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interconnect: qcom: Add MSM8909 interconnect provider driver

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Add driver for interconnect busses found in MSM8909 based platforms.
The topology consists of three NoCs that are partially controlled by
a RPM processor.

In the downstream/vendor kernel from Qualcomm there is an additional
"mm-snoc". However, it actually ends up using the same RPM "snoc_clk"
as the normal "snoc". It looks like this is actually the same NoC
in hardware and the "mm-snoc" was only defined to assign a different
"qcom,util-fact" to increase bandwidth requests by a static margin.
In mainline we can represent this by assigning the equivalent "ab_coeff"
to all the nodes that are part of "mm-snoc" downstream.

Signed-off-by: Adam Skladowski <a39.skl@gmail.com>
[Stephan: Drop separate mm-snoc that exists downstream since it's
 actually the same NoC as SNoC in hardware, add qos_offset for BIMC,
 add ab_coeff for mm-snoc nodes and BIMC]
Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231220-icc-msm8909-v2-2-3b68bbed2891@kernkonzept.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
This commit is contained in:
Adam Skladowski 2023-12-20 11:38:50 +01:00 committed by Georgi Djakov
parent 47878b4512
commit 1cef9f2d1e
3 changed files with 1340 additions and 0 deletions
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9
drivers/interconnect/qcom/Kconfig
View file

@ -8,6 +8,15 @@ config INTERCONNECT_QCOM
config INTERCONNECT_QCOM_BCM_VOTER
tristate
config INTERCONNECT_QCOM_MSM8909
tristate "Qualcomm MSM8909 interconnect driver"
depends on INTERCONNECT_QCOM
depends on QCOM_SMD_RPM
select INTERCONNECT_QCOM_SMD_RPM
help
This is a driver for the Qualcomm Network-on-Chip on msm8909-based
platforms.
config INTERCONNECT_QCOM_MSM8916
tristate "Qualcomm MSM8916 interconnect driver"
depends on INTERCONNECT_QCOM

2
drivers/interconnect/qcom/Makefile
View file

@ -4,6 +4,7 @@ obj-$(CONFIG_INTERCONNECT_QCOM) += interconnect_qcom.o
interconnect_qcom-y := icc-common.o
icc-bcm-voter-objs := bcm-voter.o
qnoc-msm8909-objs := msm8909.o
qnoc-msm8916-objs := msm8916.o
qnoc-msm8939-objs := msm8939.o
qnoc-msm8974-objs := msm8974.o
@ -36,6 +37,7 @@ qnoc-x1e80100-objs := x1e80100.o
icc-smd-rpm-objs := smd-rpm.o icc-rpm.o icc-rpm-clocks.o
obj-$(CONFIG_INTERCONNECT_QCOM_BCM_VOTER) += icc-bcm-voter.o
obj-$(CONFIG_INTERCONNECT_QCOM_MSM8909) += qnoc-msm8909.o
obj-$(CONFIG_INTERCONNECT_QCOM_MSM8916) += qnoc-msm8916.o
obj-$(CONFIG_INTERCONNECT_QCOM_MSM8939) += qnoc-msm8939.o
obj-$(CONFIG_INTERCONNECT_QCOM_MSM8974) += qnoc-msm8974.o

1329
drivers/interconnect/qcom/msm8909.c Normal file
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