This patch set is to support bucket in icc-rpm driver, so it implements
the similar mechanism in the icc-rpmh driver.
It uses interconnect path tag to indicate the bandwidth voting is for
which buckets, and there have three kinds of buckets: AWC, WAKE and
SLEEP, finally the wake and sleep bucket values are used to set the
corresponding clock (active and sleep clocks). So far, we keep the AWC
bucket but doesn't really use it.
Link: https://lore.kernel.org/r/20220712015929.2789881-1-leo.yan@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
This patchset is to support i.MX8MP NoC settings, i.MX8MP NoC initial
value after power up is invalid, need set a valid value after related
power domain up.
This patchset also includes two patch[1,2] during my development to enable
the ICC feature for i.MX8MP.
I not include ddrc DVFS in this patchset, ths patchset is only to
support NoC value mode/priority/ext_control being set to a valid value
that suggested by i.MX Chip Design Team. The value is same as NXP
downstream one inside Arm Trusted Firmware:
https://source.codeaurora.org/external/imx/imx-atf/tree/plat/imx/imx8m/i/gpc.c?h=lf_v2.4#n97
Link: https://lore.kernel.org/r/20220703091132.1412063-1-peng.fan@oss.nxp.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
This commit uses buckets for support bandwidth and clock rates. It
introduces a new function qcom_icc_bus_aggregate() to calculate the
aggregate average and peak bandwidths for every bucket, and also it
calculates the maximum value of aggregated average bandwidth across all
buckets.
The maximum aggregated average is used to calculate the final bandwidth
requests. And we can set the clock rate per bucket, we use SLEEP bucket
as default bucket if a platform doesn't enable the interconnect path
tags in DT binding; otherwise, we use WAKE bucket to set active clock
and use SLEEP bucket for other clocks. So far we don't use AMC bucket.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Link: https://lore.kernel.org/r/20220712015929.2789881-6-leo.yan@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
The current interconnect rpm driver uses a single aggregate bandwidth to
calculate the clock rates for both active and sleep clocks; therefore,
it has no chance to separate bandwidth requests for these two kinds of
clocks.
This patch studies the implementation from interconnect rpmh driver to
support multiple buckets. The rpmh driver provides three buckets for
AMC, WAKE, and SLEEP; this driver only needs to use WAKE and SLEEP
buckets, but we keep the same way with rpmh driver, this can allow us to
reuse the DT binding and avoid to define duplicated data structures.
This patch introduces two callbacks: qcom_icc_pre_bw_aggregate() is used
to clean up bucket values before aggregate bandwidth requests, and
qcom_icc_bw_aggregate() is to aggregate bandwidth for buckets.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Link: https://lore.kernel.org/r/20220712015929.2789881-5-leo.yan@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Pull char / misc / other smaller driver subsystem updates from Greg KH:
"Here is the large set of char, misc, and other driver subsystem
updates for 5.19-rc1. The merge request for this has been delayed as I
wanted to get lots of linux-next testing due to some late arrivals of
changes for the habannalabs driver.
Highlights of this merge are:
- habanalabs driver updates for new hardware types and fixes and
other updates
- IIO driver tree merge which includes loads of new IIO drivers and
cleanups and additions
- PHY driver tree merge with new drivers and small updates to
existing ones
- interconnect driver tree merge with fixes and updates
- soundwire driver tree merge with some small fixes
- coresight driver tree merge with small fixes and updates
- mhi bus driver tree merge with lots of updates and new device
support
- firmware driver updates
- fpga driver updates
- lkdtm driver updates (with a merge conflict, more on that below)
- extcon driver tree merge with small updates
- lots of other tiny driver updates and fixes and cleanups, full
details in the shortlog.
All of these have been in linux-next for almost 2 weeks with no
reported problems"
* tag 'char-misc-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (387 commits)
habanalabs: use separate structure info for each error collect data
habanalabs: fix missing handle shift during mmap
habanalabs: remove hdev from hl_ctx_get args
habanalabs: do MMU prefetch as deferred work
habanalabs: order memory manager messages
habanalabs: return -EFAULT on copy_to_user error
habanalabs: use NULL for eventfd
habanalabs: update firmware header
habanalabs: add support for notification via eventfd
habanalabs: add topic to memory manager buffer
habanalabs: handle race in driver fini
habanalabs: add device memory scrub ability through debugfs
habanalabs: use unified memory manager for CB flow
habanalabs: unified memory manager new code for CB flow
habanalabs/gaudi: set arbitration timeout to a high value
habanalabs: add put by handle method to memory manager
habanalabs: hide memory manager page shift
habanalabs: Add separate poll interval value for protocol
habanalabs: use get_task_pid() to take PID
habanalabs: add prefetch flag to the MAP operation
...
This patch set is to address two clock rate setting issues.
The first patch is to fix a potential cached clock rate mismatching
issue, the issue can lead to the clock rate is missed to be set. Note,
since this potential issue requires specific time window and certain
condition (consumers need to request the same bandwidth) to produce,
the patch is based on analysis but not a real trace log.
The second patch is an extension to cache clock rates for active and
sleep clocks separately, with this change it gives us possibility to set
active and sleep clock with different clock rates.
* icc-rpm
interconnect: qcom: icc-rpm: Fix for cached clock rate
interconnect: qcom: icc-rpm: Cache every clock rate
Link: https://lore.kernel.org/r/20220416031029.693211-1-leo.yan@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
This contains a few fixes for the sc8180x interconnect provider driver to make
it functional.
* icc-sc8180x
dt-bindings: interconnect: Add SC8180X QUP0 virt provider
interconnect: qcom: sc8180x: Modernize sc8180x probe
interconnect: qcom: sc8180x: Fix QUP0 nodes
interconnect: qcom: sc8180x: Mark some BCMs keepalive
Link: https://lore.kernel.org/r/20220503211925.1022169-1-bjorn.andersson@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
The Qualcomm interconnect providers started off defining nodes and BCMs
using the DEFINE_QNODE() and DEFINE_QBCM() macros. Unfortunately this
results in a block of long lines that are hard to read, a transition to
explicitly stated definition has been made for newly introduced
platforms.
Transition the SC8180X interconnect provider driver to this style as
well, to make it easier to read while debugging interconnect related
issues.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220503225300.1141814-1-bjorn.andersson@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
