[PATCH v1 5/8] ARM: dts: aspeed: System1: Voltage regulators
Ninad Palsule
ninad at linux.ibm.com
Wed Dec 13 03:40:01 AEDT 2023
This commit adds different voltage regulators.
Tested:
This board is tested using the simics simulator.
Signed-off-by: Ninad Palsule <ninad at linux.ibm.com>
---
.../dts/aspeed/aspeed-bmc-ibm-system1.dts | 266 ++++++++++++++++++
1 file changed, 266 insertions(+)
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
index 0557bff9f36a..b8e7e52d4600 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
@@ -114,10 +114,127 @@ vga_memory: region at bf000000 {
};
};
+ iio-hwmon {
+ compatible = "iio-hwmon";
+ io-channels = <&p12v_vd 0>, <&p5v_aux_vd 0>,
+ <&p5v_bmc_aux_vd 0>, <&p3v3_aux_vd 0>,
+ <&p3v3_bmc_aux_vd 0>, <&p1v8_bmc_aux_vd 0>,
+ <&adc1 4>, <&adc0 2>, <&adc1 0>,
+ <&p2V5_aux_vd 0>, <&adc1 7>;
+ };
+
+ p12v_vd: voltage_divider1 {
+ compatible = "voltage-divider";
+ io-channels = <&adc1 3>;
+ #io-channel-cells = <1>;
+
+ /* Scale the system voltage by 1127/127 to fit the ADC range.
+ * Use small nominator to prevent integer overflow.
+ */
+ output-ohms = <15>;
+ full-ohms = <133>;
+ };
+
+ p5v_aux_vd: voltage_divider2 {
+ compatible = "voltage-divider";
+ io-channels = <&adc1 5>;
+ #io-channel-cells = <1>;
+
+ /* Scale the system voltage by 1365/365 to fit the ADC range.
+ * Use small nominator to prevent integer overflow.
+ */
+ output-ohms = <50>;
+ full-ohms = <187>;
+ };
+
+ p5v_bmc_aux_vd: voltage_divider3 {
+ compatible = "voltage-divider";
+ io-channels = <&adc0 3>;
+ #io-channel-cells = <1>;
+
+ /* Scale the system voltage by 1365/365 to fit the ADC range.
+ * Use small nominator to prevent integer overflow.
+ */
+ output-ohms = <50>;
+ full-ohms = <187>;
+ };
+
+ p3v3_aux_vd: voltage_divider4 {
+ compatible = "voltage-divider";
+ io-channels = <&adc1 2>;
+ #io-channel-cells = <1>;
+
+ /* Scale the system voltage by 1698/698 to fit the ADC range.
+ * Use small nominator to prevent integer overflow.
+ */
+ output-ohms = <14>;
+ full-ohms = <34>;
+ };
+
+ p3v3_bmc_aux_vd: voltage_divider5 {
+ compatible = "voltage-divider";
+ io-channels = <&adc0 7>;
+ #io-channel-cells = <1>;
+
+ /* Scale the system voltage by 1698/698 to fit the ADC range.
+ * Use small nominator to prevent integer overflow.
+ */
+ output-ohms = <14>;
+ full-ohms = <34>;
+ };
+
+ p1v8_bmc_aux_vd: voltage_divider6 {
+ compatible = "voltage-divider";
+ io-channels = <&adc0 6>;
+ #io-channel-cells = <1>;
+
+ /* Scale the system voltage by 4000/3000 to fit the ADC range.
+ * Use small nominator to prevent integer overflow.
+ */
+ output-ohms = <3>;
+ full-ohms = <4>;
+ };
+
+ p2V5_aux_vd: voltage_divider7 {
+ compatible = "voltage-divider";
+ io-channels = <&adc1 1>;
+ #io-channel-cells = <1>;
+
+ /* Scale the system voltage by 2100/1100 to fit the ADC range.
+ * Use small nominator to prevent integer overflow.
