[PATCH v3 1/4] ARM: dts: aspeed: nvidia: gb200nvl: Add VCC Supply
Willie Thai
wthai at nvidia.com
Thu Jul 17 02:52:10 PDT 2025
Add Vcc supply to avoid probing the devices before they have power.
Signed-off-by: Deepak Kodihalli <dkodihalli at nvidia.com>
Signed-off-by: Ed Tanous <etanous at nvidia.com>
Signed-off-by: Willie Thai <wthai at nvidia.com>
---
Changes v1 -> v2:
- Fix unevaluated vcc-supply properties [Rob Herring]
---
---
.../dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts
index 41e3e9dd85f571254a08d40e68c0d8f8f049256b..bd9395a194137ea70d184665ad6cb659541ef175 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200nvl-bmc.dts
@@ -126,6 +126,17 @@ button-uid {
gpio = <&sgpiom0 154 GPIO_ACTIVE_LOW>;
};
};
+
+ standby_power_regulator: standby-power-regulator {
+ status = "okay";
+ compatible = "regulator-fixed";
+ regulator-name = "standby_power";
+ gpio = <&gpio0 ASPEED_GPIO(M, 3) GPIO_ACTIVE_HIGH>;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ enable-active-high;
+ regulator-always-on;
+ };
};
// Enable Primary flash on FMC for bring up activity
@@ -431,6 +442,7 @@ exp4: gpio at 21 {
#interrupt-cells = <2>;
interrupt-parent = <&gpio1>;
interrupts = <ASPEED_GPIO(B, 6) IRQ_TYPE_LEVEL_LOW>;
+ vcc-supply = <&standby_power_regulator>;
gpio-line-names =
"RTC_MUX_SEL-O",
"PCI_MUX_SEL-O",
@@ -464,6 +476,7 @@ i2c-mux at 71 {
#size-cells = <0>;
reg = <0x71>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
imux16: i2c at 0 {
#address-cells = <1>;
@@ -528,6 +541,7 @@ i2c-mux at 72 {
#size-cells = <0>;
reg = <0x72>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
imux20: i2c at 0 {
#address-cells = <1>;
@@ -545,6 +559,7 @@ gpio at 21 {
reg = <0x21>;
gpio-controller;
#gpio-cells = <2>;
+ vcc-supply = <&standby_power_regulator>;
gpio-line-names =
"RST_CX_0_L-O",
"RST_CX_1_L-O",
@@ -584,6 +599,7 @@ i2c-mux at 73 {
#size-cells = <0>;
reg = <0x73>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
imux24: i2c at 0 {
#address-cells = <1>;
@@ -602,6 +618,7 @@ i2c-mux at 70 {
#size-cells = <0>;
reg = <0x70>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
i2c25mux0: i2c at 0 {
#address-cells = <1>;
@@ -648,6 +665,7 @@ i2c-mux at 75 {
#size-cells = <0>;
reg = <0x75>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
imux28: i2c at 0 {
#address-cells = <1>;
@@ -712,6 +730,7 @@ i2c-mux at 76 {
#size-cells = <0>;
reg = <0x76>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
imux32: i2c at 0 {
#address-cells = <1>;
@@ -729,6 +748,7 @@ gpio at 21 {
reg = <0x21>;
gpio-controller;
#gpio-cells = <2>;
+ vcc-supply = <&standby_power_regulator>;
gpio-line-names =
"SEC_RST_CX_0_L-O",
"SEC_RST_CX_1_L-O",
@@ -768,6 +788,7 @@ i2c-mux at 77 {
#size-cells = <0>;
reg = <0x77>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
imux36: i2c at 0 {
#address-cells = <1>;
@@ -862,6 +883,7 @@ exp0: gpio at 20 {
#interrupt-cells = <2>;
interrupt-parent = <&gpio1>;
interrupts = <ASPEED_GPIO(B, 6) IRQ_TYPE_LEVEL_LOW>;
+ vcc-supply = <&standby_power_regulator>;
gpio-line-names =
"FPGA_THERM_OVERT_L-I",
"FPGA_READY_BMC-I",
@@ -891,6 +913,7 @@ exp1: gpio at 21 {
#interrupt-cells = <2>;
interrupt-parent = <&gpio1>;
interrupts = <ASPEED_GPIO(B, 6) IRQ_TYPE_LEVEL_LOW>;
+ vcc-supply = <&standby_power_regulator>;
gpio-line-names =
"SEC_FPGA_THERM_OVERT_L-I",
"SEC_FPGA_READY_BMC-I",
@@ -949,6 +972,7 @@ exp3: gpio at 74 {
#interrupt-cells = <2>;
interrupt-parent = <&gpio1>;
interrupts = <ASPEED_GPIO(B, 6) IRQ_TYPE_LEVEL_LOW>;
+ vcc-supply = <&standby_power_regulator>;
gpio-line-names =
"IOB_PRSNT_L",
"IOB_DP_HPD",
@@ -1014,6 +1038,7 @@ i2c-mux at 77 {
#size-cells = <0>;
reg = <0x77>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
e1si2c0: i2c at 0 {
#address-cells = <1>;
@@ -1054,6 +1079,7 @@ i2c-mux at 77 {
#size-cells = <0>;
reg = <0x77>;
i2c-mux-idle-disconnect;
+ vdd-supply = <&standby_power_regulator>;
e1si2c4: i2c at 0 {
#address-cells = <1>;
--
2.25.1
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