Commit 5149616e authored Aug 01, 2017 by Jerome Brunet Committed by Kevin Hilman Aug 01, 2017

ARM64: dts: meson-gxbb: p20x: add card regulator settle times



Changing the card voltage on the p200 is not instantaneous, especially
when switching from 3.3v to 1.8v.

I take at least 70ms 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: ef8d2ffe ("ARM64: dts: meson-gxbb: add MMC support")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

parent 7e8634e8

arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi

+3 −0

Original line number	Diff line number	Diff line
		@@ -84,6 +84,9 @@
		/* Based on P200 schematics, signal CARD_1.8V/3.3V_CTR */
		states = <1800000 0
		3300000 1>;

		regulator-settling-time-up-us = <10000>;
		regulator-settling-time-down-us = <150000>;
		};

		vddio_boot: regulator-vddio_boot {