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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: ef8d2ffedf ("ARM64: dts: meson-gxbb: add MMC support")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
This commit is contained in:
Jerome Brunet 2017-08-01 17:22:24 +02:00 committed by Kevin Hilman
parent 7e8634e821
commit 5149616e7a
1 changed files with 3 additions and 0 deletions
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arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
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@ -84,6 +84,9 @@ vddio_card: gpio-regulator {
/* 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 {