eaw/u-boot
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

rockchip: dts: rk3399-puma: update usbhub_enable regulator

Browse Source 
To correctly model the usbhub_enable regulator for U-Boot, we need
to change the settings to:
 * the GPIO polarity is GPIO_ACTIVE_LOW
 * should be set to inactive (enable-active-low) when boot-on settings
   are applied
 * it can be changed at runtime (i.e. remove the always-on)

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
This commit is contained in:
Philipp Tomsich
2017-11-06 23:02:52 +01:00
parent df1e6212f9
commit f2a9513168
1 changed files with 1 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/dts/rk3399-puma.dtsi
View File

@@ -94,8 +94,7 @@
compatible = "regulator-fixed";
regulator-name = "usbhub_enable";
enable-active-low;
gpio = <&gpio4 3 GPIO_ACTIVE_HIGH>;
regulator-always-on;
gpio = <&gpio4 3 GPIO_ACTIVE_LOW>;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;