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| author | Jerome Brunet <jbrunet@baylibre.com> | 2017-08-31 15:52:21 +0200 |
|---|---|---|
| committer | Kevin Hilman <khilman@baylibre.com> | 2017-09-05 21:05:00 +0200 |
| commit | 42776561a1def5d96699574efd7c9cbbd2e0fbc4 (patch) | |
| tree | 63a4c5939b0a107abc2297f65b5573806ebc768f /arch | |
| parent | ARM64: dts: meson: add mmc clk gate pins (diff) | |
| download | linux-42776561a1def5d96699574efd7c9cbbd2e0fbc4.tar.xz linux-42776561a1def5d96699574efd7c9cbbd2e0fbc4.zip | |
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: 9bc7ffb08daf ("arm64: dts: amlogic: Add NanoPi K2")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts | 3 |
1 files changed, 3 insertions, 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 index 60d5f2da6916..acb6797756e5 100644 --- 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 { |