From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-amlogic@lists.infradead.org, khilman@baylibre.com,
mjourdan@baylibre.com, robh+dt@kernel.org, mark.rutland@arm.com,
devicetree@vger.kernel.org
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/5] dt-bindings: soc: amlogic: canvas: document support for Meson8/8b/8m2
Date: Mon, 20 May 2019 21:43:49 +0200 [thread overview]
Message-ID: <20190520194353.24445-2-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20190520194353.24445-1-martin.blumenstingl@googlemail.com>
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(-)
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:
--
2.21.0
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next prev parent reply other threads:[~2019-05-20 19:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-20 19:43 [PATCH v2 0/5] 32-bit Meson: add the canvas module Martin Blumenstingl
2019-05-20 19:43 ` Martin Blumenstingl [this message]
2019-05-21 11:26 ` [PATCH v2 1/5] dt-bindings: soc: amlogic: canvas: document support for Meson8/8b/8m2 Maxime Jourdan
2019-05-20 19:43 ` [PATCH v2 2/5] soc: amlogic: canvas: add support for Meson8, Meson8b and Meson8m2 Martin Blumenstingl
2019-05-21 8:07 ` Maxime Jourdan
2019-05-20 19:43 ` [PATCH v2 3/5] ARM: dts: meson8: add the canvas module Martin Blumenstingl
2019-05-20 19:43 ` [PATCH v2 4/5] ARM: dts: meson8m2: update the offset of " Martin Blumenstingl
2019-05-20 19:43 ` [PATCH v2 5/5] ARM: dts: meson8b: add " Martin Blumenstingl
2019-05-23 1:21 ` [PATCH v2 0/5] 32-bit Meson: " Kevin Hilman
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