Acpi 80860f14 __exclusive__ 💯 Deluxe

A very specific and technical topic!

The ACPI (Advanced Configuration and Power Interface) namespace is a complex and vast area, and without more context, it's challenging to provide a precise answer. However, I'll try to offer some general information related to the _SB namespace and the 80860F14 reference.

ACPI Namespace

The ACPI namespace is a hierarchical structure used to describe the hardware components of a computer system. The namespace is composed of a tree-like structure, with the root node being the _SB (System Bus) namespace.

_SB Namespace

The _SB namespace represents the system bus and is the top-level namespace for the system's hardware components. It contains child nodes that describe various system components, such as processors, memory, and I/O devices.

80860F14

The 80860F14 appears to be a hexadecimal value that might represent a specific register or identifier within the ACPI namespace. Without more context, it's difficult to determine the exact meaning of this value.

However, I found a reference to 80860F14 in the Intel ACPI Specification, which might be related to a specific register or field in the ACPI namespace.

Possible connection to Intel platforms

The 80860F14 value might be related to Intel platforms, specifically those using the Intel 8086 or 80860 processor families. The ACPI implementation on these platforms might use this value to configure or access specific hardware components.

Example ASL code

Here's a simple example of an ACPI Source Language (ASL) code snippet that uses the _SB namespace:

DefinitionBlock ("DSDT.aml", "DSDT", 2, "INTEL", "80860F14", 0)
_SB
// child nodes and definitions...

This code defines a DSDT (Differentiated System Description Table) with the _SB namespace as a child node.

Keep in mind that this information is speculative, and without more context or details about your specific use case, it's challenging to provide a more precise answer. Acpi 80860f14

If you could provide more information about what you're trying to accomplish or what issue you're facing, I'd be happy to try and help you further!

ACPI\80860F14 (also known as ACPI\VEN_8086&DEV_0F14 ) is the hardware identifier for the Intel SD Host Controller

found in Intel Atom "Bay Trail" and "Cherry Trail" processors. Review of the Intel SD Host Controller (ACPI\80860F14)

The ACPI\80860F14 device is a critical component for budget laptops and tablets—such as the Lenovo ideapad 100S Asus E200HA Asus Transformer

series—as it manages the internal eMMC storage and microSD card slots. Driver Compatibility

: While natively supported in Windows 10, this device is notorious for being difficult to configure on older or lightweight operating systems like Windows 7 32-bit Windows Thin PC

. Users often have to hunt for specific Intel "SOC" or "Sideband" driver packages from manufacturers like Linux Support Challenges

: On Linux distributions, this device frequently causes headaches. Common issues include the card reader failing to "wake up" after suspend or failing to detect cards entirely. In some cases, developers have had to create custom patches to bypass "dependency checking" in the Linux kernel to get the SDHCI-ACPI driver to initialize correctly. Hardware Limitations

: Because this controller is often paired with slower eMMC storage (which behaves like an internal SD card) rather than a true SSD, it can lead to bottlenecked system performance. Users on Reddit's linuxhardware forum

note that while functional, it results in slower application load times compared to standard SATA or NVMe drives.

: The ACPI\80860F14 is a functional but temperamental piece of hardware. It works well within its original Windows 10 environment, but if you are planning to install Linux or an older Windows version, be prepared to manually troubleshoot driver dependencies and power management settings. Are you trying to fix a missing driver for this device, or are you troubleshooting a card reader that isn't working?

The identifier ACPI\80860F14 refers to the Intel SD Host Controller

, a hardware component primarily found in systems using Intel Atom "Bay Trail" processors. Key Details

: This controller allows the operating system to interface with SD (Secure Digital) cards , microSD slots, and eMMC flash storage. Hardware IDs A very specific and technical topic

: It is commonly listed in Device Manager or system logs under several identifiers, including ACPI\VEN_8086&DEV_0F14 and its compatible ID Common Devices

: You will typically see this device in budget laptops and tablets like the Acer Aspire ES1-131 ASUS T100/T101 series HP Pavilion x2 Arch Linux Forums Common Issues and Solutions

If this device appears with a yellow exclamation mark in Windows or fails to work in Linux: Driver Missing : In Windows, you need the Intel SD Host Controller driver

. Without it, the system will not recognize inserted SD cards or its own internal eMMC storage. Linux Boot Issues

: On some Linux distributions, this controller can cause "timeout" errors or power management bugs. Users often resolve this by adding kernel parameters like intel_idle.max_cstate=1 OS Support

: Older kernels (e.g., pre-4.13) or 32-bit UEFI systems might require specific patches to properly mount the storage driven by this controller. Porteus forum Are you trying to fix a "Missing Driver" error in Windows, or are you troubleshooting an SD card not showing up in Linux?

