|  | // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) | 
|  | /* | 
|  | * Copyright (C) STMicroelectronics 2019 - All Rights Reserved | 
|  | * Author: Alexandre Torgue <alexandre.torgue@st.com> for STMicroelectronics. | 
|  | */ | 
|  |  | 
|  | #include <dt-bindings/gpio/gpio.h> | 
|  | #include <dt-bindings/mfd/st,stpmic1.h> | 
|  |  | 
|  | / { | 
|  | memory@c0000000 { | 
|  | device_type = "memory"; | 
|  | reg = <0xc0000000 0x20000000>; | 
|  | }; | 
|  |  | 
|  | reserved-memory { | 
|  | #address-cells = <1>; | 
|  | #size-cells = <1>; | 
|  | ranges; | 
|  |  | 
|  | mcuram2: mcuram2@10000000 { | 
|  | compatible = "shared-dma-pool"; | 
|  | reg = <0x10000000 0x40000>; | 
|  | no-map; | 
|  | }; | 
|  |  | 
|  | vdev0vring0: vdev0vring0@10040000 { | 
|  | compatible = "shared-dma-pool"; | 
|  | reg = <0x10040000 0x1000>; | 
|  | no-map; | 
|  | }; | 
|  |  | 
|  | vdev0vring1: vdev0vring1@10041000 { | 
|  | compatible = "shared-dma-pool"; | 
|  | reg = <0x10041000 0x1000>; | 
|  | no-map; | 
|  | }; | 
|  |  | 
|  | vdev0buffer: vdev0buffer@10042000 { | 
|  | compatible = "shared-dma-pool"; | 
|  | reg = <0x10042000 0x4000>; | 
|  | no-map; | 
|  | }; | 
|  |  | 
|  | mcuram: mcuram@30000000 { | 
|  | compatible = "shared-dma-pool"; | 
|  | reg = <0x30000000 0x40000>; | 
|  | no-map; | 
|  | }; | 
|  |  | 
|  | retram: retram@38000000 { | 
|  | compatible = "shared-dma-pool"; | 
|  | reg = <0x38000000 0x10000>; | 
|  | no-map; | 
|  | }; | 
|  |  | 
|  | gpu_reserved: gpu@d4000000 { | 
|  | reg = <0xd4000000 0x4000000>; | 
|  | no-map; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | led { | 
|  | compatible = "gpio-leds"; | 
|  | blue { | 
|  | label = "heartbeat"; | 
|  | gpios = <&gpiod 11 GPIO_ACTIVE_HIGH>; | 
|  | linux,default-trigger = "heartbeat"; | 
|  | default-state = "off"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | sound { | 
|  | compatible = "audio-graph-card"; | 
|  | label = "STM32MP1-DK"; | 
|  | routing = | 
|  | "Playback" , "MCLK", | 
|  | "Capture" , "MCLK", | 
|  | "MICL" , "Mic Bias"; | 
|  | dais = <&sai2a_port &sai2b_port &i2s2_port>; | 
|  | status = "okay"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &adc { | 
|  | pinctrl-names = "default"; | 
|  | pinctrl-0 = <&adc12_ain_pins_a>, <&adc12_usb_cc_pins_a>; | 
|  | vdd-supply = <&vdd>; | 
|  | vdda-supply = <&vdd>; | 
|  | vref-supply = <&vrefbuf>; | 
|  | status = "disabled"; | 
|  | adc1: adc@0 { | 
|  | /* | 
|  | * Type-C USB_PWR_CC1 & USB_PWR_CC2 on in18 & in19. | 
|  | * Use at least 5 * RC time, e.g. 5 * (Rp + Rd) * C: | 
|  | * 5 * (56 + 47kOhms) * 5pF => 2.5us. | 
|  | * Use arbitrary margin here (e.g. 5us). | 
|  | */ | 
|  | st,min-sample-time-nsecs = <5000>; | 
|  | /* AIN connector, USB Type-C CC1 & CC2 */ | 
|  | st,adc-channels = <0 1 6 13 18 19>; | 
|  | status = "okay"; | 
|  | }; | 
|  | adc2: adc@100 { | 
|  | /* AIN connector, USB Type-C CC1 & CC2 */ | 
|  | st,adc-channels = <0 1 2 6 18 19>; | 
|  | st,min-sample-time-nsecs = <5000>; | 
|  | status = "okay"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &cec { | 
|  | pinctrl-names = "default", "sleep"; | 
|  | pinctrl-0 = <&cec_pins_b>; | 
|  | pinctrl-1 = <&cec_sleep_pins_b>; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &dts { | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | ðernet0 { | 
