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ARM: dts: imx6ull-dhcor: Set and limit the mode for PMIC buck 1, 2 and 3

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According to Renesas Electronics (formerly Dialog Semiconductor), the
standard AUTO mode of the PMIC DA9061 can lead to stability problems
depending on the hardware revision. It is recommended to set a defined
mode such as PFM or PWM permanently. So set and limit the mode for
buck 1, 2 and 3 to a fixed one.

Fixes: 611b6c891e ("ARM: dts: imx6ull-dhcom: Add DH electronics DHCOM i.MX6ULL SoM and PDK2 board")
Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Christoph Niedermaier 2023-05-02 13:14:24 +02:00 committed by Shawn Guo
parent f161cea5a2
commit 892943d772
1 changed files with 7 additions and 0 deletions
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7
arch/arm/boot/dts/imx6ull-dhcor-som.dtsi
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@ -8,6 +8,7 @@
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>
#include <dt-bindings/pwm/pwm.h>
#include <dt-bindings/regulator/dlg,da9063-regulator.h>
#include "imx6ull.dtsi"
/ {
@ -84,16 +85,20 @@ onkey {
regulators {
vdd_soc_in_1v4: buck1 {
regulator-allowed-modes = <DA9063_BUCK_MODE_SLEEP>; /* PFM */
regulator-always-on;
regulator-boot-on;
regulator-initial-mode = <DA9063_BUCK_MODE_SLEEP>;
regulator-max-microvolt = <1400000>;
regulator-min-microvolt = <1400000>;
regulator-name = "vdd_soc_in_1v4";
};
vcc_3v3: buck2 {
regulator-allowed-modes = <DA9063_BUCK_MODE_SYNC>; /* PWM */
regulator-always-on;
regulator-boot-on;
regulator-initial-mode = <DA9063_BUCK_MODE_SYNC>;
regulator-max-microvolt = <3300000>;
regulator-min-microvolt = <3300000>;
regulator-name = "vcc_3v3";
@ -106,8 +111,10 @@ vcc_3v3: buck2 {
* the voltage is set to 1.5V.
*/
vcc_ddr_1v35: buck3 {
regulator-allowed-modes = <DA9063_BUCK_MODE_SYNC>; /* PWM */
regulator-always-on;
regulator-boot-on;
regulator-initial-mode = <DA9063_BUCK_MODE_SYNC>;
regulator-max-microvolt = <1500000>;
regulator-min-microvolt = <1500000>;
regulator-name = "vcc_ddr_1v35";