summaryrefslogtreecommitdiffstats
path: root/doc
diff options
context:
space:
mode:
authorBin Meng <bmeng.cn@gmail.com>2016-05-07 07:46:14 -0700
committerBin Meng <bmeng.cn@gmail.com>2016-05-23 15:18:00 +0800
commitd4e61f505b8fd8662142b6e27ef443f88f73176e (patch)
treee5c397e785e36bf031e20aa6e1cdf967bacd00d0 /doc
parent07ac84eaaa5daeae4a56ff70649a3e50fc470db5 (diff)
downloadblackbird-obmc-uboot-d4e61f505b8fd8662142b6e27ef443f88f73176e.tar.gz
blackbird-obmc-uboot-d4e61f505b8fd8662142b6e27ef443f88f73176e.zip
x86: irq: Enable SCI on IRQ9
By default SCI is disabled after power on. ACTL is the register to enable SCI and route it to PIC/APIC. To support both ACPI in PIC mode and APIC mode, configure SCI to use IRQ9. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Tested-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'doc')
-rw-r--r--doc/device-tree-bindings/misc/intel,irq-router.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/misc/intel,irq-router.txt b/doc/device-tree-bindings/misc/intel,irq-router.txt
index e4d8ead2ee..04ad34654c 100644
--- a/doc/device-tree-bindings/misc/intel,irq-router.txt
+++ b/doc/device-tree-bindings/misc/intel,irq-router.txt
@@ -14,6 +14,11 @@ Required properties :
"ibase": IRQ routing is in the memory-mapped IBASE register block
- intel,ibase-offset : IBASE register offset in the interrupt router's PCI
configuration space, required only if intel,pirq-config = "ibase".
+- intel,actl-8bit : If ACTL (ACPI control) register width is 8-bit, this must
+ be specified. The 8-bit ACTL register is seen on ICH series chipset, like
+ ICH9/Panther Point/etc. On Atom chipset it is a 32-bit register.
+- intel,actl-addr : ACTL (ACPI control) register offset. ACTL can be either
+ in the interrupt router's PCI configuration space, or IBASE.
- intel,pirq-link : Specifies the PIRQ link information with two cells. The
first cell is the register offset that controls the first PIRQ link routing.
The second cell is the total number of PIRQ links the router supports.
OpenPOWER on IntegriCloud