|  | status = "okay"; | 
|  | pinctrl-0 = <ðernet0_rgmii_pins_a>; | 
|  | pinctrl-1 = <ðernet0_rgmii_sleep_pins_a>; | 
|  | pinctrl-names = "default", "sleep"; | 
|  | phy-mode = "rgmii-id"; | 
|  | max-speed = <1000>; | 
|  | phy-handle = <&phy0>; | 
|  |  | 
|  | mdio0 { | 
|  | #address-cells = <1>; | 
|  | #size-cells = <0>; | 
|  | compatible = "snps,dwmac-mdio"; | 
|  | phy0: ethernet-phy@0 { | 
|  | reg = <0>; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &gpu { | 
|  | contiguous-area = <&gpu_reserved>; | 
|  | }; | 
|  |  | 
|  | &i2c1 { | 
|  | pinctrl-names = "default", "sleep"; | 
|  | pinctrl-0 = <&i2c1_pins_a>; | 
|  | pinctrl-1 = <&i2c1_sleep_pins_a>; | 
|  | i2c-scl-rising-time-ns = <100>; | 
|  | i2c-scl-falling-time-ns = <7>; | 
|  | status = "okay"; | 
|  | /delete-property/dmas; | 
|  | /delete-property/dma-names; | 
|  |  | 
|  | hdmi-transmitter@39 { | 
|  | compatible = "sil,sii9022"; | 
|  | reg = <0x39>; | 
|  | iovcc-supply = <&v3v3_hdmi>; | 
|  | cvcc12-supply = <&v1v2_hdmi>; | 
|  | reset-gpios = <&gpioa 10 GPIO_ACTIVE_LOW>; | 
|  | interrupts = <1 IRQ_TYPE_EDGE_FALLING>; | 
|  | interrupt-parent = <&gpiog>; | 
|  | #sound-dai-cells = <0>; | 
|  | status = "okay"; | 
|  |  | 
|  | ports { | 
|  | #address-cells = <1>; | 
|  | #size-cells = <0>; | 
|  |  | 
|  | port@0 { | 
|  | reg = <0>; | 
|  | sii9022_in: endpoint { | 
|  | remote-endpoint = <<dc_ep0_out>; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | port@3 { | 
|  | reg = <3>; | 
|  | sii9022_tx_endpoint: endpoint { | 
|  | remote-endpoint = <&i2s2_endpoint>; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | cs42l51: cs42l51@4a { | 
|  | compatible = "cirrus,cs42l51"; | 
|  | reg = <0x4a>; | 
|  | #sound-dai-cells = <0>; | 
|  | VL-supply = <&v3v3>; | 
|  | VD-supply = <&v1v8_audio>; | 
|  | VA-supply = <&v1v8_audio>; | 
|  | VAHP-supply = <&v1v8_audio>; | 
|  | reset-gpios = <&gpiog 9 GPIO_ACTIVE_LOW>; | 
|  | clocks = <&sai2a>; | 
|  | clock-names = "MCLK"; | 
|  | status = "okay"; | 
|  |  | 
|  | cs42l51_port: port { | 
|  | #address-cells = <1>; | 
|  | #size-cells = <0>; | 
|  |  | 
|  | cs42l51_tx_endpoint: endpoint@0 { | 
|  | reg = <0>; | 
|  | remote-endpoint = <&sai2a_endpoint>; | 
|  | frame-master; | 
|  | bitclock-master; | 
|  | }; | 
|  |  | 
|  | cs42l51_rx_endpoint: endpoint@1 { | 
|  | reg = <1>; | 
|  | remote-endpoint = <&sai2b_endpoint>; | 
|  | frame-master; | 
|  | bitclock-master; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &i2c4 { | 
|  | pinctrl-names = "default", "sleep"; | 
|  | pinctrl-0 = <&i2c4_pins_a>; | 
|  | pinctrl-1 = <&i2c4_sleep_pins_a>; | 
|  | i2c-scl-rising-time-ns = <185>; | 
|  | i2c-scl-falling-time-ns = <20>; | 
|  | clock-frequency = <400000>; | 
|  | 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 = <1200000>; | 
|  | 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"; | 
|  | 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; | 
|  | }; | 
|  |  | 
|  | 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 = <1>; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | 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"; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &i2s2 { | 
|  | clocks = <&rcc SPI2>, <&rcc SPI2_K>, <&rcc PLL3_Q>, <&rcc PLL3_R>; | 
