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The use of R7 in the SMCCC conflicts with the compiler's use of R7 as a frame
pointer in Thumb2 mode, which is forcibly enabled by Clang when profiling
hooks are inserted via the -pg switch.
This is a known issue and similar driver workaround this with a Makefile
ifdef. Exact workaround are applied in
drivers/firmware/arm_scmi/transports/Makefile and other similar driver.
Suggested-by: Sudeep Holla <sudeep.holla@arm.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202501201840.XmpHXpQ4-lkp@intel.com/
Fixes: 82e703dd438b ("pmdomain: airoha: Add Airoha CPU PM Domain support")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20250120153817.11807-1-ansuelsmth@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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On a system with multiple active SCMI agents, one agent(other than OSPM/
Linux or bootloader) would request to turn on a shared power domain
before the Linux boots/initialise the genpds. So when the Linux boots
and gets the power state as already ON, it just registers the genpd with
a default ON state.
However, when the driver that needs this shared power domain is probed
genpd sees that the power domain status is ON and never makes any SCMI
call to power it up which is correct. But, since Linux didn't make an
explicit request to turn on the shared power domain, the SCMI platform
firmware will not know if the OSPM agent is actively using it.
Suppose the other agent that requested the shared power domain to be
powered ON requests to power it OFF as it no longer needs it, the SCMI
platform firmware needs to turn it off if there are no active users of
it which in the above scenaro is the case.
As a result of SCMI platform firmware turning off the resource, OSPM/
Linux will crash the moment as it expects the shared power domain to be
powered ON.
Send an explicit request to set the current state when setting up the
genpd power domains so that OSPM registers its vote in the power domain
state with the SCMI platform firmware.
The other option is to not read the state and set the genpds as default
OFF, but it can't handle the scenario on certain platforms where SCMI
platform keeps all the power domains turned ON by default for faster boot
(or any other such variations) and expect the OSPM to turn off the unused
domains if power saving is required.
Link: https://lore.kernel.org/all/Z4aBkezSWOPCXcUh@bogus
Reported-by: Ranjani Vaidyanathan <ranjani.vaidyanathan@nxp.com>
Reported-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20250115113931.1181309-1-sudeep.holla@arm.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Merge the pmdomain fixes for v6.13-rc[n] into the next branch, to allow them
to get tested together with the new changes that are targeted for v6.14.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Currently imx8mp_blk_ctrl_remove() will continue the for loop
until an out-of-bounds exception occurs.
pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dev_pm_domain_detach+0x8/0x48
lr : imx8mp_blk_ctrl_shutdown+0x58/0x90
sp : ffffffc084f8bbf0
x29: ffffffc084f8bbf0 x28: ffffff80daf32ac0 x27: 0000000000000000
x26: ffffffc081658d78 x25: 0000000000000001 x24: ffffffc08201b028
x23: ffffff80d0db9490 x22: ffffffc082340a78 x21: 00000000000005b0
x20: ffffff80d19bc180 x19: 000000000000000a x18: ffffffffffffffff
x17: ffffffc080a39e08 x16: ffffffc080a39c98 x15: 4f435f464f006c72
x14: 0000000000000004 x13: ffffff80d0172110 x12: 0000000000000000
x11: ffffff80d0537740 x10: ffffff80d05376c0 x9 : ffffffc0808ed2d8
x8 : ffffffc084f8bab0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffffff80d19b9420 x4 : fffffffe03466e60 x3 : 0000000080800077
x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
dev_pm_domain_detach+0x8/0x48
platform_shutdown+0x2c/0x48
device_shutdown+0x158/0x268
kernel_restart_prepare+0x40/0x58
kernel_kexec+0x58/0xe8
__do_sys_reboot+0x198/0x258
__arm64_sys_reboot+0x2c/0x40
invoke_syscall+0x5c/0x138
el0_svc_common.constprop.0+0x48/0xf0
do_el0_svc+0x24/0x38
el0_svc+0x38/0xc8
el0t_64_sync_handler+0x120/0x130
el0t_64_sync+0x190/0x198
Code: 8128c2d0 ffffffc0 aa1e03e9 d503201f
Fixes: 556f5cf9568a ("soc: imx: add i.MX8MP HSIO blk-ctrl")
Cc: stable@vger.kernel.org
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250115014118.4086729-1-xiaolei.wang@windriver.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add Airoha CPU PM Domain support to control frequency and power of CPU
present on Airoha EN7581 SoC.
