Difference between revisions of "PinePhone Power Management"
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| Line 128: | Line 128: | ||
|- | |- | ||
| GPIO0-LDO | | GPIO0-LDO | ||
| 3.3V | | 2.8V-3.3V | ||
| Yes | | Yes | ||
| Yes | | Yes | ||
| Backlight, LCD, Proximity sensor, Touchscreen [I2C, VCC] | | Backlight PWM, LCD, Proximity sensor, Touchscreen [I2C, VCC] | ||
|- | |- | ||
| GPIO1-LDO | | GPIO1-LDO | ||
Revision as of 06:26, 12 February 2020
The data on this page is based on the the PinePhone v1.1 - Braveheart.
Regulators
Current Assignments
| Name/GPIO | Output Voltage | Disable at runtime? | Disable in suspend? | Uses (internal/external separated by semicolon) |
|---|---|---|---|---|
| DCDC1 | 3.3V | No | Yes (breaks MMC0) | VCC-EFUSE, VCC-IO, VCC-PC (VQMMC2), VCC-PD, VCC-USB; Modem I2C/PCM/UART, Motor, Pogo I2C, UART0, VMMC0, VMMC2, WiFi CHIP_EN |
| DCDC2 | DVFS | No | Yes | VDD-CPUX |
| DCDC3 | DVFS | N/A | N/A | VDD-CPUX (polyphase with DCDC2) |
| DCDC4 | N/A | Yes | Yes | Not used |
| DCDC5 | 1.2V | No | Yes (future) | VCC-DRAM; DRAM |
| DCDC6 | 1.1V | No | Yes (future) | VDD-SYS |
| DC1SW | N/A | Yes | Yes | Not used |
| ALDO1 | 2.8V | Yes | Yes | VCC-PE; Camera AFVCC, Camera DOVDD, CSI I2C, Pogo I2C |
| ALDO2 | 1.8V | No | No | VCC-PL; Pogo INT |
| ALDO3 | 3.0V | No | Yes (future) | AVCC, KEYADC, VCC-PLL |
| DLDO1 | 3.3V | No (ANX7688 [AVDD33, VCONN_EN Disable Pull-up]) | No | HVCC, VCC-DSI; ANX7688 [AVDD33, HDMI_VT, I2C, ANX-V1.0 Enable, VCONN_EN Disable Pull-up], HDMI [DDC, HPD], Proximity LED, Sensor I2C, Sensor VDD |
| DLDO2 | 1.8V | Yes | Yes | MIPI-DSI VIO |
| DLDO3 | 2.8V | Yes | Yes | Camera AVDD |
| DLDO4 | 3.3V | Yes | Yes | VCC-PG; VQMMC1 |
| ELDO1 | 1.8V | No | No (DRAM) | CPVDD; DRAM |
| ELDO2 | N/A | Yes | Yes | Not used |
| ELDO3 | 1.8V | Yes | Yes | Camera DVDD |
| FLDO1 | 1.2V | Yes | Yes | HSIC-VCC (not used) |
| FLDO2 | 1.1V | No | No (VDD-CPUS) | VDD-CPUS |
| GPIO0-LDO | 2.8V-3.3V | Yes | Yes | Backlight PWM, LCD, Proximity sensor, Touchscreen [I2C, VCC] |
| GPIO1-LDO | 1.8V | No (ANX7688 DVDD1V8) | No (ANX7688 DVDD1V8) | ANX7688 [AVDD1V8, DVDD1V8, CC, HDMI DDC, I2C, Power/Reset pull-up] |
| PD6 | 5.0V | Yes | Yes | USB OTG |
| PD8 | 5.0V | Yes | Yes | Pogo supply, USB OTG via PD6 |
| PD9 | 5.0V | Yes | Yes | VCONN (USB Type C) |
| PH10 | PWM | Yes | Yes | Backlight |
| PL7 | VBAT | Yes | Yes | Modem |
| ANX-V1.0 | 1.0V | Yes | Yes | ANX7688 [AVDD1V0, DVDD1V0] |
Suggested Changes
ANX7688
- Move ANX7688 AVDD33 (the chip input only, not the other things connected to 3v3) and ANX7688 I2C Level Shift (3.3V side) from DLD01 to DCDC1
- Move ANX7688 DVDD1V8 (the chip input only, not the other things labeled DVDD1V8) from GPIO1-LDO to ALDO2
- Move ANX7688 ANX-V1.0 Regulator Enable and ANX7688 VCONN_EN Disable Pull-up from DLDO1 to GPIO1-LDO
The result of these changes would be that:
- The always-on part of the ANX7688 chip will always be powered
- GPIO1-LDO only needs to be powered when a USB cable is detected, and is enough to power the rest of the chip (except HDMI)
- DLDO1 only needs to be enabled if the display pipeline or sensors are active, even if a USB cable is plugged in
Open Questions
- How is ANX1.8V actually powered? from GPIO1-LDO or PS or both?
- What exactly is the modem PWRKEY connected to?