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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-02-26 13:43:15 +0200
committerBin Meng <bmeng.cn@gmail.com>2019-03-10 08:17:00 +0800
commitc652dd15571e6c7df35ff30eeb8b3e2b7e6300ba (patch)
treee97e0f4a1e7ee10606f2a54b151da0c91d497de2
parent1d2825aa30b63e01ac353ebf36159fda00e33a05 (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 <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
-rw-r--r--arch/x86/include/asm/arch-tangier/acpi/southcluster.asl11
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 8cb6f64b3d..8b5b709045 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)