[PATCH v9, 01/11] dt-bindings: mediatek: add rdma-fifo-size description for mt8183 display

Yongqiang Niu yongqiang.niu at mediatek.com
Wed Jan 6 22:11:11 EST 2021


rdma fifo size may be different even in same SOC, add this
property to the corresponding rdma

Signed-off-by: Yongqiang Niu <yongqiang.niu at mediatek.com>
---
 .../devicetree/bindings/display/mediatek/mediatek,disp.txt       | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt
index 33977e1..b07881e 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt
@@ -66,6 +66,14 @@ Required properties (DMA function blocks):
   argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
   for details.
 
+Optional properties (RDMA function blocks):
+- mediatek,rdma-fifo-size: rdma fifo size may be different even in same SOC, add this
+  property to the corresponding rdma
+  the value is the Max value which defined in hardware data sheet.
+  mediatek,rdma-fifo-size of mt8173-rdma0 is 8K
+  mediatek,rdma-fifo-size of mt8183-rdma0 is 5K
+  mediatek,rdma-fifo-size of mt8183-rdma1 is 2K
+
 Examples:
 
 mmsys: clock-controller at 14000000 {
@@ -103,6 +111,7 @@ rdma0: rdma at 1400e000 {
 	clocks = <&mmsys CLK_MM_DISP_RDMA0>;
 	iommus = <&iommu M4U_PORT_DISP_RDMA0>;
 	mediatek,larb = <&larb0>;
+	mediatek,rdma-fifosize = <8192>;
 };
 
 rdma1: rdma at 1400f000 {
-- 
1.8.1.1.dirty


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