Use non-fast wakeup stop mode for system suspend support, so
the SOC can enter DSM mode by default.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: I37828d4e66ee2ebd48e7adca054b93c520cb2c82
Add the anamix PLL override setting for DSM mode support,
so that the PLL can be power down in DSM mode to save power.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: Ibe954bc7c4a7b453ace13f8e4b6a335e6d4856c3
This new workaround takes advantage of the per core IMR
registers in GPC in order to unmask the IRQ0, still generated
by the 12bit in IOMUX_GPR register (which now remains always set),
so it can only wake up one core at the time.Also, this entire
workaround has now been moved here in TF-A, allowing the kernel
side to be minimal.
Another advantage this workaround brings is the removal of the
50us delay (which was necessary before in gic_raise_softirq in
kernel) by allowing the core that is waking up to mask his own
IRQ0 in the suspend finish callback.
One important change here is the way the cores are woken up in
dram_dvfs_handler. Since the wake up mechanism has changed from
asserting the 12th bit in IOMUX_GPR and leaving the IMR1 1st bit
on for each core to exactly the reverse, that is, leaving the
IOMUX_GPR 12th bit always set and then masking/unmasking the IMR1
1st bit for each independent core, we need to use the imx_gpc_core_wake
to wake up the cores.
Also, the 50us udelay is moved to TF-A (inside imx_pwr_domain_off)
from kernel(gic_raise_softirq), since the new cpuidle workaround
does not need it in order to clean the IOMUX_GPC 12bit. For now,
the udelay seems to be still needed in order to delay the affinity
info OFF for the dying core. This is something that needs further
investigation.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: I9f17ff6fc3452b8225a50b232964712aafeab78a
Add PLL power down override & bypass support when
system enter DSM mode.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: I50cd6b82151961ab849f58714a8c307d3f7f4166
CPU hotplug & cpuidle have some race condition when doing CPU hotplug
stress test. different CPU cores have the chance to access the same
GPC register(A53_AD), so lock is necessary to do exlusive access.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: I1296592e05fa78429c3f0fac066951521db755e3
The number of gpc imr mask reg & the offset is different
on some SOC, so correct it & replace the magic number with
macro define.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: Ic701675cdd92e043dcd7f06722f2e871068aec74
Keep A53 PLAT(SCU) power domain on in wait mode(ret).
RBC count only need to be set in PLAT OFF mode, so
change it accordingly.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: Ie55e25c8210d298506fc4dca7a9653583db45e0c
for the i.MX8M SOCs, part of the code for gpc
and PSCI implementation can be reused and make it
common for all these SoCs. this patch extracts
the common part for reuse.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