Frequency and power can be controlled with the use of the SMC command by
passing the performance state. The driver also expose a read-only clock
that expose the current CPU frequency with SMC command.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20250109131313.32317-1-ansuelsmth@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Merge the pmdomain fixes for v6.13-rc[n] into the next branch, to allow them
to get tested together with the new changes that are targeted for v6.14.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The genpd device, which is really only used as a handle to lookup
OPP, but not even registered to the device core otherwise and thus
lifetime linked to the genpd struct it is contained in, is missing
a release function. After b8f7bbd1f4ec ("pmdomain: core: Add
missing put_device()") the device will be cleaned up going through
the driver core device_release() function, which will warn when no
release callback is present for the device. Add a dummy release
function to shut up the warning.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Fixes: b8f7bbd1f4ec ("pmdomain: core: Add missing put_device()")
Cc: stable@vger.kernel.org
Message-ID: <20241218184433.1930532-1-l.stach@pengutronix.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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imx_gpcv2_probe() leaks an OF node reference obtained by
of_get_child_by_name(). Fix it by declaring the device node with the
__free(device_node) cleanup construct.
This bug was found by an experimental static analysis tool that I am
developing.
Fixes: 03aa12629fc4 ("soc: imx: Add GPCv2 power gating driver")
Signed-off-by: Joe Hattori <joe@pf.is.s.u-tokyo.ac.jp>
Cc: stable@vger.kernel.org
Message-ID: <20241215030159.1526624-1-joe@pf.is.s.u-tokyo.ac.jp>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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When a device supports IO daisy-chain wakeups, it uses a dedicated
wake IRQ. Devices with IO daisy-chain wakeups enabled should not set
wakeup constraints since these can happen even from deep power states,
so should not prevent the DM from picking deep power states.
Wake IRQs are set with dev_pm_set_wake_irq() or
dev_pm_set_dedicated_wake_irq(). The latter is used by the serial
driver used on K3 platforms (drivers/tty/serial/8250/8250_omap.c)
when the interrupts-extended property is used to describe the
dedicated wakeup interrupt.
Detect these wake IRQs in the suspend path, and if set, skip sending
constraint.
Tested-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Message-ID: <20241206-lpm-v6-10-constraints-pmdomain-v6-3-833980158c68@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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During system-wide suspend, check all devices connected to PM domain
to see if they are wakeup-enabled. If so, set a TI SCI device
constraint.
Note: DM firmware clears all constraints on resume.
Co-developed-by: Vibhore Vardhan <vibhore@ti.com>
Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Message-ID: <20241206-lpm-v6-10-constraints-pmdomain-v6-2-833980158c68@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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For each device in a TI SCI PM domain, check whether the device has
any resume latency constraints set via per-device PM QoS. If
constraints are set, send them to DM via the new SCI constraints API.
Checking for constraints happen for each device before system-wide
suspend (via ->suspend() hook.)
An important detail here is that the PM domain driver inserts itself
into the path of both the ->suspend() and ->resume() hook path
of *all* devices in the PM domain. This allows generic PM domain code
to handle the constraint management and communication with TI SCI.
Further, this allows device drivers to use existing PM QoS APIs to
add/update constraints.
DM firmware clears constraints during its resume, so Linux has
to check/update/send constraints each time system suspends.
Also note that the PM QoS framework uses usecs as the units for
latency whereas the TI SCI firmware uses msecs, so a conversion is
needed before passing to TI SCI.
Co-developed-by: Vibhore Vardhan <vibhore@ti.com>
Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Message-ID: <20241206-lpm-v6-10-constraints-pmdomain-v6-1-833980158c68@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The gpcv2 drivers on imx8m series are registered as platform
devices and this opens the possibility of reloading the driver
at runtime.
But this doesn't actually work. There are some hardware sequence
dependecy between blk ctrl and gpc, also power domains are used
by other peripherals, so fix this by explicitly suppressing bind
attrs.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-ID: <20241206112731.98244-2-peng.fan@oss.nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The blk ctrl drivers on imx8m series are registered as platform
devices and this opens the possibility of reloading the driver
at runtime.
