Georgi writes:
interconnect changes for 5.15
Here are changes for the 5.15-rc1 merge window consisting of interconnect
core and driver updates.
Framework change:
- Add sanity check to detect if node is already added to provider.
Driver changes:
- RPMh drivers probe function consolidation
- Add driver for SC8180x platforms
- Add support for SC8180x OSM L3
- Use driver-specific naming in OSM L3
Signed-off-by: Georgi Djakov <djakov@kernel.org>
* tag 'icc-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
interconnect: qcom: osm-l3: Use driver-specific naming
interconnect: qcom: osm-l3: Add sc8180x support
dt-bindings: interconnect: Add SC8180x to OSM L3 DT binding
interconnect: qcom: Add SC8180x providers
dt-bindings: interconnect: Add Qualcomm SC8180x DT bindings
interconnect: Sanity check that node isn't already on list
interconnect: qcom: icc-rpmh: Consolidate probe functions
This reverts commit f84f5b6f72, which is
causing regressions on some platforms, preventing them to boot or do a
clean reboot. This is because the above commit is sending also all the
zero bandwidth requests to turn off any resources that might be enabled
unnecessarily, but currently this may turn off interconnects that are
enabled by default, but with no consumer to keep them on.
Let's revert this for now as some platforms are not ready for such
change yet. In the future we can introduce some _ignore_unused option
that could keep also the unused resources on platforms that have only
partial interconnect support and also add .shutdown callbacks to deal
with disabling the resources in the right order.
Reported-by: Stephen Boyd <swboyd@chromium.org>
Reported-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/CAE-0n52iVgX0JjjnYi=NDg49xP961p=+W5R2bmO+2xwRceFhfA@mail.gmail.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
In situations were the developer screws up by e.g. not giving the OSM
nodes unique identifiers the interconnect framework might mix up nodes
between the OSM L3 provider and e.g. the RPMh provider.
The resulting callstack contains "qcom_icc_set", which is not unique to
the OSM L3 provider driver. Once the faulting qcom_icc_set() is
identified it's further confusing that "qcom_icc_node" is different
between the different drivers.
To avoid this confusion, rename the node struct and the setter in the
OSM L3 driver to include "osm_l3" in their names.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210725031414.3961227-1-bjorn.andersson@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
We're only adding BCMs to the commit list in aggregate(), but there are
cases where pre_aggregate() is called without subsequently calling
aggregate(). In particular, in icc_sync_state() when a node with initial
BW has zero requests. Since BCMs aren't added to the commit list in
these cases, we don't actually send the zero BW request to HW. So the
resources remain on unnecessarily.
Add BCMs to the commit list in pre_aggregate() instead, which is always
called even when there are no requests.
Fixes: 976daac4a1 ("interconnect: qcom: Consolidate interconnect RPMh support")
Signed-off-by: Mike Tipton <mdtipton@codeaurora.org>
Link: https://lore.kernel.org/r/20210721175432.2119-5-mdtipton@codeaurora.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
We currently only enforce BW floors for a subset of nodes in a path.
All BCMs that need updating are queued in the pre_aggregate/aggregate
phase. The first set() commits all queued BCMs and subsequent set()
calls short-circuit without committing anything. Since the floor BW
isn't set in sum_avg/max_peak until set(), then some BCMs are committed
before their associated nodes reflect the floor.
Set the floor as each node is being aggregated. This ensures that all
all relevant floors are set before the BCMs are committed.
Fixes: 266cd33b59 ("interconnect: qcom: Ensure that the floor bandwidth value is enforced")
Signed-off-by: Mike Tipton <mdtipton@codeaurora.org>
Link: https://lore.kernel.org/r/20210721175432.2119-4-mdtipton@codeaurora.org
[georgi: Removed unused variable]
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Georgi writes:
interconnect changes for 5.14
Here are changes for the 5.14-rc1 merge window consisting of interconnect
driver updates.
Driver changes:
- New driver for SC7280 platforms.
Signed-off-by: Georgi Djakov <djakov@kernel.org>
* tag 'icc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
interconnect: qcom: Add SC7280 interconnect provider driver
dt-bindings: interconnect: Add Qualcomm SC7280 DT bindings
