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| author | Stephan Gerhold <stephan@gerhold.net> | 2023-06-15 18:50:42 +0200 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2023-07-14 07:18:57 +0200 |
| commit | 8ddfa81d090c71fd6cb3cb8ca1d420c0da33a575 (patch) | |
| tree | b765e7b950478247de6b752c24890a6edf395535 /drivers/soc/qcom/Kconfig | |
| parent | rpmsg: qcom_smd: Use qcom_smem_is_available() (diff) | |
| download | linux-8ddfa81d090c71fd6cb3cb8ca1d420c0da33a575.tar.xz linux-8ddfa81d090c71fd6cb3cb8ca1d420c0da33a575.zip | |
soc: qcom: Add RPM processor/subsystem driver
Add a simple driver for the qcom,rpm-proc compatible that registers the
"smd-edge" and populates other children defined in the device tree.
Note that the DT schema belongs to the remoteproc subsystem while this
driver is added inside soc/qcom. I argue that the RPM *is* a remoteproc,
but as an implementation detail in Linux it can currently not benefit
from anything provided by the remoteproc subsystem. The RPM firmware is
usually already loaded and started by earlier components in the boot
chain and is not meant to be ever restarted.
To avoid breaking existing kernel configurations the driver is always
built when smd-rpm.c is also built. They belong closely together anyway.
To avoid build errors CONFIG_RPMSG_QCOM_SMD must be also built-in if
rpm-proc is.
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20230531-rpm-rproc-v3-9-a07dcdefd918@gerhold.net
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Diffstat (limited to 'drivers/soc/qcom/Kconfig')
| -rw-r--r-- | drivers/soc/qcom/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index e597799e8121..715348869d04 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -191,6 +191,7 @@ config QCOM_SMD_RPM tristate "Qualcomm Resource Power Manager (RPM) over SMD" depends on ARCH_QCOM || COMPILE_TEST depends on RPMSG + depends on RPMSG_QCOM_SMD || RPMSG_QCOM_SMD=n help If you say yes to this option, support will be included for the Resource Power Manager system found in the Qualcomm 8974 based |