From: Hans de Goede Date: Mon, 19 Jan 2015 13:01:17 +0000 (+0100) Subject: ARM: dts: sun4i: Add simplefb node with de_fe0-de_be0-lcd0-hdmi pipeline X-Git-Tag: v3.19-rc7~1^2~3^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8cedd6628472aa2d8f2f54dfcc36633e46a59db8;p=platform%2Fkernel%2Flinux-exynos.git ARM: dts: sun4i: Add simplefb node with de_fe0-de_be0-lcd0-hdmi pipeline Testing has shown that on sun4i the display backend engine does not have deep enough fifo-s causing flickering / tearing in full-hd mode due to fifo underruns. This can be avoided by letting the display frontend engine do the dma from memory, and then letting it feed the data directly into the backend unmodified, as the frontend does have deep enough fifo-s. Note since u-boot-v2015.01 has been released using the de_be0-lcd0-hdmi pipeline on sun4i, we need to keep that one around too (unfortunately). Signed-off-by: Hans de Goede Signed-off-by: Maxime Ripard --- diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi index e342230..3b25de8 100644 --- a/arch/arm/boot/dts/sun4i-a10.dtsi +++ b/arch/arm/boot/dts/sun4i-a10.dtsi @@ -39,6 +39,14 @@ <&ahb_gates 44>; status = "disabled"; }; + + framebuffer@1 { + compatible = "allwinner,simple-framebuffer", "simple-framebuffer"; + allwinner,pipeline = "de_fe0-de_be0-lcd0-hdmi"; + clocks = <&pll5 1>, <&ahb_gates 36>, <&ahb_gates 43>, + <&ahb_gates 44>, <&ahb_gates 46>; + status = "disabled"; + }; }; cpus {