+ */
+ output-ohms = <11>;
+ full-ohms = <21>;
+ };
+
+ p1v8_bmc_aux: fixedregulator-p1v8_bmc_aux {
+ compatible = "regulator-fixed";
+ regulator-name = "p1v8_bmc_aux";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ };
+};
+
+&adc0 {
+ status = "okay";
+ vref-supply = <&p1v8_bmc_aux>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_adc0_default
+ &pinctrl_adc1_default
+ &pinctrl_adc2_default
+ &pinctrl_adc3_default
+ &pinctrl_adc4_default
+ &pinctrl_adc5_default
+ &pinctrl_adc6_default
+ &pinctrl_adc7_default>;
};
&adc1 {
status = "okay";
+ vref-supply = <&p1v8_bmc_aux>;
+ aspeed,battery-sensing;
aspeed,int-vref-microvolt = <2500000>;
pinctrl-names = "default";
@@ -250,10 +367,32 @@ &kcs3 {
&i2c0 {
status = "okay";
+
+ regulator at 60 {
+ compatible = "maxim,max8952";
+ reg = <0x60>;
+
+ max8952,default-mode = <0>;
+ max8952,dvs-mode-microvolt = <1250000>, <1200000>,
+ <1050000>, <950000>;
+ max8952,sync-freq = <0>;
+ max8952,ramp-speed = <0>;
+
+ regulator-name = "VR_1.0V";
+ regulator-min-microvolt = <770000>;
+ regulator-max-microvolt = <1400000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
};
&i2c1 {
status = "okay";
+
+ regulator at 42 {
+ compatible = "infineon,ir38263";
+ reg = <0x42>;
+ };
};
&i2c2 {
@@ -327,6 +466,21 @@ &i2c4 {
&i2c5 {
status = "okay";
+
+ regulator at 3a {
+ compatible = "maxim,max5970";
+ reg = <0x3a>;
+ };
+
+ regulator at 42 {
+ compatible = "infineon,ir38263";
+ reg = <0x42>;
+ };
+
+ regulator at 43 {
+ compatible = "infineon,ir38060";
+ reg = <0x43>;
+ };
};
&i2c6 {
@@ -423,6 +577,11 @@ i2c7mux0chn3: i2c at 3 {
#address-cells = <1>;
#size-cells = <0>;
reg = <3>;
+
+ regulator at 58 {
+ compatible = "mps,mp2973";
+ reg = <0x58>;
+ };
};
i2c7mux0chn4: i2c at 4 {
@@ -435,6 +594,11 @@ i2c7mux0chn5: i2c at 5 {
#address-cells = <1>;
#size-cells = <0>;
reg = <5>;
+
+ regulator at 40 {
+ compatible = "infineon,tda38640";
+ reg = <0x40>;
+ };
};
i2c7mux0chn6: i2c at 6 {
@@ -466,12 +630,37 @@ i2c8mux0chn0: i2c at 0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
+
+ regulator at 58 {
+ compatible = "mps,mp2971";
+ reg = <0x58>;
+ };
};
i2c8mux0chn1: i2c at 1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
+
+ regulator at 40 {
+ compatible = "infineon,tda38640";
+ reg = <0x40>;
+ };
+
+ regulator at 41 {
+ compatible = "infineon,tda38640";
+ reg = <0x41>;
+ };
+
+ regulator at 58 {
+ compatible = "mps,mp2971";
+ reg = <0x58>;
+ };
+
+ regulator at 5b {
+ compatible = "mps,mp2971";
+ reg = <0x5b>;
+ };
};
i2c8mux0chn2: i2c at 2 {
@@ -565,12 +754,44 @@ i2c8mux0chn7: i2c at 7 {
#address-cells = <1>;
#size-cells = <0>;
reg = <7>;
+
+ regulator at 40 {
+ compatible = "infineon,ir38060";
+ reg = <0x40>;
+ };
};
};
};
&i2c9 {
status = "okay";
+
+ regulator at 40 {
+ compatible = "infineon,ir38263";
+ reg = <0x40>;
+ };
+
+ regulator at 41 {
+ compatible = "infineon,ir38263";
+ reg = <0x41>;
+ };
+
+ regulator at 60 {
+ compatible = "maxim,max8952";
+ reg = <0x60>;
+
+ max8952,default-mode = <0>;
+ max8952,dvs-mode-microvolt = <1250000>, <1200000>,
+ <1050000>, <950000>;
+ max8952,sync-freq = <0>;
+ max8952,ramp-speed = <0>;
+
+ regulator-name = "VR_1.2V";
+ regulator-min-microvolt = <770000>;
+ regulator-max-microvolt = <1400000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
};
&i2c11 {
@@ -583,6 +804,11 @@ &i2c12 {
&i2c13 {
status = "okay";
+
+ regulator at 41 {
+ compatible = "infineon,ir38263";
+ reg = <0x41>;
+ };
};
&i2c14 {
@@ -618,6 +844,11 @@ i2c14mux0chn3: i2c at 3 {
#address-cells = <1>;
#size-cells = <0>;
reg = <3>;
+
+ regulator at 58 {
+ compatible = "mps,mp2973";
+ reg = <0x58>;
+ };
};
i2c14mux0chn4: i2c at 4 {
@@ -630,6 +861,11 @@ i2c14mux0chn5: i2c at 5 {
#address-cells = <1>;
#size-cells = <0>;
reg = <5>;
+
+ regulator at 40 {
+ compatible = "infineon,tda38640";
+ reg = <0x40>;
+ };
};
i2c14mux0chn6: i2c at 6 {
@@ -661,12 +897,37 @@ i2c15mux0chn0: i2c at 0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
+
+ regulator at 58 {
+ compatible = "mps,mp2971";
+ reg = <0x58>;
+ };
};
i2c15mux0chn1: i2c at 1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
+
+ regulator at 40 {
+ compatible = "infineon,tda38640";
+ reg = <0x40>;
+ };
+
+ regulator at 41 {
+ compatible = "infineon,tda38640";
+ reg = <0x41>;
+ };
+
+ regulator at 58 {
+ compatible = "mps,mp2971";
+ reg = <0x58>;
+ };
+
+ regulator at 5b {
+ compatible = "mps,mp2971";
+ reg = <0x5b>;
+ };
};
i2c15mux0chn2: i2c at 2 {
@@ -760,6 +1021,11 @@ i2c15mux0chn7: i2c at 7 {
#address-cells = <1>;
#size-cells = <0>;
reg = <7>;
+
+ regulator at 40 {
+ compatible = "infineon,ir38060";
+ reg = <0x40>;
+ };
};
};
};
--
2.39.2
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