Similar to FIMD and Exynos5433's DECON, the Exynos7 DECON hardware:
- May optionally require an IOMMU to initialize a display region.
- Outputs image data to another block, say an MIC or a DSI master.
If an IOMMU is present, it may also require to access the reserved
framebuffer region.
Document these bindings in the devicetree schema.
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
---
.../display/samsung/samsung,exynos7-decon.yaml | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/samsung/samsung,exynos7-decon.yaml b/Documentation/devicetree/bindings/display/samsung/samsung,exynos7-decon.yaml
index 53916e4c95d8c0369138941a556c23f5d42fbd39..14b954718008e06aa1627fcd116a61927ce29e99 100644
--- a/Documentation/devicetree/bindings/display/samsung/samsung,exynos7-decon.yaml
+++ b/Documentation/devicetree/bindings/display/samsung/samsung,exynos7-decon.yaml
@@ -80,6 +80,21 @@ properties:
- const: vsync
- const: lcd_sys
+ iommus:
+ maxItems: 1
+
+ memory-region:
+ maxItems: 1
+ description:
+ A phandle to a node describing a reserved framebuffer memory region.
+ For example, the splash memory region set up by the bootloader.
+
+ port:
+ $ref: /schemas/graph.yaml#/properties/port
+ description:
+ Output port which is connected to either a Mobile Image Compressor
+ (MIC) or a DSI Master device.
+
power-domains:
maxItems: 1
@@ -92,6 +107,7 @@ required:
- clock-names
- interrupts
- interrupt-names
+ - port
- reg
additionalProperties: false
@@ -118,4 +134,9 @@ examples:
"decon0_vclk";
pinctrl-0 = <&lcd_clk &pwm1_out>;
pinctrl-names = "default";
+ port {
+ decon_to_dsi: endpoint {
+ remote-endpoint = <&dsi_to_decon>;
+ };
+ };
};
--
2.49.0