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When system entering DSM mode, the main NOC wrapper only need to
be on if any of the MIX with ADB400 port is on, so update the flow
for this.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Anson Huang <Anson.Huang@nxp.com>
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On i.MX8MP, the SRC GPR9(0x94) is used by memory repair, so choose
SRC GPR10(0x98) as the LPA status sync register. Add use '==' instead
of '&' for LPA active statue check.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Anson Huang <Anson.Huang@nxp.com>
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Support stop M7 with SIP call.
Per IC team, to rekick M7 need follow steps.
If M7 already in WFI, perform below steps.
a) Set [0x303A_002C].0=0 [ request SLEEPHOLDREQn ]
b) Wait [0x303A_00EC].1 = 0 [ wait SLEEPHOLDACKn ]
c) Set GPR.CPUWAIT=1
d) Set [0x303A_002C].0=1 [ de-assert SLEEPHOLDREQn ]
e) Set SRC_M7_RCR[3:0] = 0xE0 [ reset M7 core/plat ]
f) Wait SRC_M7_RCR[3:0] = 0x8
g) Init TCM or DDR
h) Set GPR.INITVTOR
i) Set GPR.CPUWAIT=0, M7 starting running
Add a timeout check, if timeout, still perform force reset, in this
way no need to rely on M7 team's image wfi support ready.
Return a1,a2 to caller to check timeout or reset fail.
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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On i.MX8MN & i.MX8MP, the M core enabled check should
relay on the IOMUX GPR CPU_WAIT bit, when this bit is
cleared, it means M core is active & running, so refine
the m4 enabled check method.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
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Replace the imr offset magic number with macro defines.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
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Add the M core low power audio support on i.MX8M.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
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Enable the NOC wrapper power down support for SoC that
have switchable NOC power domain.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
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Add the SRC SiP handler for M4/M7 boot support on i.MX8M SoC.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
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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>
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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>
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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>
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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>
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Add the PU power domain support for imx8mm/mn.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
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Add PLL power down override & bypass support when
system enter DSM mode.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
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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>
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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>
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