|  | clock-names = "pclk", "i2sclk", "x8k", "x11k"; | 
|  | pinctrl-names = "default", "sleep"; | 
|  | pinctrl-0 = <&i2s2_pins_a>; | 
|  | pinctrl-1 = <&i2s2_sleep_pins_a>; | 
|  | status = "okay"; | 
|  |  | 
|  | i2s2_port: port { | 
|  | i2s2_endpoint: endpoint { | 
|  | remote-endpoint = <&sii9022_tx_endpoint>; | 
|  | format = "i2s"; | 
|  | mclk-fs = <256>; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &ipcc { | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &iwdg2 { | 
|  | timeout-sec = <32>; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | <dc { | 
|  | pinctrl-names = "default", "sleep"; | 
|  | pinctrl-0 = <<dc_pins_a>; | 
|  | pinctrl-1 = <<dc_sleep_pins_a>; | 
|  | status = "okay"; | 
|  |  | 
|  | port { | 
|  | ltdc_ep0_out: endpoint@0 { | 
|  | reg = <0>; | 
|  | remote-endpoint = <&sii9022_in>; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &m4_rproc { | 
|  | memory-region = <&retram>, <&mcuram>, <&mcuram2>, <&vdev0vring0>, | 
|  | <&vdev0vring1>, <&vdev0buffer>; | 
|  | mboxes = <&ipcc 0>, <&ipcc 1>, <&ipcc 2>; | 
|  | mbox-names = "vq0", "vq1", "shutdown"; | 
|  | interrupt-parent = <&exti>; | 
|  | interrupts = <68 1>; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &pwr_regulators { | 
|  | vdd-supply = <&vdd>; | 
|  | vdd_3v3_usbfs-supply = <&vdd_usb>; | 
|  | }; | 
|  |  | 
|  | &rng1 { | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &rtc { | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &sai2 { | 
|  | clocks = <&rcc SAI2>, <&rcc PLL3_Q>, <&rcc PLL3_R>; | 
|  | clock-names = "pclk", "x8k", "x11k"; | 
|  | pinctrl-names = "default", "sleep"; | 
|  | pinctrl-0 = <&sai2a_pins_a>, <&sai2b_pins_b>; | 
|  | pinctrl-1 = <&sai2a_sleep_pins_a>, <&sai2b_sleep_pins_b>; | 
|  | status = "okay"; | 
|  |  | 
|  | sai2a: audio-controller@4400b004 { | 
|  | #clock-cells = <0>; | 
|  | dma-names = "tx"; | 
|  | clocks = <&rcc SAI2_K>; | 
|  | clock-names = "sai_ck"; | 
|  | status = "okay"; | 
|  |  | 
|  | sai2a_port: port { | 
|  | sai2a_endpoint: endpoint { | 
|  | remote-endpoint = <&cs42l51_tx_endpoint>; | 
|  | format = "i2s"; | 
|  | mclk-fs = <256>; | 
|  | dai-tdm-slot-num = <2>; | 
|  | dai-tdm-slot-width = <32>; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | sai2b: audio-controller@4400b024 { | 
|  | dma-names = "rx"; | 
|  | st,sync = <&sai2a 2>; | 
|  | clocks = <&rcc SAI2_K>, <&sai2a>; | 
|  | clock-names = "sai_ck", "MCLK"; | 
|  | status = "okay"; | 
|  |  | 
|  | sai2b_port: port { | 
|  | sai2b_endpoint: endpoint { | 
|  | remote-endpoint = <&cs42l51_rx_endpoint>; | 
|  | format = "i2s"; | 
|  | mclk-fs = <256>; | 
|  | dai-tdm-slot-num = <2>; | 
|  | dai-tdm-slot-width = <32>; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &sdmmc1 { | 
|  | pinctrl-names = "default", "opendrain", "sleep"; | 
|  | pinctrl-0 = <&sdmmc1_b4_pins_a>; | 
|  | pinctrl-1 = <&sdmmc1_b4_od_pins_a>; | 
|  | pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>; | 
|  | cd-gpios = <&gpiob 7 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; | 
|  | disable-wp; | 
|  | st,neg-edge; | 
|  | bus-width = <4>; | 
|  | vmmc-supply = <&v3v3>; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &sdmmc3 { | 
|  | pinctrl-names = "default", "opendrain", "sleep"; | 
|  | pinctrl-0 = <&sdmmc3_b4_pins_a>; | 
