[v2] Support remoteproc fixed device index from DT aliases

[PATCH v2 0/2] Support remoteproc fixed device index from DT aliases

Arnaud Pouliquen posted 2 patches 1 week, 2 days ago

Diff against v3
Download series mbox

There is a newer version of this series

drivers/remoteproc/keystone_remoteproc.c |  2 +-
drivers/remoteproc/remoteproc_core.c     | 40 ++++++++++++++++++++++--
include/linux/remoteproc.h               |  3 ++
3 files changed, 42 insertions(+), 3 deletions(-)

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[PATCH v2 0/2] Support remoteproc fixed device index from DT aliases

Posted by Arnaud Pouliquen 1 week, 2 days ago

On systems with multiple remote processors, the remoteproc device
enumeration is not stable as it depends on the probe ordering.
As a result, the /sys/class/remoteproc/remoteproc<x> entries do not
always refer to the same remote processor instance, which complicates
userspace applications.

This series:

- Introduces support for "rproc" device tree aliases to fix remoteproc device
  names and their corresponding /sys/class/remoteproc/remoteproc<x> entries.
- Updates the keystone_remoteproc driver, which also uses DT aliases, to adopt
  a common RPROC_ALIAS definition. Although it already uses the "rproc" alias
  to construct the firmware name, the change proposed in this series should be
  compatible.

Please refer to the patch commit messages for details on the implementation.

Arnaud Pouliquen (2):
  remoteproc: core: support fixed device index from DT aliases
  remoteproc: keystone: use RPROC_ALIAS definition

 drivers/remoteproc/keystone_remoteproc.c |  2 +-
 drivers/remoteproc/remoteproc_core.c     | 40 ++++++++++++++++++++++--
 include/linux/remoteproc.h               |  3 ++
 3 files changed, 42 insertions(+), 3 deletions(-)


base-commit: 63804fed149a6750ffd28610c5c1c98cce6bd377
-- 
2.43.0