ARM: dts: stm32: add stpmic1 support on stm32mp157a dk1 board

This patch adds stpmic1 support on stm32mp157a dk1 board.
The STPMIC1 is a PMIC from STMicroelectronics. The STPMIC1 integrates 10
regulators, 3 power switches, a watchdog and an input for a power on key.
The DMAs are disabled because the PMIC generates a very few traffic and
DMA channels may lack for other usage.

Signed-off-by: Pascal Paillet <p.paillet@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 1b1886d6affa629aa64c5b00511bc0eaa015c099..4bb91abcbcaec711799d94f502b53356ed22bcbb 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -9,6 +9,7 @@
 #include "stm32mp157c.dtsi"
 #include "stm32mp157-pinctrl.dtsi"
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/mfd/st,stpmic1.h>
 
 / {
        model = "STMicroelectronics STM32MP157A-DK1 Discovery Board";
@@ -36,14 +37,6 @@ blue {
                        default-state = "off";
                };
        };
-
-       v3v3: regulator-3v3 {
-               compatible = "regulator-fixed";
-               regulator-name = "v3v3";
-               regulator-min-microvolt = <3300000>;
-               regulator-max-microvolt = <3300000>;
-               regulator-always-on;
-       };
 };
 
 &ethernet0 {
@@ -65,6 +58,155 @@ phy0: ethernet-phy@0 {
        };
 };
 
+
+&i2c4 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c4_pins_a>;
+       i2c-scl-rising-time-ns = <185>;
+       i2c-scl-falling-time-ns = <20>;
+       status = "okay";
+       /* spare dmas for other usage */
+       /delete-property/dmas;
+       /delete-property/dma-names;
+
+       pmic: stpmic@33 {
+               compatible = "st,stpmic1";
+               reg = <0x33>;
+               interrupts-extended = <&gpioa 0 IRQ_TYPE_EDGE_FALLING>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+               status = "okay";
+
+               regulators {
+                       compatible = "st,stpmic1-regulators";
+                       ldo1-supply = <&v3v3>;
+                       ldo3-supply = <&vdd_ddr>;
+                       ldo6-supply = <&v3v3>;
+                       pwr_sw1-supply = <&bst_out>;
+                       pwr_sw2-supply = <&bst_out>;
+
+                       vddcore: buck1 {
+                               regulator-name = "vddcore";
+                               regulator-min-microvolt = <800000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-always-on;
+                               regulator-initial-mode = <0>;
+                               regulator-over-current-protection;
+                       };
+
+                       vdd_ddr: buck2 {
+                               regulator-name = "vdd_ddr";
+                               regulator-min-microvolt = <1350000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-always-on;
+                               regulator-initial-mode = <0>;
+                               regulator-over-current-protection;
+                       };
+
+                       vdd: buck3 {
+                               regulator-name = "vdd";
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                               regulator-always-on;
+                               st,mask-reset;
+                               regulator-initial-mode = <0>;
+                               regulator-over-current-protection;
+                       };
+
+                       v3v3: buck4 {
+                               regulator-name = "v3v3";
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                               regulator-always-on;
+                               regulator-over-current-protection;
+                               regulator-initial-mode = <0>;
+                       };
+
+                       v1v8_audio: ldo1 {
+                               regulator-name = "v1v8_audio";
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <1800000>;
+                               regulator-always-on;
+                               interrupts = <IT_CURLIM_LDO1 0>;
+                       };
+
+                       v3v3_hdmi: ldo2 {
+                               regulator-name = "v3v3_hdmi";
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                               regulator-always-on;
+                               interrupts = <IT_CURLIM_LDO2 0>;
+                       };
+
+                       vtt_ddr: ldo3 {
+                               regulator-name = "vtt_ddr";
+                               regulator-min-microvolt = <500000>;
+                               regulator-max-microvolt = <750000>;
+                               regulator-always-on;
+                               regulator-over-current-protection;
+                       };
+
+                       vdd_usb: ldo4 {
+                               regulator-name = "vdd_usb";
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                               interrupts = <IT_CURLIM_LDO4 0>;
+                       };
+
+                       vdda: ldo5 {
+                               regulator-name = "vdda";
+                               regulator-min-microvolt = <2900000>;
+                               regulator-max-microvolt = <2900000>;
+                               interrupts = <IT_CURLIM_LDO5 0>;
+                               regulator-boot-on;
+                       };
+
+                       v1v2_hdmi: ldo6 {
+                               regulator-name = "v1v2_hdmi";
+                               regulator-min-microvolt = <1200000>;
+                               regulator-max-microvolt = <1200000>;
+                               regulator-always-on;
+                               interrupts = <IT_CURLIM_LDO6 0>;
+                       };
+
+                       vref_ddr: vref_ddr {
+                               regulator-name = "vref_ddr";
+                               regulator-always-on;
+                               regulator-over-current-protection;
+                       };
+
+                        bst_out: boost {
+                               regulator-name = "bst_out";
+                               interrupts = <IT_OCP_BOOST 0>;
+                        };
+
+                       vbus_otg: pwr_sw1 {
+                               regulator-name = "vbus_otg";
+                               interrupts = <IT_OCP_OTG 0>;
+                        };
+
+                        vbus_sw: pwr_sw2 {
+                               regulator-name = "vbus_sw";
+                               interrupts = <IT_OCP_SWOUT 0>;
+                               regulator-active-discharge;
+                        };
+               };
+
+               onkey {
+                       compatible = "st,stpmic1-onkey";
+                       interrupts = <IT_PONKEY_F 0>, <IT_PONKEY_R 0>;
+                       interrupt-names = "onkey-falling", "onkey-rising";
+                       power-off-time-sec = <10>;
+                       status = "okay";
+               };
+
+               watchdog {
+                       compatible = "st,stpmic1-wdt";
+                       status = "disabled";
+               };
+       };
+};
+
 &ipcc {
        status = "okay";
 };