Newer revisions of the i.MX8MM EVK are equipped with a different PMIC than
the initial ones (PCA9540 instead of BD71847), which has already been
reflected in 4c07a21e5.
These changes have been reverted implicitly as part of the device tree
re-sync with the Linux kernel done in 24a7a3c1c.
This lead to an inconsistent state: while the device tree describes the old
PMIC again the code in board/freescale/imx8mm_evk/spl.c tries to initialize
the new PMIC:
ret = pmic_get("pca9450@25", &dev);
if (ret == -ENODEV) {
puts("No pmic\n");
return 0;
}
This leads to the expected error message from SPL:
U-Boot SPL 2023.07.02 (Sep 04 2023 - 15:57:57 +0200)
-> No pmic
SEC0: RNG instantiated
WDT: Started watchdog@30280000 with servicing every 1000ms (60s timeout)
Trying to boot from NOR
NOTICE: BL31: v2.2(release):rel_imx_5.4.70_2.3.6-0-g15e8ff164
NOTICE: BL31: Built : 13:51:09, Sep 4 2023
Fix by re-applying the device tree changes from 4c07a21e5.
Signed-off-by: Alexander Koch <ak...@initse.com>
---
arch/arm/dts/imx8mm-evk-u-boot.dtsi | 4 +-
arch/arm/dts/imx8mm-evk.dtsi | 126 ++++++++++++++--------------
2 files changed, 67 insertions(+), 63 deletions(-)
diff --git a/arch/arm/dts/imx8mm-evk-u-boot.dtsi
b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
index 13688ec0d0..1bc7e4a38b 100644
--- a/arch/arm/dts/imx8mm-evk-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
@@ -121,11 +121,11 @@
bootph-pre-ram;
};
-&{/soc@0/bus@30800000/i2c@30a20000/pmic@4b} {
+&{/soc@0/bus@30800000/i2c@30a20000/pca9450@25} {
bootph-pre-ram;
};
-&{/soc@0/bus@30800000/i2c@30a20000/pmic@4b/regulators} {
+&{/soc@0/bus@30800000/i2c@30a20000/pca9450@25/regulators} {
bootph-pre-ram;
};
diff --git a/arch/arm/dts/imx8mm-evk.dtsi b/arch/arm/dts/imx8mm-evk.dtsi
index 7d6317d95b..f2c15bf0ff 100644
--- a/arch/arm/dts/imx8mm-evk.dtsi
+++ b/arch/arm/dts/imx8mm-evk.dtsi
@@ -183,114 +183,118 @@
pinctrl-0 = <&pinctrl_i2c1>;
status = "okay";
- pmic@4b {
- compatible = "rohm,bd71847";
- reg = <0x4b>;
- pinctrl-names = "default";
+ pmic: pca9450@25 {
+ reg = <0x25>;
+ compatible = "nxp,pca9450a";
+ /* PMIC PCA9450 PMIC_nINT GPIO1_IO3 */
pinctrl-0 = <&pinctrl_pmic>;
- interrupt-parent = <&gpio1>;
- interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
- rohm,reset-snvs-powered;
-
- #clock-cells = <0>;
- clocks = <&osc_32k 0>;
- clock-output-names = "clk-32k-out";
+ gpio_intr = <&gpio1 3 GPIO_ACTIVE_LOW>;
regulators {
- buck1_reg: BUCK1 {
- regulator-name = "buck1";
- regulator-min-microvolt = <700000>;
- regulator-max-microvolt = <1300000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pca9450,pmic-buck2-uses-i2c-dvs;
+ /* Run/Standby voltage */
+ pca9450,pmic-buck2-dvs-voltage = <950000>, <850000>;
+
+ buck1_reg: regulator@0 {
+ reg = <0>;
+ regulator-compatible = "buck1";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <2187500>;
regulator-boot-on;
regulator-always-on;
- regulator-ramp-delay = <1250>;
+ regulator-ramp-delay = <3125>;
};
- buck2_reg: BUCK2 {
- regulator-name = "buck2";
- regulator-min-microvolt = <700000>;
- regulator-max-microvolt = <1300000>;
+ buck2_reg: regulator@1 {
+ reg = <1>;
+ regulator-compatible = "buck2";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <2187500>;
regulator-boot-on;
regulator-always-on;
- regulator-ramp-delay = <1250>;
- rohm,dvs-run-voltage = <1000000>;
- rohm,dvs-idle-voltage = <900000>;
+ regulator-ramp-delay = <3125>;
};
- buck3_reg: BUCK3 {
- // BUCK5 in datasheet
- regulator-name = "buck3";
- regulator-min-microvolt = <700000>;
- regulator-max-microvolt = <1350000>;
+ buck3_reg: regulator@2 {
+ reg = <2>;
+ regulator-compatible = "buck3";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <2187500>;
regulator-boot-on;
regulator-always-on;
};
- buck4_reg: BUCK4 {
- // BUCK6 in datasheet
- regulator-name = "buck4";
- regulator-min-microvolt = <3000000>;
- regulator-max-microvolt = <3300000>;
+ buck4_reg: regulator@3 {
+ reg = <3>;
+ regulator-compatible = "buck4";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <3400000>;
regulator-boot-on;
regulator-always-on;
};
- buck5_reg: BUCK5 {
- // BUCK7 in datasheet
- regulator-name = "buck5";
- regulator-min-microvolt = <1605000>;
- regulator-max-microvolt = <1995000>;
+ buck5_reg: regulator@4 {
+ reg = <4>;
+ regulator-compatible = "buck5";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <3400000>;
regulator-boot-on;
regulator-always-on;
};
- buck6_reg: BUCK6 {
- // BUCK8 in datasheet
- regulator-name = "buck6";
- regulator-min-microvolt = <800000>;
- regulator-max-microvolt = <1400000>;
+ buck6_reg: regulator@5 {
+ reg = <5>;
+ regulator-compatible = "buck6";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <3400000>;
regulator-boot-on;
regulator-always-on;
};
- ldo1_reg: LDO1 {
- regulator-name = "ldo1";
+ ldo1_reg: regulator@6 {
+ reg = <6>;
+ regulator-compatible = "ldo1";
regulator-min-microvolt = <1600000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
};
- ldo2_reg: LDO2 {
- regulator-name = "ldo2";
+ ldo2_reg: regulator@7 {
+ reg = <7>;
+ regulator-compatible = "ldo2";
regulator-min-microvolt = <800000>;
- regulator-max-microvolt = <900000>;
+ regulator-max-microvolt = <1150000>;
regulator-boot-on;
regulator-always-on;
};
- ldo3_reg: LDO3 {
- regulator-name = "ldo3";
- regulator-min-microvolt = <1800000>;
+ ldo3_reg: regulator@8 {
+ reg = <8>;
+ regulator-compatible = "ldo3";
+ regulator-min-microvolt = <800000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
};
- ldo4_reg: LDO4 {
- regulator-name = "ldo4";
- regulator-min-microvolt = <900000>;
- regulator-max-microvolt = <1800000>;
+ ldo4_reg: regulator@9 {
+ reg = <9>;
+ regulator-compatible = "ldo4";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
};
- ldo6_reg: LDO6 {
- regulator-name = "ldo6";
- regulator-min-microvolt = <900000>;
- regulator-max-microvolt = <1800000>;
- regulator-boot-on;
- regulator-always-on;
+ ldo5_reg: regulator@10 {
+ reg = <10>;
+ regulator-compatible = "ldo5";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
};
};
};
--
2.42.0