But this doesn't actually work. There are some hardware sequence
dependecy between blk ctrl and gpc, also power domains are used
by other peripherals, so fix this by explicitly suppressing bind
attrs.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-ID: <20241206112731.98244-1-peng.fan@oss.nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Commit 422f2d418186 ("arm64: dts: qcom: Drop undocumented domain
"idle-state-name"") brought to light the common misbelief that
idle-state-names also applies to e.g. PSCI power domain idle states.
Make that a reality, mimicking the property name used by cpuidle
states.
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Message-ID: <20241130-topic-idle_state_name-v1-2-d0ff67b0c8e9@oss.qualcomm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain fixes from Ulf Hansson:
"Core:
- Fix a couple of memory-leaks during genpd init/remove
Providers:
- imx: Adjust delay for gpcv2 to fix power up handshake
- mediatek: Fix DT bindings by adding another nested power-domain
layer"
* tag 'pmdomain-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
pmdomain: imx: gpcv2: Adjust delay after power up handshake
pmdomain: core: Fix error path in pm_genpd_init() when ida alloc fails
pmdomain: core: Add missing put_device()
dt-bindings: power: mediatek: Add another nested power-domain layer
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The udelay(5) is not enough, sometimes below kernel panic
still be triggered:
[ 4.012973] Kernel panic - not syncing: Asynchronous SError Interrupt
[ 4.012976] CPU: 2 UID: 0 PID: 186 Comm: (udev-worker) Not tainted 6.12.0-rc2-0.0.0-devel-00004-g8b1b79e88956 #1
[ 4.012982] Hardware name: Toradex Verdin iMX8M Plus WB on Dahlia Board (DT)
[ 4.012985] Call trace:
[...]
[ 4.013029] arm64_serror_panic+0x64/0x70
[ 4.013034] do_serror+0x3c/0x70
[ 4.013039] el1h_64_error_handler+0x30/0x54
[ 4.013046] el1h_64_error+0x64/0x68
[ 4.013050] clk_imx8mp_audiomix_runtime_resume+0x38/0x48
[ 4.013059] __genpd_runtime_resume+0x30/0x80
[ 4.013066] genpd_runtime_resume+0x114/0x29c
[ 4.013073] __rpm_callback+0x48/0x1e0
[ 4.013079] rpm_callback+0x68/0x80
[ 4.013084] rpm_resume+0x3bc/0x6a0
[ 4.013089] __pm_runtime_resume+0x50/0x9c
[ 4.013095] pm_runtime_get_suppliers+0x60/0x8c
[ 4.013101] __driver_probe_device+0x4c/0x14c
[ 4.013108] driver_probe_device+0x3c/0x120
[ 4.013114] __driver_attach+0xc4/0x200
[ 4.013119] bus_for_each_dev+0x7c/0xe0
[ 4.013125] driver_attach+0x24/0x30
[ 4.013130] bus_add_driver+0x110/0x240
[ 4.013135] driver_register+0x68/0x124
[ 4.013142] __platform_driver_register+0x24/0x30
[ 4.013149] sdma_driver_init+0x20/0x1000 [imx_sdma]
[ 4.013163] do_one_initcall+0x60/0x1e0
[ 4.013168] do_init_module+0x5c/0x21c
[ 4.013175] load_module+0x1a98/0x205c
[ 4.013181] init_module_from_file+0x88/0xd4
[ 4.013187] __arm64_sys_finit_module+0x258/0x350
[ 4.013194] invoke_syscall.constprop.0+0x50/0xe0
[ 4.013202] do_el0_svc+0xa8/0xe0
[ 4.013208] el0_svc+0x3c/0x140
[ 4.013215] el0t_64_sync_handler+0x120/0x12c
[ 4.013222] el0t_64_sync+0x190/0x194
[ 4.013228] SMP: stopping secondary CPUs
The correct way is to wait handshake, but it needs BUS clock of
BLK-CTL be enabled, which is in separate driver. So delay is the
only option here. The udelay(10) is a data got by experiment.
Fixes: e8dc41afca16 ("pmdomain: imx: gpcv2: Add delay after power up handshake")
Reported-by: Francesco Dolcini <francesco@dolcini.it>
Closes: https://lore.kernel.org/lkml/20241007132555.GA53279@francesco-nb/
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Cc: stable@vger.kernel.org
Message-ID: <20241121075231.3910922-1-shengjiu.wang@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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When the ida allocation fails we need to free up the previously allocated
memory before returning the error code. Let's fix this and while at it,
let's also move the ida allocation to genpd_alloc_data() and the freeing to
genpd_free_data(), as it better belongs there.
