| # SPDX-License-Identifier: GPL-2.0 |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/display/lvds.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: LVDS Display Common Properties |
| |
| maintainers: |
| - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> |
| - Thierry Reding <thierry.reding@gmail.com> |
| |
| description: |+ |
| LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple |
| incompatible data link layers have been used over time to transmit image data |
| to LVDS devices. This bindings supports devices compatible with the following |
| specifications. |
| |
| [JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February |
| 1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA) |
| [LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National |
| Semiconductor |
| [VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video |
| Electronics Standards Association (VESA) |
| |
| Device compatible with those specifications have been marketed under the |
| FPD-Link and FlatLink brands. |
| |
| properties: |
| data-mapping: |
| enum: |
| - jeida-18 |
| - jeida-24 |
| - vesa-24 |
| description: | |
| The color signals mapping order. |
| |
| LVDS data mappings are defined as follows. |
| |
| - "jeida-18" - 18-bit data mapping compatible with the [JEIDA], [LDI] and |
| [VESA] specifications. Data are transferred as follows on 3 LVDS lanes. |
| |
| Slot 0 1 2 3 4 5 6 |
| ________________ _________________ |
| Clock \_______________________/ |
| ______ ______ ______ ______ ______ ______ ______ |
| DATA0 ><__G0__><__R5__><__R4__><__R3__><__R2__><__R1__><__R0__>< |
| DATA1 ><__B1__><__B0__><__G5__><__G4__><__G3__><__G2__><__G1__>< |
| DATA2 ><_CTL2_><_CTL1_><_CTL0_><__B5__><__B4__><__B3__><__B2__>< |
| |
| - "jeida-24" - 24-bit data mapping compatible with the [DSIM] and [LDI] |
| specifications. Data are transferred as follows on 4 LVDS lanes. |
| |
| Slot 0 1 2 3 4 5 6 |
| ________________ _________________ |
| Clock \_______________________/ |
| ______ ______ ______ ______ ______ ______ ______ |
| DATA0 ><__G2__><__R7__><__R6__><__R5__><__R4__><__R3__><__R2__>< |
| DATA1 ><__B3__><__B2__><__G7__><__G6__><__G5__><__G4__><__G3__>< |
| DATA2 ><_CTL2_><_CTL1_><_CTL0_><__B7__><__B6__><__B5__><__B4__>< |
| DATA3 ><_CTL3_><__B1__><__B0__><__G1__><__G0__><__R1__><__R0__>< |
| |
| - "vesa-24" - 24-bit data mapping compatible with the [VESA] specification. |
| Data are transferred as follows on 4 LVDS lanes. |
| |
| Slot 0 1 2 3 4 5 6 |
| ________________ _________________ |
| Clock \_______________________/ |
| ______ ______ ______ ______ ______ ______ ______ |
| DATA0 ><__G0__><__R5__><__R4__><__R3__><__R2__><__R1__><__R0__>< |
| DATA1 ><__B1__><__B0__><__G5__><__G4__><__G3__><__G2__><__G1__>< |
| DATA2 ><_CTL2_><_CTL1_><_CTL0_><__B5__><__B4__><__B3__><__B2__>< |
| DATA3 ><_CTL3_><__B7__><__B6__><__G7__><__G6__><__R7__><__R6__>< |
| |
| Control signals are mapped as follows. |
| |
| CTL0: HSync |
| CTL1: VSync |
| CTL2: Data Enable |
| CTL3: 0 |
| |
| data-mirror: |
| type: boolean |
| description: |
| If set, reverse the bit order described in the data mappings below on all |
| data lanes, transmitting bits for slots 6 to 0 instead of 0 to 6. |
| |
| additionalProperties: true |
| |
| ... |
