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authorJakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>2018-12-18 11:22:51 +0100
committerJakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>2018-12-18 11:22:51 +0100
commit38c199fdceee81283adaebc3f89cc376621a349f (patch)
treeca10550dfa1491fd0d96ec3c8909ebcdc6d4b271
parentea93d9811089873ab8608702a6d724df673aa2c1 (diff)
rk3399-puma.dts: disable dmc
RAM frequency scaling causes instability with 4GB RAM configurations and causes performance problems with video processing workloads that do lots of DMA. Disable it for now and trade power consumption for performance and determinism.
-rw-r--r--arch/arm64/boot/dts/rockchip/rk3399-puma.dts2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-puma.dts b/arch/arm64/boot/dts/rockchip/rk3399-puma.dts
index d2304dd611de..0752339bab79 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-puma.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-puma.dts
@@ -1018,7 +1018,7 @@
/* Dynamic Memory Controller */
&dmc {
operating-points-v2 = <&dmc_opp_table>;
- status = "okay";
+ status = "disabled";
center-supply = <&vdd_center>;
upthreshold = <20>;
downdifferential = <10>;