Fixes: 899f44531fe6 ("pmdomain: core: Add GENPD_FLAG_DEV_NAME_FW flag")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Message-ID: <20241122134207.157283-3-ulf.hansson@linaro.org>
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When removing a genpd we don't clean up the genpd->dev correctly. Let's add
the missing put_device() in genpd_free_data() to fix this.
Fixes: 401ea1572de9 ("PM / Domain: Add struct device to genpd")
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Message-ID: <20241122134207.157283-2-ulf.hansson@linaro.org>
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The continual trickle of small conversion patches is grating on me, and
is really not helping. Just get rid of the 'remove_new' member
function, which is just an alias for the plain 'remove', and had a
comment to that effect:
/*
* .remove_new() is a relic from a prototype conversion of .remove().
* New drivers are supposed to implement .remove(). Once all drivers are
* converted to not use .remove_new any more, it will be dropped.
*/
This was just a tree-wide 'sed' script that replaced '.remove_new' with
'.remove', with some care taken to turn a subsequent tab into two tabs
to make things line up.
I did do some minimal manual whitespace adjustment for places that used
spaces to line things up.
Then I just removed the old (sic) .remove_new member function, and this
is the end result. No more unnecessary conversion noise.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This adds the RPMHPD present in SM8750 SoCs.
Signed-off-by: Jishnu Prakash <quic_jprakash@quicinc.com>
Signed-off-by: Taniya Das <quic_tdas@quicinc.com>
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
Message-ID: <20241112002444.2802092-3-quic_molvera@quicinc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The use of of_property_read_bool() for non-boolean properties is
deprecated in favor of of_property_present() when testing for property
presence.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Message-ID: <20241104190742.276710-1-robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Merge the pmdomain fixes for v6.12-rc[n] into the next branch, to allow them
to get tested together with the new changes that are targeted for v6.13.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The check condition should be 'i < bc->onecell_data.num_domains', not
'bc->onecell_data.num_domains' which will make the look never finish
and cause kernel panic.
Also disable runtime to address
"imx93-blk-ctrl 4ac10000.system-controller: Unbalanced pm_runtime_enable!"
Fixes: e9aa77d413c9 ("soc: imx: add i.MX93 media blk ctrl driver")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Cc: stable@vger.kernel.org
Message-ID: <20241101101252.1448466-1-peng.fan@oss.nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The patch standardizes the probe() code by replacing the two occurrences
of dev_err() with dev_err_probe(). Indeed, dev_err_probe() was used in all
other error paths of the probe() function.
Note that dev_err_probe() has advantages even if the error code is not
EPROBE_DEFER, such as the symbolic output of the error code. Therefore,
it should generally be preferred over dev_err().
Co-developed-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Message-ID: <20241025160430.4113467-1-dario.binacchi@amarulasolutions.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Use scope based of_node_put() to simplify the code logic, and we don't
need to call of_node_put(). Besides, put of_parse_phandle_with_args() in
the while loop to make code more simple.
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Message-ID: <20241024030442.119506-3-zhangzekun11@huawei.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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of_parse_phandle_with_args() needs to call of_node_put() to decrement
the refcount of args.np. So, Add the missing of_node_put() in the loop.
Fixes: efa5c01cd7ee ("soc: ti: ti_sci_pm_domains: switch to use multiple genpds instead of one")
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Message-ID: <20241024030442.119506-2-zhangzekun11@huawei.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Merge the pmdomain fixes for v6.12-rc[n] into the next branch, to allow them
to get tested together with the new changes that are targeted for v6.13.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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With this flag, if a device is marked on the wakeup path, the corresponding
PM domain is kept powered on.
This commit fixes the no_console_suspend support for some TI platforms
(tested on J7200). In case of no_console_suspend the serial core marks the
device on the wakeup path, but without this patch the power domain is
powered off anyway.
Suggested-by: Théo Lebrun <theo.lebrun@bootlin.com>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20241022-8250-omap-no-console-suspend-v2-1-cc3d102b8a1e@bootlin.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The domain attributes returned by the perf protocol can end up reporting
identical names across domains, resulting in debugfs node creation failure.
Use the GENPD_FLAG_DEV_NAME_FW to ensure the genpd providers end up with an
unique name.
