diff options
| author | Duncan Laurie <dlaurie@chromium.org> | 2015-01-14 12:18:46 -0800 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2015-04-10 20:13:56 +0200 |
| commit | cf544ac1f9a62cc58e3911c23a0b905950a0ff2f (patch) | |
| tree | 0bf8be06cae7dfdcc2f46d030113bde0a4e1a292 /src/soc/intel | |
| parent | b8a7b71e611fed87a41cc940baa1e42624f97657 (diff) | |
| download | coreboot-cf544ac1f9a62cc58e3911c23a0b905950a0ff2f.tar.xz | |
broadwell: Remove XHCI workarounds on WPT
The workarounds in ACPI methods for D0/D3 transition that are
used on haswell/LPT do not all apply to broadwell/WPT.
BUG=chrome-os-partner:28234
BRANCH=broadwell
TEST=build and boot on samus, test USB functionality and wake
and ensure the device still does into D3 state
Change-Id: Ic3a75f5bf50e826ade7d942b48cfebb75cf976e6
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: 1b54d105957ee80ca34048c42fb8f241731281cf
Original-Change-Id: I877afd51fc6c9b7906e923b893fc31bdf2cd1090
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/240850
Original-Reviewed-by: Shawn N <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/9488
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/broadwell/acpi/xhci.asl | 68 |
1 files changed, 46 insertions, 22 deletions
diff --git a/src/soc/intel/broadwell/acpi/xhci.asl b/src/soc/intel/broadwell/acpi/xhci.asl index 9d870e578c..c41275ccd2 100644 --- a/src/soc/intel/broadwell/acpi/xhci.asl +++ b/src/soc/intel/broadwell/acpi/xhci.asl @@ -35,6 +35,14 @@ Device (XHCI) Offset (0x10), , 16, XMEM, 16, // MEM_BASE + Offset (0x40), + , 11, + SWAI, 1, + , 20, + Offset (0x44), + , 12, + SAIP, 2, + , 18, Offset (0x74), D0D3, 2, , 6, @@ -242,22 +250,30 @@ Device (XHCI) Store (0, ^D0D3) } - // Clear PCI 0xB0[14:13] - Store (0, ^MB13) - Store (0, ^MB14) + if (LNot (\ISWP())) { + // Clear PCI 0xB0[14:13] + Store (0, ^MB13) + Store (0, ^MB14) - // Clear MMIO 0x816C[14,2] - Store (0, CLK0) - Store (0, CLK1) + // Clear MMIO 0x816C[14,2] + Store (0, CLK0) + Store (0, CLK1) - // Set MMIO 0x8154[31] - Store (1, CLK2) + // Set MMIO 0x8154[31] + Store (1, CLK2) - // Handle per-port reset if needed - LPS0 () + // Handle per-port reset if needed + LPS0 () - // Set MMIO 0x80e0[15] - Store (1, AX15) + // Set MMIO 0x80e0[15] + Store (1, AX15) + + // Clear PCI CFG offset 0x40[11] + Store (0, ^SWAI) + + // Clear PCI CFG offset 0x44[13:12] + Store (0, ^SAIP) + } Return () } @@ -297,19 +313,27 @@ Device (XHCI) Store (0, ^D0D3) } - // Set PCI 0xB0[14:13] - Store (1, ^MB13) - Store (1, ^MB14) + if (LNot (\ISWP())) { + // Set PCI 0xB0[14:13] + Store (1, ^MB13) + Store (1, ^MB14) - // Set MMIO 0x816C[14,2] - Store (1, CLK0) - Store (1, CLK1) + // Set MMIO 0x816C[14,2] + Store (1, CLK0) + Store (1, CLK1) - // Clear MMIO 0x8154[31] - Store (0, CLK2) + // Clear MMIO 0x8154[31] + Store (0, CLK2) - // Clear MMIO 0x80e0[15] - Store (0, AX15) + // Clear MMIO 0x80e0[15] + Store (0, AX15) + + // Set PCI CFG offset 0x40[11] + Store (1, ^SWAI) + + // Set PCI CFG offset 0x44[13:12] + Store (1, ^SAIP) + } // Put device in D3 Store (3, ^D0D3) |