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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-19 12:15:33 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-19 12:15:33 -0700 |
commit | a84d2d2906f983fb80f5dcc3e8e7c3ad70aa9f0d (patch) | |
tree | 26d5ca2e6f2e799d858a18bccaa7c3f42f7d3fe3 /Documentation | |
parent | b5d72dda8976e878be47415b94bca8465d1fa22d (diff) | |
parent | bdfeb0ccea1a12b58299b95eb0f28e2aa26de4c2 (diff) |
Merge tag 'csky-for-linus-5.3-rc1' of git://github.com/c-sky/csky-linux
Pull arch/csky pupdates from Guo Ren:
"This round of csky subsystem gives two features (ASID algorithm
update, Perf pmu record support) and some fixups.
ASID updates:
- Revert mmu ASID mechanism
- Add new asid lib code from arm
- Use generic asid algorithm to implement switch_mm
- Improve tlb operation with help of asid
Perf pmu record support:
- Init pmu as a device
- Add count-width property for csky pmu
- Add pmu interrupt support
- Fix perf record in kernel/user space
- dt-bindings: Add csky PMU bindings
Fixes:
- Fixup no panic in kernel for some traps
- Fixup some error count in 810 & 860.
- Fixup abiv1 memset error"
* tag 'csky-for-linus-5.3-rc1' of git://github.com/c-sky/csky-linux:
csky: Fixup abiv1 memset error
csky: Improve tlb operation with help of asid
csky: Use generic asid algorithm to implement switch_mm
csky: Add new asid lib code from arm
csky: Revert mmu ASID mechanism
dt-bindings: csky: Add csky PMU bindings
dt-bindings: interrupt-controller: Update csky mpintc
csky: Fixup some error count in 810 & 860.
csky: Fix perf record in kernel/user space
csky: Add pmu interrupt support
csky: Add count-width property for csky pmu
csky: Init pmu as a device
csky: Fixup no panic in kernel for some traps
csky: Select intc & timer drivers
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/csky/pmu.txt | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/csky/pmu.txt b/Documentation/devicetree/bindings/csky/pmu.txt new file mode 100644 index 000000000000..728d05ca6a1c --- /dev/null +++ b/Documentation/devicetree/bindings/csky/pmu.txt @@ -0,0 +1,38 @@ +=============================== +C-SKY Performance Monitor Units +=============================== + +C-SKY Performance Monitor is designed for ck807/ck810/ck860 SMP soc and +it could count cpu's events for helping analysis performance issues. + +============================ +PMU node bindings definition +============================ + + Description: Describes PMU + + PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: must be "csky,csky-pmu" + - interrupts + Usage: required + Value type: <u32 IRQ_TYPE_XXX> + Definition: must be pmu irq num defined by soc + - count-width + Usage: optional + Value type: <u32> + Definition: the width of pmu counter + +Examples: +--------- +#include <dt-bindings/interrupt-controller/irq.h> + + pmu: performace-monitor { + compatible = "csky,csky-pmu"; + interrupts = <23 IRQ_TYPE_EDGE_RISING>; + interrupt-parent = <&intc>; + count-width = <48>; + }; |