[PATCH V2] dt-bindings: bridge: samsung-dsim: Make some flags optional

From: Adam Ford
Date: Sun May 28 2023 - 09:27:45 EST

In the event a device is connected to the samsung-dsim
controller that doesn't support the burst-clock, the
driver is able to get the requested pixel clock from the
attached device or bridge. In these instances, the
samsung,burst-clock-frequency isn't needed, so remove
it from the required list.

The pll-clock frequency can be set by the device tree entry
for samsung,pll-clock-frequency, but in some cases, the
pll-clock may have the same clock rate as sclk_mipi clock.
If they are equal, this flag is not needed since the driver
will use the sclk_mipi rate as a fallback.

Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
V2: Split from driver series. Re-word updates for burst
and pll-clock frequency.

diff --git a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
index 9f61ebdfefa8..06b6c44d4641 100644
--- a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
@@ -70,7 +70,9 @@ properties:
$ref: /schemas/types.yaml#/definitions/uint32
- DSIM high speed burst mode frequency.
+ DSIM high speed burst mode frequency. If absent,
+ the pixel clock from the attached device or bridge
+ will be used instead.

$ref: /schemas/types.yaml#/definitions/uint32
@@ -80,7 +82,8 @@ properties:
$ref: /schemas/types.yaml#/definitions/uint32
- DSIM oscillator clock frequency.
+ DSIM oscillator clock frequency. If absent, the clock frequency
+ of sclk_mipi will be used instead.

maxItems: 1
@@ -134,9 +137,7 @@ required:
- compatible
- interrupts
- reg
- - samsung,burst-clock-frequency
- samsung,esc-clock-frequency
- - samsung,pll-clock-frequency

- $ref: ../dsi-controller.yaml#