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authorLinus Torvalds <torvalds@linux-foundation.org>2021-04-26 11:03:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-04-26 11:03:17 -0700
commit8e3a3249502d8ff92d73d827fb41dd44c5a16f76 (patch)
tree033e620f253013f37426c51fdb1699e65dc9770d /Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
parent90035c28f17d59be660b9992757d09853ab203ec (diff)
parente2cb6b891ad2b8caa9131e3be70f45243df82a80 (diff)
downloadlinux-8e3a3249502d8ff92d73d827fb41dd44c5a16f76.tar.bz2
Merge tag 'char-misc-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH: "Here is the big set of various smaller driver subsystem updates for 5.13-rc1. Major bits in here are: - habanalabs driver updates - hwtracing driver updates - interconnect driver updates - mhi driver updates - extcon driver updates - fpga driver updates - new binder features added - nvmem driver updates - phy driver updates - soundwire driver updates - smaller misc and char driver fixes and updates. - bluetooth driver bugfix that maintainer wanted to go through this tree. All of these have been in linux-next with no reported issues" * tag 'char-misc-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits) bluetooth: eliminate the potential race condition when removing the HCI controller coresight: etm-perf: Fix define build issue when built as module phy: Revert "phy: ti: j721e-wiz: add missing of_node_put" phy: ti: j721e-wiz: Add missing include linux/slab.h phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove() stm class: Use correct UUID APIs intel_th: pci: Add Alder Lake-M support intel_th: pci: Add Rocket Lake CPU support intel_th: Consistency and off-by-one fix intel_th: Constify attribute_group structs intel_th: Constify all drvdata references stm class: Remove an unused function habanalabs/gaudi: Fix uninitialized return code rc when read size is zero greybus: es2: fix kernel-doc warnings mei: me: add Alder Lake P device id. dw-xdata-pcie: Update outdated info and improve text format dw-xdata-pcie: Fix documentation build warns fbdev: zero-fill colormap in fbcmap.c firmware: qcom-scm: Fix QCOM_SCM configuration speakup: i18n: Switch to kmemdup_nul() in spk_msg_set() ...
Diffstat (limited to 'Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt')
-rw-r--r--Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt24
1 files changed, 23 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
index 4284d293fa61..0acdfa6d62a4 100644
--- a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
+++ b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
@@ -7,13 +7,24 @@ changes from passing through the bridge. The controller can also
couple / enable the bridges which allows traffic to pass through the
bridge normally.
+Xilinx LogiCORE Dynamic Function eXchange(DFX) AXI shutdown manager
+Softcore is compatible with the Xilinx LogiCORE pr-decoupler.
+
+The Dynamic Function eXchange AXI shutdown manager prevents AXI traffic
+from passing through the bridge. The controller safely handles AXI4MM
+and AXI4-Lite interfaces on a Reconfigurable Partition when it is
+undergoing dynamic reconfiguration, preventing the system deadlock
+that can occur if AXI transactions are interrupted by DFX
+
The Driver supports only MMIO handling. A PR region can have multiple
PR Decouplers which can be handled independently or chained via decouple/
decouple_status signals.
Required properties:
- compatible : Should contain "xlnx,pr-decoupler-1.00" followed by
- "xlnx,pr-decoupler"
+ "xlnx,pr-decoupler" or
+ "xlnx,dfx-axi-shutdown-manager-1.00" followed by
+ "xlnx,dfx-axi-shutdown-manager"
- regs : base address and size for decoupler module
- clocks : input clock to IP
- clock-names : should contain "aclk"
@@ -22,6 +33,7 @@ See Documentation/devicetree/bindings/fpga/fpga-region.txt and
Documentation/devicetree/bindings/fpga/fpga-bridge.txt for generic bindings.
Example:
+Partial Reconfig Decoupler:
fpga-bridge@100000450 {
compatible = "xlnx,pr-decoupler-1.00",
"xlnx-pr-decoupler";
@@ -30,3 +42,13 @@ Example:
clock-names = "aclk";
bridge-enable = <0>;
};
+
+Dynamic Function eXchange AXI shutdown manager:
+ fpga-bridge@100000450 {
+ compatible = "xlnx,dfx-axi-shutdown-manager-1.00",
+ "xlnx,dfx-axi-shutdown-manager";
+ regs = <0x10000045 0x10>;
+ clocks = <&clkc 15>;
+ clock-names = "aclk";
+ bridge-enable = <0>;
+ };