Arch Linux and SDIO WiFi on a Bay Trail tablet | «WatchMySys» Blog 13 Dec 2015 —

Title: Handling ACPI 80860F14 (Intel Bay Trail I2C Controller) on Linux

Post:

I'm encountering the ACPI device ID 80860F14 on an Intel Atom Bay Trail (e.g., Z3735F, Z3736G) based system.

Context:

Symptoms:

Root Cause: The ACPI driver binding for this ID requires specific handling because the Bay Trail I2C controllers are not fully compliant with the standard Synopsys DesignWare I2C IP block. They need a "semaphore" mechanism to coordinate with the P-unit (Power Management unit).

Fix / Workaround:

  1. Kernel Configuration: Ensure these options are enabled (not just modular):

    CONFIG_I2C_DESIGNWARE_CORE=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
CONFIG_I2C_DESIGNWARE_BAYTRAIL=y   # Critical for this ID

  2. Kernel Command Line (if still failing): Add intel_idle.max_cstate=1 to grub. This prevents the P-unit from entering deep C-states that break the I2C semaphore.

  3. Check ACPI Status:

    ls /sys/bus/acpi/devices/80860F14:00/
cat /sys/bus/acpi/devices/80860F14:00/status

    Expected status: 15 (present, enabled, shown, functioning).

Final note: On mainline kernels 5.10+, this ID should be automatically handled by dw_i2c via the baytrail_sem_platform quirk. If you still see errors, check your DSDT for custom modifications or consider updating your firmware.

Does anyone have a device tree or ACPI overlay for this ID to manually assign the pinctrl-single properties?

What is it?

This device is responsible for managing power states for the processor and other system components. If the driver is missing, your computer may not sleep or wake up correctly, or you may see a generic "Unknown Device" in your device list.

3. Hardware Identification Details

| Attribute | Value | |-----------|-------| | Vendor ID | 8086 (Intel Corporation) | | Device ID | 0F14 | | Full ACPI ID | 80860F14 or INT33F4 (kernel alias) | | Bus Type | I2C (Serial Bus Controller) | | Typical PCI Config Space | Not applicable – ACPI-enumerated | | Power Management | Supports D0-D3cold via ACPI methods |

Note: The Linux kernel often maps 80860F14 to the dw_i2c (DesignWare I2C) driver via the i2c-designware-platform driver.

Solution 1: Intel Chipset Driver Installation (Recommended)

Intel no longer provides explicit "Bay Trail I2C" drivers on their main website. Instead, they are bundled within the Intel SOC (System-on-Chip) Driver Set.

  1. Visit your device manufacturer’s support website (Dell, HP, Lenovo, Acer, Asus).
  2. Enter your product’s service tag or model number.
  3. Download and install the Intel Chipset Driver and the Intel Serial IO Driver.
    • The Serial IO driver package includes drivers for I2C, GPIO, SPI, and UART.
  4. Reboot your system.

For custom builds or generic tablets:

Technical Write-Up: ACPI Hardware ID 80860F14

6. Common Issues & Troubleshooting

1. Overview

The ACPI ID 80860F14 (often displayed as ACPI\80860F14 or INT33F4 depending on kernel mappings) identifies a Intel Bay Trail I2C (Inter-Integrated Circuit) Controller. This device is a critical component of the Intel SoC (System on Chip) integrated in low-power platforms, primarily the Bay Trail and Cherry Trail families (e.g., Atom Z36xx/Z37xx, Celeron N28xx/N29xx, Pentium J29xx).

In ACPI (Advanced Configuration and Power Interface), this hardware ID allows the operating system to locate, load, and configure the correct driver for the I2C host controller.

1. Introduction

The Advanced Configuration and Power Interface (ACPI) provides a standard interface between an operating system and platform firmware. Hardware Identification (HID) strings allow the OS to load appropriate drivers. The 80860F14 ID (vendor 8086 = Intel Corporation) appears in the DSDT (Differentiated System Description Table) of many low-power Intel SoCs. This code defines a DSDT (Differentiated System Description

4.3. Other OSes (BSD, ChromeOS)