6470 2014-06-20 16:14:27 +0000 Specify ACPI SPI UID=0 2014-07-10 23:21:34 +0000 1 1 12 Hardware Platforms MinnowBoard MAX Firmware minnowmax-edk2 unspecified MinnowBoard Max Multiple VERIFIED FIXED Medium normal Production Release 1 dvhart dvhart sjolley.yp.pm --- --- No (bug/feature does not impact docs) oldest_to_newest 44127 0 dvhart 2014-06-20 16:14:27 +0000 The SPI bus number changes in the OS depending on if we are using PCI or ACPI enumeration. Currently PCI=0 and ACPI=32766. This is due to ACPI being dynamically numbered as the firmware does not specify the UID for the ACPI SPI master device. Please update the ACPI table to specify a UID of 0 for the SPI device: Device (SPI0) { Name(_HID, "80860F0E") Name(_UID, "0") ... } This will allow us to use the same SPI test driver for ACPI and PCI enumeration. It will also avoid unnecessary confusion for our users, and reduce the support and documentation burden on us. 44130 1 dvhart 2014-06-20 16:47:06 +0000 For the MinnowMax firmware, this is the SPI1 device (there is no SPI0 device): Device (SPI1) { Name (_ADR, Zero) // _ADR: Address Name (_HID, "80860F0E") // _HID: Hardware ID Name (_CID, "80860F0E") // _CID: Compatible ID Can we add: Name (_UID, "0") // Static bus number assignment 44308 2 tim.he 2014-07-03 08:02:28 +0000 the issue should be fixed by MNW2_IFWI_X64_R_2014_07_02_1150_SecEnabled.bin drop. Darren, please test and verify it at your end. 44436 3 dvhart 2014-07-10 23:20:51 +0000 Fixed in 07-10 firmware image. 44437 4 dvhart 2014-07-10 23:21:34 +0000 .