The new STMicroelectronics SoC features a display controller similar to
the one used in previous SoCs. Because there is additional registers,
and different mandatory clocks it is incompatible with existing IPs. On
STM32MP251, the device only needs two clocks while on STM32MP255 it
needs four.
Add the new names to the list of compatible string and handle each
quirks accordingly.
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-...@foss.st.com>
---
.../devicetree/bindings/display/st,stm32-ltdc.yaml | 52 +++++++++++++++++++++-
1 file changed, 50 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml
b/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml
index
d6ea4d62a2cfae26353c9f20a326a4329fed3a2f..1233345a16307532ea08d3686d194b486f897ea9
100644
--- a/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml
+++ b/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml
@@ -12,7 +12,10 @@ maintainers:
properties:
compatible:
- const: st,stm32-ltdc
+ enum:
+ - st,stm32-ltdc
+ - st,stm32mp251-ltdc
+ - st,stm32mp255-ltdc
reg:
maxItems: 1
@@ -24,11 +27,16 @@ properties:
minItems: 1
clocks:
- maxItems: 1
+ minItems: 1
+ maxItems: 4
clock-names:
items:
- const: lcd
+ - const: bus
+ - const: ref
+ - const: lvds
+ minItems: 1
resets:
maxItems: 1
@@ -51,6 +59,46 @@ required:
- resets
- port
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - st,stm32-ltdc
+ then:
+ properties:
+ clocks:
+ maxItems: 1
+ clock-names:
+ maxItems: 1
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - st,stm32mp251-ltdc
+ then:
+ properties:
+ clocks:
+ minItems: 2
+ maxItems: 2
+ clock-names:
+ minItems: 2
+ maxItems: 2
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - st,stm32mp255-ltdc
+ then:
+ properties:
+ clocks:
+ minItems: 4
+ clock-names:
+ minItems: 4
+
additionalProperties: false
examples:
--
2.25.1
