decade-public/rand
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

add sys-kernel/decade-sources

Browse source
This commit is contained in:
Martin Sekera 2021-08-01 01:17:13 +02:00
parent 28256ec9db
commit cdca2294d5
25 changed files with 19550 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

29
sys-kernel/decade-sources/files/board-nanopi-m4v2-dts-fix-stability-issues.patch Normal file
View file

@ -0,0 +1,29 @@
By default rk808's buck regulators switch voltage in multiple 100mV jumps.
This seems to be too much for NanoPi M4V2 and makes it unstable.
Shortening the steps to 50mV (4 multiple of base buck step which is 12.5mV)
makes the NanoPi M4V2 stable.
Tested with multiple hours of running memtester without a single failure.
Signed-off-by: Piotr Szczepanik <piter75@gmail.com>
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
index 2dcaf497c..094440ce3 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
@@ -64,6 +64,10 @@ &gmac {
rx_delay = <0x16>;
};
+&rk808 {
+ max-buck-steps-per-change = <4>;
+};
+
&vcc3v3_sys {
vin-supply = <&vcc5v0_core>;
};
@@ -80,3 +84,4 @@ &vbus_typec {
regulator-always-on;
vin-supply = <&vdd_5v>;
};
+