Re: [resend PATCH v6 01/12] dt-bindings: display: mediatek: Add mmsys binding description

On 09/12/2019 06:12, CK Hu wrote:

Hi, Matthias:

On Sat, 2019-12-07 at 23:47 +0100, matthias.bgg@kernel.org wrote:

quoted

From: Matthias Brugger <mbrugger@suse.com>

The MediaTek DRM has a block called mmsys, which sets
the routing and enalbes the different blocks.
This patch adds one line for the mmsys bindings description.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
 .../display/mediatek/mediatek,disp.txt        | 28 ++++++++++---------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt
index 8469de510001..c71c8a4b73ff 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt

@@ -27,20 +27,22 @@ Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt.
 
 Required properties (all function blocks):
 - compatible: "mediatek,<chip>-disp-<function>", one of
-	"mediatek,<chip>-disp-ovl"   - overlay (4 layers, blending, csc)
-	"mediatek,<chip>-disp-rdma"  - read DMA / line buffer
-	"mediatek,<chip>-disp-wdma"  - write DMA
-	"mediatek,<chip>-disp-color" - color processor
-	"mediatek,<chip>-disp-aal"   - adaptive ambient light controller
-	"mediatek,<chip>-disp-gamma" - gamma correction
-	"mediatek,<chip>-disp-merge" - merge streams from two RDMA sources
-	"mediatek,<chip>-disp-split" - split stream to two encoders
-	"mediatek,<chip>-disp-ufoe"  - data compression engine
-	"mediatek,<chip>-dsi"        - DSI controller, see mediatek,dsi.txt
-	"mediatek,<chip>-dpi"        - DPI controller, see mediatek,dpi.txt
-	"mediatek,<chip>-disp-mutex" - display mutex
-	"mediatek,<chip>-disp-od"    - overdrive
+	"mediatek,<chip>-disp-ovl"		- overlay (4 layers, blending, csc)

This patch conflicts with 5.5-rc, please resend this patch base on
5.5-rc1.

quoted

+	"mediatek,<chip>-disp-rdma"		- read DMA / line buffer
+	"mediatek,<chip>-disp-wdma"		- write DMA
+	"mediatek,<chip>-disp-color"		- color processor
+	"mediatek,<chip>-disp-aal"		- adaptive ambient light controller
+	"mediatek,<chip>-disp-gamma"		- gamma correction
+	"mediatek,<chip>-disp-merge"		- merge streams from two RDMA sources
+	"mediatek,<chip>-disp-split"		- split stream to two encoders
+	"mediatek,<chip>-disp-ufoe"		- data compression engine
+	"mediatek,<chip>-dsi"			- DSI controller, see mediatek,dsi.txt
+	"mediatek,<chip>-dpi"			- DPI controller, see mediatek,dpi.txt
+	"mediatek,<chip>-disp-mutex"		- display mutex
+	"mediatek,<chip>-disp-od"		- overdrive
+	"mediatek,<chip>-mmsys", "syscon"	- provide clocks and components management
   the supported chips are mt2701, mt2712 and mt8173.

The original binding document for mmsys is in [1], I think we should not
define it in duplicate. Maybe you could remove the original document.

[1]
https://www.kernel.org/doc/Documentation/devicetree/bindings/arm/mediatek/mediatek%2Cmmsys.txt

I think we should keep it, as it describes some requirements that are otherwise
lost. I'll adapt the  mmsys description and add a hint to it, like we do for dsi
and dpi.

Regards,
Matthias

Regards,
CK

quoted

+
 - reg: Physical base address and length of the function block register space
 - interrupts: The interrupt signal from the function block (required, except for
   merge and split function blocks).

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