Update root bus section to include information on how to
enable PCIe RCEC for any given machine.
Signed-off-by: Mayuresh Chitale <mchit...@ventanamicro.com>
---
docs/pcie.txt | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/docs/pcie.txt b/docs/pcie.txt
index 89e3502075..da5d7b676b 100644
--- a/docs/pcie.txt
+++ b/docs/pcie.txt
@@ -57,12 +57,14 @@ Place only the following kinds of devices directly on the
Root Complex:
(4) Extra Root Complexes (pxb-pcie), if multiple PCI Express Root Buses
are needed.
+ (5) Root complex event collector (pcie-rcec).
+
pcie.0 bus
- ----------------------------------------------------------------------------
- | | | |
- ----------- ------------------ ------------------- --------------
- | PCI Dev | | PCIe Root Port | | PCIe-PCI Bridge | | pxb-pcie |
- ----------- ------------------ ------------------- --------------
+
------------------------------------------------------------------------------------
+ | | | |
|
+ ----------- ------------------ ------------------- --------------
-------------
+ | PCI Dev | | PCIe Root Port | | PCIe-PCI Bridge | | pxb-pcie | |
PCIe RCEC |
+ ----------- ------------------ ------------------- --------------
-------------
2.1.1 To plug a device into pcie.0 as a Root Complex Integrated Endpoint use:
-device <dev>[,bus=pcie.0]
@@ -72,6 +74,10 @@ Place only the following kinds of devices directly on the
Root Complex:
connected to the pcie.1 bus:
-device
ioh3420,id=root_port1[,bus=pcie.1][,chassis=x][,slot=y][,addr=z]
\
-device pcie-pci-bridge,id=pcie_pci_bridge1,bus=pcie.1
+2.1.3 To plug a PCIe RCEC into pcie.0 use:
+ -device pcie-rcec
+ PCIe RCEC must always be the first device on the root bus, pcie.0. So
any RCiEP
+ devices plugged into pcie.0 must appear after the rcec in the command
line.
2.2 PCI Express only hierarchy
--
2.17.1
