Commit 9734a700 authored by Laurent Pinchart's avatar Laurent Pinchart

dt-bindings: display: renesas: lvds: Add EXTAL and DU_DOTCLKIN clocks

On the D3 and E3 SoCs, the LVDS encoder can derive its internal pixel
clock from an externally supplied clock, either through the EXTAL pin or
through one of the DU_DOTCLKINx pins. Add corresponding clocks to the DT
bindings.

To retain backward compatibility with DT that don't specify the
clock-names property, the functional clock must always be specified
first, and the clock-names property is optional when only the functional
clock is specified.
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: default avatarJacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: default avatarUlrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: default avatarKieran Bingham <kieran.bingham+renesas@ideasonboard.com>
parent f9c32db1
...@@ -19,7 +19,17 @@ Required properties: ...@@ -19,7 +19,17 @@ Required properties:
- "renesas,r8a77995-lvds" for R8A77995 (R-Car D3) compatible LVDS encoders - "renesas,r8a77995-lvds" for R8A77995 (R-Car D3) compatible LVDS encoders
- reg: Base address and length for the memory-mapped registers - reg: Base address and length for the memory-mapped registers
- clocks: A phandle + clock-specifier pair for the functional clock - clocks: A list of phandles + clock-specifier pairs, one for each entry in
the clock-names property.
- clock-names: Name of the clocks. This property is model-dependent.
- The functional clock, which mandatory for all models, shall be listed
first, and shall be named "fck".
- On R8A77990 and R8A77995, the LVDS encoder can use the EXTAL or
DU_DOTCLKINx clocks. Those clocks are optional. When supplied they must be
named "extal" and "dclkin.x" respectively, with "x" being the DU_DOTCLKIN
numerical index.
- When the clocks property only contains the functional clock, the
clock-names property may be omitted.
- resets: A phandle + reset specifier for the module reset - resets: A phandle + reset specifier for the module reset
Required nodes: Required nodes:
......
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