values "straight" or "crossed".
 21    This property deals with the LCDC revision      21    This property deals with the LCDC revision 2 (found on AM335x)
 22    color errata [1].                               22    color errata [1].
 23     - "straight" indicates normal wiring that      23     - "straight" indicates normal wiring that supports RGB565,
 24       BGR888, and XBGR8888 color formats.          24       BGR888, and XBGR8888 color formats.
 25     - "crossed" indicates wiring that has blue     25     - "crossed" indicates wiring that has blue and red wires
 26       crossed. This setup supports BGR565, RGB     26       crossed. This setup supports BGR565, RGB888 and XRGB8888
 27       formats.                                     27       formats.
 28     - If the property is not present or its va     28     - If the property is not present or its value is not recognized
 29       the legacy mode is assumed. This configu     29       the legacy mode is assumed. This configuration supports RGB565,
 30       RGB888 and XRGB8888 formats. However, de     30       RGB888 and XRGB8888 formats. However, depending on wiring, the red
 31       and blue colors are swapped in either 16     31       and blue colors are swapped in either 16 or 24-bit color modes.
 32                                                    32 
 33 Optional nodes:                                    33 Optional nodes:
 34                                                    34 
 35  - port/ports: to describe a connection to an      35  - port/ports: to describe a connection to an external encoder. The
 36    binding follows Documentation/devicetree/bi     36    binding follows Documentation/devicetree/bindings/graph.txt and
 37    supports a single port with a single endpoi     37    supports a single port with a single endpoint.
 38                                                    38 
 39  - See also Documentation/devicetree/bindings/     39  - See also Documentation/devicetree/bindings/display/tilcdc/panel.txt and
 40    Documentation/devicetree/bindings/display/b     40    Documentation/devicetree/bindings/display/bridge/ti,tfp410.yaml for connecting
 41    tfp410 DVI encoder or lcd panel to lcdc         41    tfp410 DVI encoder or lcd panel to lcdc
 42                                                    42 
 43 [1] There is an errata about AM335x color wiri     43 [1] There is an errata about AM335x color wiring. For 16-bit color mode
 44     the wires work as they should (LCD_DATA[0:     44     the wires work as they should (LCD_DATA[0:4] is for Blue[3:7]),
 45     but for 24 bit color modes the wiring of b     45     but for 24 bit color modes the wiring of blue and red components is
 46     crossed and LCD_DATA[0:4] is for Red[3:7]      46     crossed and LCD_DATA[0:4] is for Red[3:7] and LCD_DATA[11:15] is
 47     for Blue[3-7]. For more details see sectio     47     for Blue[3-7]. For more details see section 3.1.1 in AM335x
 48     Silicon Errata:                                48     Silicon Errata:
 49     https://www.ti.com/general/docs/lit/getlit     49     https://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=sprz360
 50                                                    50 
 51 Example:                                           51 Example:
 52                                                    52 
 53         fb: fb@4830e000 {                          53         fb: fb@4830e000 {
 54                 compatible = "ti,am33xx-tilcdc     54                 compatible = "ti,am33xx-tilcdc", "ti,da850-tilcdc";
 55                 reg = <0x4830e000 0x1000>;         55                 reg = <0x4830e000 0x1000>;
 56                 interrupt-parent = <&intc>;        56                 interrupt-parent = <&intc>;
 57                 interrupts = <36>;                 57                 interrupts = <36>;
 58                 ti,hwmods = "lcdc";                58                 ti,hwmods = "lcdc";
 59                                                    59 
 60                 blue-and-red-wiring = "crossed     60                 blue-and-red-wiring = "crossed";
 61                                                    61 
 62                 port {                             62                 port {
 63                         lcdc_0: endpoint {         63                         lcdc_0: endpoint {
 64                                 remote-endpoin     64                                 remote-endpoint = <&hdmi_0>;
 65                         };                         65                         };
 66                 };                                 66                 };
 67         };                                         67         };
 68                                                    68 
 69         tda19988: tda19988 {                       69         tda19988: tda19988 {
 70                 compatible = "nxp,tda998x";        70                 compatible = "nxp,tda998x";
 71                 reg = <0x70>;                      71                 reg = <0x70>;
 72                                                    72 
 73                 pinctrl-names = "default", "of     73                 pinctrl-names = "default", "off";
 74                 pinctrl-0 = <&nxp_hdmi_bonelt_     74                 pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
 75                 pinctrl-1 = <&nxp_hdmi_bonelt_     75                 pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
 76                                                    76 
 77                 port {                             77                 port {
 78                         hdmi_0: endpoint {         78                         hdmi_0: endpoint {
 79                                 remote-endpoin     79                                 remote-endpoint = <&lcdc_0>;
 80                         };                         80                         };
 81                 };                                 81                 };
 82         };                                         82         };
                                                      

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