linux-toradex.git/drivers/interconnect/qcom/msm8974.c, branch v5.14

interconnect: qcom: msm8974: Don't boost the NoC rate during boot

2020-11-17T22:21:47+00:00

It has been reported that on Fairphone 2 (msm8974-based), increasing
the clock rate for some of the NoCs during boot may lead to hangs.
Let's restore the original behavior and not touch the clock rate of
any of the NoCs to fix the regression.

Reported-by: Luca Weiss 
Tested-by: Luca Weiss 
Fixes: b1d681d8d324 ("interconnect: Add sync state support")
Link: https://lore.kernel.org/r/20201109124512.10776-1-georgi.djakov@linaro.org
Signed-off-by: Georgi Djakov

interconnect: qcom: msm8974: Prevent integer overflow in rate

2020-11-17T22:18:05+00:00

When sync_state support got introduced recently, by default we try to
set the NoCs to run initially at maximum rate. But as these values are
aggregated, we may end with a really big clock rate value, which is
then converted from "u64" to "long" during the clock rate rounding.
But on 32bit platforms this may result an overflow. Fix it by making
sure that the rate is within range.

Reported-by: Luca Weiss 
Reviewed-by: Brian Masney 
Link: https://lore.kernel.org/r/20201106144847.7726-1-georgi.djakov@linaro.org
Signed-off-by: Georgi Djakov

interconnect: qcom: Use the standard aggregate function

2019-12-16T07:25:24+00:00

Now we have a common function for standard aggregation, so let's use it,
instead of duplicating the code.

Reviewed-by: Brian Masney 
Reviewed-by: Bjorn Andersson 
Reviewed-by: Evan Green 
Signed-off-by: Georgi Djakov

interconnect: qcom: Use the new common helper for node removal

2019-12-16T07:25:23+00:00

There is a new helper function for removing all nodes. Let's use it instead
of duplicating the code.

Reviewed-by: Bjorn Andersson 
Signed-off-by: Georgi Djakov

interconnect: qcom: msm8974: Walk the list safely on node removal

2019-12-12T09:28:54+00:00

As we will remove items off the list using list_del(), we need to use the
safe version of list_for_each_entry().

Fixes: 4e60a9568dc6 ("interconnect: qcom: add msm8974 driver")
Reported-by: Dmitry Osipenko 
Reviewed-by: Bjorn Andersson 
Signed-off-by: Georgi Djakov 
Link: https://lore.kernel.org/r/20191212075332.16202-5-georgi.djakov@linaro.org
Signed-off-by: Greg Kroah-Hartman

interconnect: qcom: add msm8974 driver

2019-11-08T16:14:06+00:00

Add driver for the Qualcomm MSM8974 interconnect providers that support
setting system bandwidth requirements between various network-on-chip
fabrics.

Signed-off-by: Brian Masney 
Reviewed-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20191024103054.9770-3-masneyb@onstation.org
Signed-off-by: Georgi Djakov 
Link: https://lore.kernel.org/r/20191108125349.24191-3-georgi.djakov@linaro.org
Signed-off-by: Greg Kroah-Hartman