Apple A11
|
Picture of the Apple A11 SoC | |
| Manufacturer | Apple |
|---|---|
| Name | A11 |
| Architecture | aarch64 |
| CPU |
6x (2x 2.39 GHz 4x 1.42 GHz) Apple A11 |
| GPU | Apple-designed 3 core/Apple G10P |
| Year | 2017 |
| Process | 10nm |
| Mainline | yes |
CPU SMP (bring up secondary CPU cores), CPU frequency scaling, CPUidle |
Partial
|
|---|---|
UART |
Works
|
Storage eMMC, SD cards, UFS, ... |
Partial
|
USB |
Partial
|
Display |
Partial
|
GPU |
Broken
|
Pinctrl |
Works
|
I²C |
Works
|
Audio |
Broken
|
Video Hardware-accelerated video de/encoding |
Broken
|
Thermal |
Partial
|
WiFi |
Broken
|
Bluetooth |
Broken
|
Modem Calls, SMS, Internet |
Broken
|
GPS |
Broken
|
Camera |
Broken
|
Suspend |
Broken
|
The Apple A11 is a 64-bit ARM-based system on a chip (SoC) designed by Apple Inc., part of the Apple silicon series, and manufactured by TSMC. It was used in the iPhone 8, iPhone 8 Plus, and iPhone X.
Devices
| Device | Codename | Category |
|---|---|---|
| Apple iPhone X (Global) | apple-d22 | testing |
Components
CPU
SMP is available via spin-table, and there is a CPUFreq driver. There is no scheme in the upstream kernel that allows for CPUIdle and PSCI on a CPU that only implements EL0 and EL1. (other than the default CPUidle with shallow WFI)
USB
USB device mode works. The USB controller is Synopsys DWC2 version 3.00a.
I2C
I2C works. However none of the I2C-connected peripherals are supported.
Thermal
Reboots due to overheating has been observed on iPhone 8. There are some thermal sensors in the SMC exposed via hwmon. However, it is not hooked up to any thermal zones.
Display
Internal display is supported via the iBoot-provided framebuffer. Brightness support is available on iPhone 8 and iPhone 8 Plus.
Storage
The internal NVMe storage works. However, it is not stable and is prone to crashing from duplicate tag error for tag 0, host_id 0x0. status_reg: 0x1000 (RTKit crash message). echo 1 > /sys/class/nvme/nvme0/reset_controller will immediately reproduce the issue.