Commit 892943d7 authored by Christoph Niedermaier's avatar Christoph Niedermaier Committed by Shawn Guo
Browse files

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



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: 611b6c89 ("ARM: dts: imx6ull-dhcom: Add DH electronics DHCOM i.MX6ULL SoM and PDK2 board")
Signed-off-by: default avatarChristoph Niedermaier <cniedermaier@dh-electronics.com>
Reviewed-by: default avatarMarek Vasut <marex@denx.de>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent f161cea5

arch/arm/boot/dts/imx6ull-dhcor-som.dtsi

+7 −0
Original line number Diff line number Diff line
@@ -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 @@ 


		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 @@ 
			 * 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";