ARM64: dts: meson-gxbb: nanopi-k2: add card regulator settle times

Changing the card voltage on the nanopi-k2 is not instantaneous, especially when switching from 3.3v to 1.8v. It take at least 3ms for the regulator to go from 3.3v to 1.8v. Add margin to that to make sure we don't upset the sdcard during the voltage switch Fixes: 9bc7ffb ("arm64: dts: amlogic: Add NanoPi K2") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
mariux64 · Sep 5, 2017 · 4277656 · 4277656
1 parent 67e7607
commit 4277656
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts
@@ -107,6 +107,9 @@
 
 		states = <3300000 0>,
 		         <1800000 1>;
+
+		regulator-settling-time-up-us = <100>;
+		regulator-settling-time-down-us = <5000>;
 	};
 
 	wifi_32k: wifi-32k {