Logs: [X1E reports 'NCC' for all its scmi perf domains]
debugfs: Directory 'NCC' with parent 'pm_genpd' already present!
debugfs: Directory 'NCC' with parent 'pm_genpd' already present!
Reported-by: Johan Hovold <johan+linaro@kernel.org>
Closes: https://lore.kernel.org/lkml/ZoQjAWse2YxwyRJv@hovoldconsulting.com/
Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Cc: stable@vger.kernel.org
Message-ID: <20241030125512.2884761-6-quic_sibis@quicinc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Introduce GENPD_FLAG_DEV_NAME_FW flag which instructs genpd to generate
an unique device name using ida. It is aimed to be used by genpd providers
which derive their names directly from FW making them susceptible to
debugfs node creation failures.
Reported-by: Johan Hovold <johan+linaro@kernel.org>
Closes: https://lore.kernel.org/lkml/ZoQjAWse2YxwyRJv@hovoldconsulting.com/
Fixes: 718072ceb211 ("PM: domains: create debugfs nodes when adding power domains")
Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Cc: stable@vger.kernel.org
Message-ID: <20241030125512.2884761-5-quic_sibis@quicinc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add support for SCPSYS power domains of MT6735. All non-CPU power domains
are added except for MD2 (C2K modem), which is left out due to issues
with powering it on.
Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20241017085136.68053-3-y.oudjana@protonmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Define power domains as supported by the RPMh on the SAR2130P platform.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20241017-sar2130p-rpmhpd-v1-2-f4bf7f6fd12e@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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In the single PM domain case there is no need for platform code to specify
the index of the corresponding required OPP in DT, as the index must be
zero. This allows us to assign a required dev for the required OPP from
genpd, while attaching a device to its PM domain.
In this way, we can remove some of the genpd specific code in the OPP core
for the single PM domain case. Although, this cleanup is made from a
subsequent change.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-7-ulf.hansson@linaro.org
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To improve the readability of the code in __genpd_dev_pm_attach(), let's
move out the required OPP handling into a separate function.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-6-ulf.hansson@linaro.org
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Merge the pmdomain fixes for v6.12-rc[n] into the next branch, to allow them
to get tested together with the new changes that are targeted for v6.13.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add support for power domains exposed by RPMh on the qcs615 platform.
Only CX/CX_AO are exposed by RPMh. Consumers such as VDD_MX, EBI, LPI_
MX and LPI_CX will share the power domains.
Signed-off-by: Tingguo Cheng <quic_tingguoc@quicinc.com>
Link: https://lore.kernel.org/r/20240927-add_qcs615_qcs8300_powerdomains_driver_support-v2-4-18c030ad7b68@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add support for the power domains exposed by RPMh on the qcs8300
platform. MMCX depends on CX, so mark CX as the parent of MMCX.
Co-developed-by: Shazad Hussain <quic_shazhuss@quicinc.com>
Signed-off-by: Shazad Hussain <quic_shazhuss@quicinc.com>
Signed-off-by: Tingguo Cheng <quic_tingguoc@quicinc.com>
Link: https://lore.kernel.org/r/20240927-add_qcs615_qcs8300_powerdomains_driver_support-v2-2-18c030ad7b68@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The of_property_read_u64() can fail and remain the variable uninitialized,
which will then be returned. Initializing the variable "rate" to zero to
fix this problem.
Fixes: 181c8148556a ("pmdomain: qcom-cpr: Use scope based of_node_put() to simplify code.")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-pm/455a6a49-41d2-4a20-9a31-f57ee7a67920@huawei.com/T/#m0a62b501b453a6d6e94c52a428a66f65b5422c65
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240926134211.45394-1-zhangzekun11@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The MediaTek power domain driver contains a hack that assigns the device
node of the power domain to the struct device of the power domain
controller in order to use the devres regulator API.
Now that there is a proper OF-specific regulator API, and even a devres
version, replace the hack with proper code.
This change is incompatible with incomplete device trees. Instead of
assigning the dummy regulator in cases where the power domain requires
a supply but the device tree does not provide one, the driver will just
error out. This will be seen on the MT8390 EVK, which is missing
supplies for the IMG_VCORE and CAM_VCORE domains. And likely all the
MediaTek EVBs, which have no power domain supplies specified. This is
however the correct behavior. If the power domain's supply is missing,
then it should not work. Relying on other parts of the system to keep
the unattached regulator enabled is likely to break in ways less easier
to understand.
