Hi Biju,
Thank you for the patch.
On Wed, Mar 09, 2022 at 03:11:08PM +0000, Biju Das wrote:
On Renesas RZ/{G2L,V2L} platforms changing the lanes from 4 to 3 at lower frequencies causes display instability. On such platforms, it is better to avoid switching lanes from 4 to 3 as it needs different set of PLL parameter constraints to make the display stable with 3 lanes.
Is this because the PLL calculation code doesn't work properly, or because the hardware can't support this ?
This patch introduces 'adi,disable-lanes-override' property to disable lane switching at lower frequencies.
Signed-off-by: Biju Das biju.das.jz@bp.renesas.com Reviewed-by: Lad Prabhakar prabhakar.mahadev-lad.rj@bp.renesas.com
.../devicetree/bindings/display/bridge/adi,adv7533.yaml | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml b/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml index f36209137c8a..2dc378039d21 100644 --- a/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml +++ b/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml @@ -84,6 +84,11 @@ properties: timings for HDMI output. type: boolean
- adi,disable-lanes-override:
- description:
Disables the overriding lanes at lower frequencies.- type: boolean
- adi,dsi-lanes: description: Number of DSI data lanes connected to the DSI host. $ref: /schemas/types.yaml#/definitions/uint32