On 9/3/24 6:27 PM, Fabio Estevam wrote:
From: Fabio Estevam <festevam@xxxxxxx>
i.MX28 has an RX DMA channel associated with the LCDIF controller.
Document the 'dmas' and 'dma-names' properties to fix the following
dt-schema warnings:
lcdif@80030000: 'dma-names', 'dmas' do not match any of the regexes: 'pinctrl-[0-9]+'
Signed-off-by: Fabio Estevam <festevam@xxxxxxx>
---
.../bindings/display/fsl,lcdif.yaml | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
index 0681fc49aa1b..dd462abd61f8 100644
--- a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
+++ b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
@@ -50,6 +50,14 @@ properties:
- const: disp_axi
minItems: 1
+ dmas:
+ items:
+ - description: DMA specifier for the RX DMA channel.
+
+ dma-names:
+ items:
+ - const: rx
+
interrupts:
items:
- description: LCDIF DMA interrupt
@@ -156,6 +164,17 @@ allOf:
interrupts:
maxItems: 1
+ - if:
+ not:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx28-lcdif
This also applies to MX23 , that one also has the support for
command-mode LCDs which are then driven by pumping commands via DMA. I
don't think Linux actually supports this mode of operation, but I do
recall using it some long time ago on MX23.
