This is a note to let you know that I've just added the patch titled
ARM: dts: imx6ull-dhcor: Set and limit the mode for PMIC buck 1, 2 and 3
to the 6.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-dts-imx6ull-dhcor-set-and-limit-the-mode-for-pmi.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 13ccf736fe79f6fda3afce943dc64e202c10015e
Author: Christoph Niedermaier <cniedermaier@xxxxxxxxxxxxxxxxxx>
Date: Tue May 2 13:14:24 2023 +0200
ARM: dts: imx6ull-dhcor: Set and limit the mode for PMIC buck 1, 2 and 3
[ Upstream commit 892943d7729bbfb2edeed9e323eba9a5cec21c49 ]
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: 611b6c891e40 ("ARM: dts: imx6ull-dhcom: Add DH electronics DHCOM i.MX6ULL SoM and PDK2 board")
Signed-off-by: Christoph Niedermaier <cniedermaier@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Marek Vasut <marex@xxxxxxx>
Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm/boot/dts/imx6ull-dhcor-som.dtsi b/arch/arm/boot/dts/imx6ull-dhcor-som.dtsi
index 5882c7565f649..32a6022625d97 100644
--- a/arch/arm/boot/dts/imx6ull-dhcor-som.dtsi
+++ b/arch/arm/boot/dts/imx6ull-dhcor-som.dtsi
@@ -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";
