20402106a3
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
76 lines
2.0 KiB
Diff
76 lines
2.0 KiB
Diff
From 5f632f8aba2da50bba83537926a1d3a466ca2a51 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Sun, 24 Apr 2016 17:28:15 +0100
|
|
Subject: [PATCH 302/423] drm/vc4: Add DT parameters to control CMA usage
|
|
|
|
Example: dtoverlay=vc4-kms-v3d,cma-128
|
|
|
|
See: https://github.com/raspberrypi/linux/pull/1431
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
arch/arm/boot/dts/overlays/README | 8 +++--
|
|
arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts | 36 ++++++++++++++++++++++
|
|
2 files changed, 42 insertions(+), 2 deletions(-)
|
|
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -1023,8 +1023,12 @@ Name: vc4-kms-v3d
|
|
Info: Enable Eric Anholt's DRM VC4 HDMI/HVS/V3D driver. Running startx or
|
|
booting to GUI while this overlay is in use will cause interesting
|
|
lockups.
|
|
-Load: dtoverlay=vc4-kms-v3d
|
|
-Params: <None>
|
|
+Load: dtoverlay=vc4-kms-v3d,<param>
|
|
+Params: cma-256 CMA is 256MB, 256MB-aligned (needs 1GB)
|
|
+ cma-192 CMA is 192MB, 256MB-aligned (needs 1GB)
|
|
+ cma-128 CMA is 128MB, 128MB-aligned
|
|
+ cma-96 CMA is 96MB, 128MB-aligned
|
|
+ cma-64 CMA is 64MB, 64MB-aligned
|
|
|
|
|
|
Name: vga666
|
|
--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
|
|
@@ -94,4 +94,40 @@
|
|
bootargs = "cma=256M@256M";
|
|
};
|
|
};
|
|
+
|
|
+ fragment@5 {
|
|
+ target-path = "/chosen";
|
|
+ __dormant__ {
|
|
+ bootargs = "cma=192M@256M";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@6 {
|
|
+ target-path = "/chosen";
|
|
+ __dormant__ {
|
|
+ bootargs = "cma=128M@128M";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@7 {
|
|
+ target-path = "/chosen";
|
|
+ __dormant__ {
|
|
+ bootargs = "cma=96M@128M";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@8 {
|
|
+ target-path = "/chosen";
|
|
+ __dormant__ {
|
|
+ bootargs = "cma=64M@64M";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ cma-256 = <0>,"+4-5-6-7-8";
|
|
+ cma-192 = <0>,"-4+5-6-7-8";
|
|
+ cma-128 = <0>,"-4-5+6-7-8";
|
|
+ cma-96 = <0>,"-4-5-6+7-8";
|
|
+ cma-64 = <0>,"-4-5-6-7+8";
|
|
+ };
|
|
};
|