From cb2ad5e5339c5122166265cea579cc6a356d46de Mon Sep 17 00:00:00 2001 From: Alexey Brodkin Date: Wed, 27 Apr 2016 16:59:50 +0300 Subject: ARC: [axs10x] Specify reserved memory for frame buffer Allocation of a frame buffer memory in a special memory region allows bypassing of so-called IO Coherency aperture which is typically set as a range 0x8z-0xAz. I.e. all data traffic to PGU bypasses IO Coherency block and saves its bandwidth for other peripherals. Even though for AXS101 (which sorts ARC770 CPU) IOC is not an option for a sake of keeping one DT description for the base-board (axs10x_mb.dtsi) we're still defining reserved memory location in the very end of DDR. Signed-off-by: Alexey Brodkin Acked-by: Vineet Gupta Cc: devicetree@vger.kernel.org --- arch/arc/boot/dts/axs10x_mb.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arc/boot/dts/axs10x_mb.dtsi') diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi index 823f15ca68df..64b063d4e996 100644 --- a/arch/arc/boot/dts/axs10x_mb.dtsi +++ b/arch/arc/boot/dts/axs10x_mb.dtsi @@ -283,7 +283,7 @@ encoder-slave = <&adv7511>; clocks = <&pguclk>; clock-names = "pxlclk"; - + memory-region = <&frame_buffer>; port { pgu_output: endpoint { remote-endpoint = <&adv7511_input>; -- cgit v1.2.3-59-g8ed1b