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[v2,1/5] dt-bindings: soc: amlogic: canvas: document support for Meson8/8b/8m2

Message ID 20190520194353.24445-2-martin.blumenstingl@googlemail.com (mailing list archive)
State Mainlined
Commit a0b2ff531582c510af11b6d548732eb2fd7772ff
Headers show
Series 32-bit Meson: add the canvas module | expand

Commit Message

Martin Blumenstingl May 20, 2019, 7:43 p.m. UTC 
The canvas IP on Meson8, Meson8b and Meson8m2 is similar to the one
found on GXBB and newer. The only known difference is that the older
SoCs cannot configure the "endianness".

Add a compatible string for each of the older SoCs to make sure we won't
be using unsupported features on these SoCs.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 .../devicetree/bindings/soc/amlogic/amlogic,canvas.txt | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

Comments

Maxime Jourdan May 21, 2019, 11:26 a.m. UTC | #1 
On 20/05/2019 21:43, Martin Blumenstingl wrote:
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Maxime Jourdan <mjourdan@baylibre.com>
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Patch

diff --git a/Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt b/Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt
index 436d2106e80d..e876f3ce54f6 100644
--- a/Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt
+++ b/Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt
@@ -2,8 +2,8 @@  Amlogic Canvas
 ================================
 
 A canvas is a collection of metadata that describes a pixel buffer.
-Those metadata include: width, height, phyaddr, wrapping, block mode
-and endianness.
+Those metadata include: width, height, phyaddr, wrapping and block mode.
+Starting with GXBB the endianness can also be described.
 
 Many IPs within Amlogic SoCs rely on canvas indexes to read/write pixel data
 rather than use the phy addresses directly. For instance, this is the case for
@@ -18,7 +18,11 @@  Video Lookup Table
 --------------------------
 
 Required properties:
-- compatible: "amlogic,canvas"
+- compatible: has to be one of:
+		- "amlogic,meson8-canvas", "amlogic,canvas" on Meson8
+		- "amlogic,meson8b-canvas", "amlogic,canvas" on Meson8b
+		- "amlogic,meson8m2-canvas", "amlogic,canvas" on Meson8m2
+		- "amlogic,canvas" on GXBB and newer
 - reg: Base physical address and size of the canvas registers.
 
 Example: