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In the cases where the power domain connected to logics is allowed to
transition from a level(L)-->power collapse(0)-->retention(1) or
vice versa retention(1)-->power collapse(0)-->level(L) will cause the
logic to lose the configurations. The ARC does not support retention
to collapse transition on MxC rails.
The targets from SM8450 onwards the PLL logics of clock controllers are
connected to MxC rails and the recommended configurations are carried
out during the clock controller probes. The MxC transition as mentioned
above should be skipped to ensure the PLL settings are intact across
clock controller power on & off.
On older targets that do not split MX into MxA and MxC does not collapse
the logic and it is parked always at RETENTION, thus this issue is never
observed on those targets.
Cc: stable@vger.kernel.org # v5.17
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Taniya Das <quic_tdas@quicinc.com>
Link: https://lore.kernel.org/r/20240625-avoid_mxc_retention-v2-1-af9c2f549a5f@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
- Log a message when unused PM domains gets disabled
- Scale down parent/child performance states in the reverse order
Providers:
- qcom: rpmpd: Add power domains support for MSM8974, MSM8974PRO, PMA8084
and PM8841
- renesas: rcar-gen4-sysc: Reduce atomic delays
- renesas: rcar-sysc: Adjust the waiting time to cover the worst case
- renesas: r8a779h0-sysc: Add support for the r8a779h0 PM domains
- imx: imx8mp-blk-ctrl: Add the fdcc clock to the hdmimix domains
- imx: imx8mp-blk-ctrl: Error out if domains are missing in DT
Improve support for multiple PM domains:
- Add two helper functions to attach/detach multiple PM domains
- Convert a couple of drivers to use the new helper functions
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Merge tag 'pmdomain-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain updates from Ulf Hansson:
"Core:
- Log a message when unused PM domains gets disabled
- Scale down parent/child performance states in the reverse order
Providers:
- qcom: rpmpd: Add power domains support for MSM8974, MSM8974PRO,
PMA8084 and PM8841
- renesas: rcar-gen4-sysc: Reduce atomic delays
- renesas: rcar-sysc: Adjust the waiting time to cover the worst case
- renesas: r8a779h0-sysc: Add support for the r8a779h0 PM domains
- imx: imx8mp-blk-ctrl: Add the fdcc clock to the hdmimix domains
- imx: imx8mp-blk-ctrl: Error out if domains are missing in DT
Improve support for multiple PM domains:
- Add two helper functions to attach/detach multiple PM domains
- Convert a couple of drivers to use the new helper functions"
* tag 'pmdomain-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (22 commits)
pmdomain: renesas: rcar-gen4-sysc: Reduce atomic delays
pmdomain: renesas: Adjust the waiting time to cover the worst case
pmdomain: qcom: rpmpd: Add MSM8974PRO+PMA8084 power domains
pmdomain: qcom: rpmpd: Add MSM8974+PM8841 power domains
pmdomain: core: constify of_phandle_args in add device and subdomain
pmdomain: core: constify of_phandle_args in xlate
media: venus: Convert to dev_pm_domain_attach|detach_list() for vcodec
remoteproc: qcom_q6v5_adsp: Convert to dev_pm_domain_attach|detach_list()
remoteproc: imx_rproc: Convert to dev_pm_domain_attach|detach_list()
remoteproc: imx_dsp_rproc: Convert to dev_pm_domain_attach|detach_list()
PM: domains: Add helper functions to attach/detach multiple PM domains
pmdomain: imx8mp-blk-ctrl: imx8mp_blk: Add fdcc clock to hdmimix domain
pmdomain: mediatek: Use devm_platform_ioremap_resource() in init_scp()
pmdomain: renesas: r8a779h0-sysc: Add r8a779h0 support
pmdomain: imx8mp-blk-ctrl: Error out if domains are missing in DT
pmdomain: ti: Add a null pointer check to the omap_prm_domain_init
pmdomain: renesas: rcar-gen4-sysc: Remove unneeded includes
pmdomain: core: Print a message when unused power domains are disabled
pmdomain: qcom: rpmpd: Keep one RPM handle for all RPMPDs
pmdomain: core: Scale down parent/child performance states in reverse order
...
This is the usual mix of updates for drivers that are used on (mostly
ARM) SoCs with no other top-level subsystem tree, including:
- The SCMI firmware subsystem gains support for version 3.2 of the
specification and updates to the notification code.
- Feature updates for Tegra and Qualcomm platforms for added
hardware support.
- A number of platforms get soc_device additions for identifying newly
added chips from Renesas, Qualcomm, Mediatek and Google.
- Trivial improvements for firmware and memory drivers amongst
others, in particular 'const' annotations throughout multiple
subsystems.
