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| author | Frederic Barrat <fbarrat@linux.vnet.ibm.com> | 2016-03-21 22:32:48 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-04-22 14:45:44 +0300 |
| commit | e009a7e858fed215cb4eed5174a31cadd42d8797 (patch) | |
| tree | 374b3df8a670dfbc72c4eb960f6b488a916958ea /Documentation | |
| parent | bb62bad623deb7952aef13fcbe065fde5d1f03e5 (diff) | |
| download | linux-e009a7e858fed215cb4eed5174a31cadd42d8797.tar.xz | |
cxl: Allow initialization on timebase sync failures
Failure to synchronize the PSL timebase currently prevents the
initialization of the cxl card, thus rendering the card useless. This
is too extreme for a feature which is rarely used, if at all. No
hardware AFUs or software is currently using PSL timebase.
This patch still tries to synchronize the PSL timebase when the card
is initialized, but ignores the error if it can't. Instead, it reports
a status via /sys.
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-cxl | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/testing/sysfs-class-cxl index 7fd737eed38a..4ba0a2a61926 100644 --- a/Documentation/ABI/testing/sysfs-class-cxl +++ b/Documentation/ABI/testing/sysfs-class-cxl @@ -233,3 +233,11 @@ Description: read/write 0 = don't trust, the image may be different (default) 1 = trust that the image will not change. Users: https://github.com/ibm-capi/libcxl + +What: /sys/class/cxl/<card>/psl_timebase_synced +Date: March 2016 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Returns 1 if the psl timebase register is synchronized + with the core timebase register, 0 otherwise. +Users: https://github.com/ibm-capi/libcxl |