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| author | Jerome Brunet <jbrunet@baylibre.com> | 2017-08-01 17:22:24 +0200 |
|---|---|---|
| committer | Kevin Hilman <khilman@baylibre.com> | 2017-08-01 12:46:45 -0700 |
| commit | 5149616e7a4ef4eae19cdbfe5e21143d5052b51d (patch) | |
| tree | 11136c78a848cb40eb807eb262f1c57d0b959b65 /arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi | |
| parent | 7e8634e821e1867aa13c25853ade18b37bfb8740 (diff) | |
| download | blackbird-obmc-linux-5149616e7a4ef4eae19cdbfe5e21143d5052b51d.tar.gz blackbird-obmc-linux-5149616e7a4ef4eae19cdbfe5e21143d5052b51d.zip | |
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: ef8d2ffedf18 ("ARM64: dts: meson-gxbb: add MMC support")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Diffstat (limited to 'arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi')
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi index d904deb1018c..58b32f272a0e 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi @@ -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 { |