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Merge tag 'soc-drivers-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Arnd Bergmann:
"This is the usual mix of updates for drivers that are used on (mostly
ARM) SoCs with no other top-level subsystem tree, including:
- The SCMI firmware subsystem gains support for version 3.2 of the
specification and updates to the notification code
- Feature updates for Tegra and Qualcomm platforms for added hardware
support
- A number of platforms get soc_device additions for identifying
newly added chips from Renesas, Qualcomm, Mediatek and Google
- Trivial improvements for firmware and memory drivers amongst
others, in particular 'const' annotations throughout multiple
subsystems"
* tag 'soc-drivers-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (96 commits)
tee: make tee_bus_type const
soc: qcom: aoss: add missing kerneldoc for qmp members
soc: qcom: geni-se: drop unused kerneldoc struct geni_wrapper param
soc: qcom: spm: fix building with CONFIG_REGULATOR=n
bus: ti-sysc: constify the struct device_type usage
memory: stm32-fmc2-ebi: keep power domain on
memory: stm32-fmc2-ebi: add MP25 RIF support
memory: stm32-fmc2-ebi: add MP25 support
memory: stm32-fmc2-ebi: check regmap_read return value
dt-bindings: memory-controller: st,stm32: add MP25 support
dt-bindings: bus: imx-weim: convert to YAML
watchdog: s3c2410_wdt: use exynos_get_pmu_regmap_by_phandle() for PMU regs
soc: samsung: exynos-pmu: Add regmap support for SoCs that protect PMU regs
MAINTAINERS: Update SCMI entry with HWMON driver
MAINTAINERS: samsung: gs101: match patches touching Google Tensor SoC
memory: tegra: Fix indentation
memory: tegra: Add BPMP and ICC info for DLA clients
memory: tegra: Correct DLA client names
dt-bindings: memory: renesas,rpc-if: Document R-Car V4M support
firmware: arm_scmi: Update the supported clock protocol version
...
Merge the pmdomain fixes for v6.8-rc[n] into the next branch, to allow them
to get tested together with the new changes that are targeted for v6.9.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit 'e3e56c050ab6 ("soc: qcom: rpmhpd: Make power_on actually enable
the domain")' aimed to make sure that a power-domain that is being
enabled without any particular performance-state requested will at least
turn the rail on, to avoid filling DeviceTree with otherwise unnecessary
required-opps properties.
But in the event that aggregation happens on a disabled power-domain, with
an enabled peer without performance-state, both the local and peer
corner are 0. The peer's enabled_corner is not considered, with the
result that the underlying (shared) resource is disabled.
One case where this can be observed is when the display stack keeps mmcx
enabled (but without a particular performance-state vote) in order to
access registers and sync_state happens in the rpmhpd driver. As mmcx_ao
is flushed the state of the peer (mmcx) is not considered and mmcx_ao
ends up turning off "mmcx.lvl" underneath mmcx. This has been observed
several times, but has been painted over in DeviceTree by adding an
explicit vote for the lowest non-disabled performance-state.
Fixes: e3e56c050a ("soc: qcom: rpmhpd: Make power_on actually enable the domain")
Reported-by: Johan Hovold <johan@kernel.org>
Closes: https://lore.kernel.org/linux-arm-msm/ZdMwZa98L23mu3u6@hovoldconsulting.com/
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240226-rpmhpd-enable-corner-fix-v1-1-68c004cec48c@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add the power domains CX & GFX found on MSM8974 devices that use PMA8084
instead of the standard PM8841+PM8941 combo.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240210-msm8974-rpmpd-v2-3-595e2ff80ea1@z3ntu.xyz
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add the power domains CX & GFX found on devices with MSM8974 and PM8841.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240210-msm8974-rpmpd-v2-2-595e2ff80ea1@z3ntu.xyz
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
For no apparent reason (as there's just one RPM per SoC), all RPMPDs
currently store a copy of a pointer to smd_rpm. Introduce a single,
global one to save up on space in each definition.
bloat-o-meter reports:
Total: Before=92010, After=91062, chg -1.03%
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231227-topic-rpmpd_cleanup-v1-1-860ab141b076@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
On SA8295P and SA8540P gfx.lvl is not provdied by rpmh, but rather is
handled by an external regulator (max20411). Drop gfx.lvl from the list
of power-domains exposed on this platform.
