diff options
| author | Andy Shevchenko <[email protected]> | 2019-02-26 13:43:15 +0200 |
|---|---|---|
| committer | Bin Meng <[email protected]> | 2019-03-10 08:17:00 +0800 |
| commit | c652dd15571e6c7df35ff30eeb8b3e2b7e6300ba (patch) | |
| tree | e97e0f4a1e7ee10606f2a54b151da0c91d497de2 | |
| parent | 1d2825aa30b63e01ac353ebf36159fda00e33a05 (diff) | |
x86: acpi: Add DMA descriptors for I2C1 on Intel Tangier
Intel Tangier SoC has a general purpose DMA which can serve to speed up
communications on SPI and I2C serial buses.
Provide DMA descriptors to utilize this capability in the future.
Note, I2C6, which is available to user, has no DMA request lines connected.
Signed-off-by: Andy Shevchenko <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
| -rw-r--r-- | arch/x86/include/asm/arch-tangier/acpi/southcluster.asl | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl index 8cb6f64b3dd..8b5b709045b 100644 --- a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl +++ b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl @@ -222,6 +222,17 @@ Device (PCI0) { Return (STA_VISIBLE) } + + Name (RBUF, ResourceTemplate() + { + FixedDMA(0x0009, 0x0000, Width32bit, ) + FixedDMA(0x0008, 0x0001, Width32bit, ) + }) + + Method (_CRS, 0, NotSerialized) + { + Return (RBUF) + } } Device (I2C6) |