diff mbox series

[dev-5.0,v4,6/7] ARM: dts: witherspoon: Enable video engine

Message ID 1554172950-2072-7-git-send-email-eajames@linux.ibm.com
State Accepted, archived
Headers show
Series Enable video engine | expand

Commit Message

Eddie James April 2, 2019, 2:42 a.m. UTC
Enable the video engine and add it's optional reserved memory region.
Use 32MB for the reserved memory since the video engine could need up to
two 1920x1200@32bpp source buffers.

Source buffers: 2 * 1920 * 1200 * 4 = 18432000 bytes
In addition, the V4L2 subsystem will allocate any number of compression
buffers, each at most 1/8th the size of the source buffer.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
 arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts b/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
index 1cdc96d..e09863c 100644
--- a/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
@@ -33,6 +33,13 @@ 
 			compatible = "shared-dma-pool";
 			reusable;
 		};
+
+		video_engine_memory: jpegbuffer {
+			size = <0x02000000>;	/* 32MM */
+			alignment = <0x01000000>;
+			compatible = "shared-dma-pool";
+			reusable;
+		};
 	};
 
 	gpio-keys {
@@ -664,4 +671,9 @@ 
 	status = "okay";
 };
 
+&video {
+	status = "okay";
+	memory-region = <&video_engine_memory>;
+};
+
 #include "ibm-power9-dual.dtsi"