Fixes: f68f1cb343 ("soc: qcom: rpmhpd: add sc8280xp & sa8540p rpmh power-domains")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240125-sa8295p-gpu-v4-4-7011c2a63037@quicinc.com
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
- Move the generic PM domain and its governor to the pmdomain subsystem
- Drop the unused pm_genpd_opp_to_performance_state()
Providers:
- Convert some providers to let the ->remove() callback return void
- amlogic: Add support for G12A ISP power domain
- arm: Move the SCPI power-domain driver to the pmdomain subsystem
- arm: Move Kconfig options to the pmdomain subsystem
- qcom: Update part number to X1E80100 for the rpmhpd
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Merge tag 'pmdomain-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain updates from Ulf Hansson:
"Core:
- Move the generic PM domain and its governor to the pmdomain
subsystem
- Drop the unused pm_genpd_opp_to_performance_state()
Providers:
- Convert some providers to let the ->remove() callback return void
- amlogic: Add support for G12A ISP power domain
- arm: Move the SCPI power-domain driver to the pmdomain subsystem
- arm: Move Kconfig options to the pmdomain subsystem
- qcom: Update part number to X1E80100 for the rpmhpd"
* tag 'pmdomain-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
PM: domains: Move genpd and its governor to the pmdomain subsystem
PM: domains: Drop redundant header for genpd
PM: domains: Drop the unused pm_genpd_opp_to_performance_state()
PM: domains: fix domain_governor kernel-doc warnings
pmdomain: xilinx/zynqmp: Convert to platform remove callback returning void
pmdomain: qcom-cpr: Convert to platform remove callback returning void
pmdomain: imx93-pd: Convert to platform remove callback returning void
pmdomain: imx93-blk-ctrl: Convert to platform remove callback returning void
pmdomain: imx8mp-blk-ctrl: Convert to platform remove callback returning void
pmdomain: imx8m-blk-ctrl: Convert to platform remove callback returning void
pmdomain: imx-gpcv2: Convert to platform remove callback returning void
pmdomain: imx-gpc: Convert to platform remove callback returning void
pmdomain: imx-pgc: Convert to platform remove callback returning void
pmdomain: amlogic: meson-ee-pwrc: add support for G12A ISP power domain
dt-bindings: power: meson-g12a-power: document ISP power domain
firmware: arm_scpi: Move power-domain driver to the pmdomain dir
pmdomain: arm_scmi: Move Kconfig options to the pmdomain subsystem
pmdomain: qcom: rpmhpd: Update part number to X1E80100
dt-bindings: power: rpmpd: Update part number to X1E80100
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231124080623.564924-9-u.kleine-koenig@pengutronix.de
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
There was a recent part number update from SC8380XP to X1E80100 and as
a result of which SC8380xp prefix introduced in the rpmhpd driver is no
longer correct. Update it to X1E80100, to reflect the bindings change.
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231123100021.10918-3-quic_sibis@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Set GENPD_FLAG_ACTIVE_WAKEUP for all RPM power domains so that power
domains necessary for wakeup/"awake path" devices are kept on across
suspend.
This is needed for example for the *_AO ("active-only") variants of the
RPMPDs used by the CPU. Those should maintain their votes also across
system suspend to ensure the CPU can keep running for the whole suspend
process (ending in a firmware call). When the RPM firmware detects that
the CPUs are in a deep idle state it will drop those votes automatically.
Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Add the power domains exposed by RPMH in the Qualcomm SC8380XP platform.
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Rajendra Nayak <quic_rjendra@quicinc.com>
Co-developed-by: Sibi Sankar <quic_sibis@quicinc.com>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231025135943.13854-4-quic_sibis@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
QM215 is typically paired with a PM8916 PMIC and uses its SMPA1 and
LDOA2 regulators in voltage level mode for VDDCX and VDDMX, respectively.
Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231014133823.14088-4-otto.pflueger@abscue.de
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
MSM8917 uses the SMPA2 and LDOA3 regulators provided by the PM8937 PMIC
for the VDDCX and VDDMX power domains in voltage level mode,
respectively. These definitions should also work on MSM8937.
Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231014133823.14088-3-otto.pflueger@abscue.de
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Since commit 7c41cdcd3b ("OPP: Simplify the over-designed pstate <->
level dance"), there is no longer any need for genpd providers to assign
the ->opp_to_performance_state(), hence let's drop it.
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231012153607.101465-1-ulf.hansson@linaro.org
Since commit 7c41cdcd3b ("OPP: Simplify the over-designed pstate <->
level dance"), there is no longer any need for genpd providers to assign
the ->opp_to_performance_state(), hence let's drop it.
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231012153558.101445-1-ulf.hansson@linaro.org
Since commit 7c41cdcd3b ("OPP: Simplify the over-designed pstate <->
level dance"), there is no longer any need for genpd providers to assign
the ->opp_to_performance_state(), hence let's drop it.
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231012153550.101425-1-ulf.hansson@linaro.org
The Kconfig options belongs closer to the corresponding implementations,
hence let's move them from the soc subsystem to the pmdomain subsystem.
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: Andy Gross <agross@kernel.org>
Cc: <linux-arm-msm@vger.kernel.org>
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
It has been pointed out that naming a subsystem "genpd" isn't very
self-explanatory and the acronym itself that means Generic PM Domain, is
known only by a limited group of people.
In a way to improve the situation, let's rename the subsystem to pmdomain,
which ideally should indicate that this is about so called Power Domains or
"PM domains" as we often also use within the Linux Kernel terminology.
Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230912221127.487327-1-ulf.hansson@linaro.org
