43 lines
1.4 KiB
Diff
43 lines
1.4 KiB
Diff
From 0d5d8f373125e5bdf331d8fc579b2cf18171c1c0 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Tue, 3 Aug 2021 11:32:30 +0100
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Subject: [PATCH] overlays: Reduce Pi 4 vc4 CMA size to 320MB
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Reduce the default CMA allocation requested by the vc4-kms-v3d-pi4 and
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vc4-fkms-v3d-pi4 overlays to 320MB.
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Use magic values of the form (<n>*64 - 4)MB to encode default values
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of <n>*64MB, allowing these defaults to be distinguished from values
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set explicitly by the user with the usual overlay parameters (e.g.
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"cma-384"). Only default values will be capped if the Pi RAM is too
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small or the gpu_mem setting too large for it to be viable.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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arch/arm/boot/dts/overlays/vc4-fkms-v3d-pi4-overlay.dts | 2 +-
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arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts | 2 +-
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2 files changed, 2 insertions(+), 2 deletions(-)
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--- a/arch/arm/boot/dts/overlays/vc4-fkms-v3d-pi4-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/vc4-fkms-v3d-pi4-overlay.dts
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@@ -8,7 +8,7 @@
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#include "cma-overlay.dts"
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&frag0 {
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- size = <(512*1024*1024)>;
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+ size = <((320-4)*1024*1024)>;
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};
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/ {
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--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
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@@ -10,7 +10,7 @@
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#include "cma-overlay.dts"
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&frag0 {
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- size = <(512*1024*1024)>;
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+ size = <((320-4)*1024*1024)>;
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};
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/ {
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