IDP/ARK-2151S/Issue

Fixed ACPI conflict with SMBus

• Two options to add the acpi_enforce_resources=lax into kernel cmdline.

 1. modify the BOOTX64.conf under EFI/BOOT directly on your bootable disk
 2. modify grub-usb.conf and the rest grub-xx.conf under 
    Project/layers/wr-idp/wr-idp-devkit/recipes-uefi/grub-efi/files/grub-conf 
    for your image just add acpi_enforce_resources=lax behind /bzImage

• Two options to load i2c-dev by default

  1. add modprobe i2c-dev in /etc/rc.local
  2. make i2c-dev as built-in driver instead of kernel module

• ACPI I/O resource conflict with SMBus

Modify BIOS setting for supporting Intel AC7260 wireless module

BIOS change list:

chipset>PCI Express Configuration>PCI Express Root Port 1>ASPM Support>disabled
chipset>PCI Express Configuration>PCI Express Root Port 1>L1 Substates> disabled
chipset>PCI Express Configuration>PCI Express Root Port 1>PME SCI>Enabled
chipset>PCI Express Configuration>PCI Express Root Port 1>Hot Plug> disabled
chipset>PCI Express Configuration>PCI Express Root Port 1>PCIe Speed>Gen1

chipset>PCI Express Configuration>PCI Express Root Port 2>ASPM Support>disabled
chipset>PCI Express Configuration>PCI Express Root Port 2>L1 Substates> disabled
chipset>PCI Express Configuration>PCI Express Root Port 2>PME SCI>Enabled
chipset>PCI Express Configuration>PCI Express Root Port 2>Hot Plug> disabled
chipset>PCI Express Configuration>PCI Express Root Port 2>PCIe Speed>Gen1

chipset>PCI Express Configuration>PCI Express Root Port 3>ASPM Support>disabled
chipset>PCI Express Configuration>PCI Express Root Port 3>L1 Substates> disabled
chipset>PCI Express Configuration>PCI Express Root Port 3>PME SCI>Enabled
chipset>PCI Express Configuration>PCI Express Root Port 3>Hot Plug> disabled
chipset>PCI Express Configuration>PCI Express Root Port 3>PCIe Speed>Gen1

chipset>PCI Express Configuration>PCI Express Root Port 6>ASPM Support>disabled
chipset>PCI Express Configuration>PCI Express Root Port 6>L1 Substates> disabled
chipset>PCI Express Configuration>PCI Express Root Port 6>PME SCI>Enabled
chipset>PCI Express Configuration>PCI Express Root Port 6>Hot Plug> disabled
chipset>PCI Express Configuration>PCI Express Root Port 6>PCIe Speed>Gen1