| Message ID | 20190714162359.56390-3-andriy.shevchenko@linux.intel.com |
|---|---|
| State | Accepted |
| Commit | e3be52ceac7fab098c47d1b7fd2f1456e8e43f7e |
| Delegated to: | Bin Meng |
| Headers | show |
| Series | [U-Boot,v2,1/4] x86: acpi: Add CSRT description | expand |
On Mon, Jul 15, 2019 at 12:24 AM Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote: > > ACPI has a capability to specify DMA parameters for DMA channel consumers. > To enable this for Intel Edison, describe GP DMA device in ACPI table > in order to get an ACPI handle to it in OS. > > This works in conjunction with CSRT, which must be in align with DSDT. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > --- > .../asm/arch-tangier/acpi/southcluster.asl | 22 +++++++++++++++++++ > 1 file changed, 22 insertions(+) > Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
On Thu, Jul 18, 2019 at 10:27 PM Bin Meng <bmeng.cn@gmail.com> wrote: > > On Mon, Jul 15, 2019 at 12:24 AM Andy Shevchenko > <andriy.shevchenko@linux.intel.com> wrote: > > > > ACPI has a capability to specify DMA parameters for DMA channel consumers. > > To enable this for Intel Edison, describe GP DMA device in ACPI table > > in order to get an ACPI handle to it in OS. > > > > This works in conjunction with CSRT, which must be in align with DSDT. > > > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > > --- > > .../asm/arch-tangier/acpi/southcluster.asl | 22 +++++++++++++++++++ > > 1 file changed, 22 insertions(+) > > > > Reviewed-by: Bin Meng <bmeng.cn@gmail.com> applied to u-boot-x86, thanks!
diff --git a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl index 241d4ac801..0ec195b51b 100644 --- a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl +++ b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl @@ -431,6 +431,28 @@ Device (PCI0) } } } + + Device (GDMA) + { + Name (_ADR, 0x00150000) + Name (_HID, "808611A2") + Name (_UID, Zero) + + Method (_STA, 0, NotSerialized) + { + Return (STA_VISIBLE) + } + + Method (_CRS, 0, Serialized) + { + Name (RBUF, ResourceTemplate () + { + Memory32Fixed(ReadWrite, 0xFF192000, 0x00001000) + Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 32 } + }) + Return (RBUF) + } + } } Device (FLIS)
ACPI has a capability to specify DMA parameters for DMA channel consumers. To enable this for Intel Edison, describe GP DMA device in ACPI table in order to get an ACPI handle to it in OS. This works in conjunction with CSRT, which must be in align with DSDT. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- .../asm/arch-tangier/acpi/southcluster.asl | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+)