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20240930044525.2043884-4-wenst@chromium.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Commit 9094e53ff5c86ebe ("pmdomain: core: Use dev_name() instead of
kobject_get_path() in debugfs") severely shortened the names of devices
in a PM Domain. Now the most common format[1] consists of a 32-bit
unit-address (8 characters), followed by a dot and a node name (20
characters for "air-pollution-sensor" and "interrupt-controller", which
are the longest generic node names documented in the Devicetree
Specification), for a typical maximum of 29 characters.
This offers a good opportunity to reduce the table width of the debug
summary:
- Reduce the device name field width from 50 to 30 characters, which
matches the PM Domain name width,
- Reduce the large inter-column space between the "performance" and
"managed by" columns.
Visual impact:
- The "performance" column now starts at a position that is a
multiple of 16, just like the "status" and "children" columns,
- All of the "/device", "runtime status", and "managed by" columns are
now indented 4 characters more than the columns right above them,
- Everything fits in (one less than) 80 characters again ;-)
[1] Note that some device names (e.g. TI AM335x interconnect target
modules) do not follow this convention, and may be much longer, but
these didn't fit in the old 50-character column width either.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/f8e1821364b6d5d11350447c128f6d2b470f33fe.1725459707.git.geert+renesas@glider.be
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Move mode_status_str() below perf_status_str(), to make declaration
order match calling order of the various *_status_str() helpers.
While at it, add a blank line for consistency among the three helpers.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/18ed6fb2bb92860f3af1bc7e5e4a01e9dacf2126.1725459707.git.geert+renesas@glider.be
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The "performance" column contains variable-width values. Hence when
their printed values contain more than one digit, all values in
successive columns become misaligned.
Fix this by formatting it as a fixed-width field. Adjust successive
spaces and field widths to retain the exiting layout.
Fixes: 0155aaf95a2a ("PM: domains: Add the domain HW-managed mode to the summary")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/e004f9d2a75e9a49c269507bb8a4514001751e85.1725459707.git.geert+renesas@glider.be
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The inter-column space in the debug summary is two spaces. However, in
one case, the extra space is handled implicitly in a field width
specifier. Make inter-column space explicit to ease future maintenance.
Fixes: 45fbc464b047 ("PM: domains: Add "performance" column to debug summary")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/ae61eb363621b981edde878e1e74d701702a579f.1725459707.git.geert+renesas@glider.be
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The RK3576 SoC needs to ungate the power domains before their status can
be modified.
The values have been taken from the rockchip downstream driver.
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Link: https://lore.kernel.org/r/20240829202732.75961-3-detlev.casanova@collabora.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Some rockchip SoC need to ungate power domains before their power status
can be changed.
Each power domain has a gate mask that is set to 1 to ungate it when
manipulating power status, then set back to 0 to gate it again.
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Link: https://lore.kernel.org/r/20240829202732.75961-2-detlev.casanova@collabora.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Drop OF node reference immediately after using it in
syscon_node_to_regmap(), which is both simpler and typical/expected
code pattern.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20240825183116.102953-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Using dev_err_cast_probe() to simplify the code.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/20240828121230.3696315-1-lihongbo22@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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This variable is only used within the probe() function, so let's remove
it from the context and define it locally within the same function.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Link: https://lore.kernel.org/r/20240825143428.556439-3-dario.binacchi@amarulasolutions.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The removed code was added to handle the case where the power domain is
already on during the driver's probing. In this use case, the "is_off"
parameter is passed as false to pm_genpd_init() to inform it not to call
the power_on() callback, as it's unnecessary to perform the hardware
power-on procedure since the power domain is already on. Therefore, with
the call to clk_bulk_prepare_enable() by probe(), the system is in the
same operational state as when "is_off" is passed as true after the
power_on() callback execution:
probe() -> is_off == true -> clk_bulk_prepare_enable() called by power_on()
probe() -> is_off == false -> clk_bulk_prepare_enable() called by probe()
Reaching the same logical and operational state, it follows that upon
driver removal, there is no need to perform different actions depending
on the power domain's on/off state during probing.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Link: https://lore.kernel.org/r/20240825143428.556439-2-dario.binacchi@amarulasolutions.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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This way, the code becomes more compact, and dev_err_probe() is used in
every error path of the probe() function.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240825143428.556439-1-dario.binacchi@amarulasolutions.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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