|  | pinctrl-1 = <&sdmmc3_b4_od_pins_a>; | 
|  | pinctrl-2 = <&sdmmc3_b4_sleep_pins_a>; | 
|  | broken-cd; | 
|  | st,neg-edge; | 
|  | bus-width = <4>; | 
|  | vmmc-supply = <&v3v3>; | 
|  | status = "disabled"; | 
|  | }; | 
|  |  | 
|  | &timers1 { | 
|  | /* spare dmas for other usage */ | 
|  | /delete-property/dmas; | 
|  | /delete-property/dma-names; | 
|  | status = "disabled"; | 
|  | pwm { | 
|  | pinctrl-0 = <&pwm1_pins_a>; | 
|  | pinctrl-1 = <&pwm1_sleep_pins_a>; | 
|  | pinctrl-names = "default", "sleep"; | 
|  | status = "okay"; | 
|  | }; | 
|  | timer@0 { | 
|  | status = "okay"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &timers3 { | 
|  | /delete-property/dmas; | 
|  | /delete-property/dma-names; | 
|  | status = "disabled"; | 
|  | pwm { | 
|  | pinctrl-0 = <&pwm3_pins_a>; | 
|  | pinctrl-1 = <&pwm3_sleep_pins_a>; | 
|  | pinctrl-names = "default", "sleep"; | 
|  | status = "okay"; | 
|  | }; | 
|  | timer@2 { | 
|  | status = "okay"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &timers4 { | 
|  | /delete-property/dmas; | 
|  | /delete-property/dma-names; | 
|  | status = "disabled"; | 
|  | pwm { | 
|  | pinctrl-0 = <&pwm4_pins_a &pwm4_pins_b>; | 
|  | pinctrl-1 = <&pwm4_sleep_pins_a &pwm4_sleep_pins_b>; | 
|  | pinctrl-names = "default", "sleep"; | 
|  | status = "okay"; | 
|  | }; | 
|  | timer@3 { | 
|  | status = "okay"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &timers5 { | 
|  | /delete-property/dmas; | 
|  | /delete-property/dma-names; | 
|  | status = "disabled"; | 
|  | pwm { | 
|  | pinctrl-0 = <&pwm5_pins_a>; | 
|  | pinctrl-1 = <&pwm5_sleep_pins_a>; | 
|  | pinctrl-names = "default", "sleep"; | 
|  | status = "okay"; | 
|  | }; | 
|  | timer@4 { | 
|  | status = "okay"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &timers6 { | 
|  | /delete-property/dmas; | 
|  | /delete-property/dma-names; | 
|  | status = "disabled"; | 
|  | timer@5 { | 
|  | status = "okay"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &timers12 { | 
|  | /delete-property/dmas; | 
|  | /delete-property/dma-names; | 
|  | status = "disabled"; | 
|  | pwm { | 
|  | pinctrl-0 = <&pwm12_pins_a>; | 
|  | pinctrl-1 = <&pwm12_sleep_pins_a>; | 
|  | pinctrl-names = "default", "sleep"; | 
|  | status = "okay"; | 
|  | }; | 
|  | timer@11 { | 
|  | status = "okay"; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &uart4 { | 
|  | pinctrl-names = "default"; | 
|  | pinctrl-0 = <&uart4_pins_a>; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &usbh_ehci { | 
|  | phys = <&usbphyc_port0>; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &usbotg_hs { | 
|  | dr_mode = "peripheral"; | 
|  | phys = <&usbphyc_port1 0>; | 
|  | phy-names = "usb2-phy"; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &usbphyc { | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &usbphyc_port0 { | 
|  | phy-supply = <&vdd_usb>; | 
|  | vdda1v1-supply = <®11>; | 
|  | vdda1v8-supply = <®18>; | 
|  | }; | 
|  |  | 
|  | &usbphyc_port1 { | 
|  | phy-supply = <&vdd_usb>; | 
|  | vdda1v1-supply = <®11>; | 
|  | vdda1v8-supply = <®18>; | 
|  | }; | 
|  |  | 
|  | &vrefbuf { | 
|  | regulator-min-microvolt = <2500000>; | 
|  | regulator-max-microvolt = <2500000>; | 
|  | vdda-supply = <&vdd>; | 
|  | status = "okay"; | 
|  | }; |