linux.git/drivers/soc/ti, branch v5.13

soc: ti: omap-prm: Allow hardware supported retention when idle

2021-03-10T11:59:17+00:00

When moving the l4 interconnect instances to probe with simple-pm-bus and
genpd, we will have l4per and core domains stop idling unless we configure
the domain bits to allow retention when idle.

As the TI SoCs have hardware autoidle capabilities, this is safe to do.
The domains will only enter retention on WFI when none of the devices on
the domain block autoidle in the hardware. This follows what we are
already currently doing.

Cc: Santosh Shilimkar 
Cc: Tero Kristo 
Signed-off-by: Tony Lindgren

Merge branch 'fixes-rc2' into fixes

2021-03-08T09:34:12+00:00

Merge tag 'arm-drivers-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2021-02-21T02:42:28+00:00

Pull ARM SoC driver updates from Arnd Bergmann:
 "Updates for SoC specific drivers include a few subsystems that have
  their own maintainers but send them through the soc tree:

  SCMI firmware:
   - add support for a completion interrupt

  Reset controllers:
   - new driver for BCM4908
   - new devm_reset_control_get_optional_exclusive_released() function

  Memory controllers:
   - Renesas RZ/G2 support
   - Tegra124 interconnect support
   - Allow more drivers to be loadable modules

  TEE/optee firmware:
   - minor code cleanup

  The other half of this is SoC specific drivers that do not belong into
  any other subsystem, most of them living in drivers/soc:

   - Allwinner/sunxi power management work
   - Allwinner H616 support

   - ASpeed AST2600 system identification support

   - AT91 SAMA7G5 SoC ID driver
   - AT91 SoC driver cleanups

   - Broadcom BCM4908 power management bus support

   - Marvell mbus cleanups

   - Mediatek MT8167 power domain support

   - Qualcomm socinfo driver support for PMIC
   - Qualcomm SoC identification for many more products

   - TI Keystone driver cleanups for PRUSS and elsewhere"

* tag 'arm-drivers-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (89 commits)
  soc: aspeed: socinfo: Add new systems
  soc: aspeed: snoop: Add clock control logic
  memory: tegra186-emc: Replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE
  memory: samsung: exynos5422-dmc: Correct function names in kerneldoc
  memory: ti-emif-pm: Drop of_match_ptr from of_device_id table
  optee: simplify i2c access
  drivers: soc: atmel: fix type for same7
  tee: optee: remove need_resched() before cond_resched()
  soc: qcom: ocmem: don't return NULL in of_get_ocmem
  optee: sync OP-TEE headers
  tee: optee: fix 'physical' typos
  drivers: optee: use flexible-array member instead of zero-length array
  tee: fix some comment typos in header files
  soc: ti: k3-ringacc: Use of_device_get_match_data()
  soc: ti: pruss: Refactor the CFG sub-module init
  soc: mediatek: pm-domains: Don't print an error if child domain is deferred
  soc: mediatek: pm-domains: Add domain regulator supply
  dt-bindings: power: Add domain regulator supply
  soc: mediatek: cmdq: Remove cmdq_pkt_flush()
  soc: mediatek: pm-domains: Add support for mt8167
  ...

soc: ti: omap-prm: Fix occasional abort on reset deassert for dra7 iva

2021-02-18T12:07:29+00:00

On reset deassert, we must wait a bit after the rstst bit change before
we allow clockdomain autoidle again. Otherwise we get the following oops
sometimes on dra7 with iva:

Unhandled fault: imprecise external abort (0x1406) at 0x00000000
44000000.ocp:L3 Standard Error: MASTER MPU TARGET IVA_CONFIG (Read Link):
At Address: 0x0005A410 : Data Access in User mode during Functional access
Internal error: : 1406 [#1] SMP ARM
...
(sysc_write_sysconfig) from [] (sysc_enable_module+0xcc/0x260)
(sysc_enable_module) from [] (sysc_runtime_resume+0xc8/0x174)
(sysc_runtime_resume) from [] (genpd_runtime_resume+0x94/0x224)
(genpd_runtime_resume) from [] (__rpm_callback+0xd8/0x180)

It is unclear what all devices this might affect, but presumably other
devices with the rstst bit too can be affected. So let's just enable the
delay for all the devices with rstst bit for now. Later on we may want to
limit the list to the know affected devices if needed.

Fixes: d30cd83f6853 ("soc: ti: omap-prm: add support for denying idle for reset clockdomain")
Reported-by: Yongqin Liu 
Signed-off-by: Tony Lindgren

soc: ti: omap-prm: Fix reboot issue with invalid pcie reset map for dra7

2021-02-15T04:40:32+00:00

Yongqin Liu  reported an issue where reboot hangs
on beagleboard-x15. This started happening after commit 7078a5ba7a58
("soc: ti: omap-prm: Fix boot time errors for rst_map_012 bits 0 and 1").

We now assert any 012 type resets on init to prevent unconfigured
accelerator MMUs getting enabled on init depending on the bootloader or
kexec configured state.

Turns out that we now also wrongly assert dra7 l3init domain PCIe reset
bits causing a hang during reboot. Let's fix the l3init reset bits to
use a 01 map instead of 012 map. There are only two rstctrl bits and not
three. This is documented in TRM "Table 3-1647. RM_PCIESS_RSTCTRL".

Fixes: 5a68c87afde0 ("soc: ti: omap-prm: dra7: add genpd support for remaining PRM instances")
Fixes: 7078a5ba7a58 ("soc: ti: omap-prm: Fix boot time errors for rst_map_012 bits 0 and 1")
Cc: Kishon Vijay Abraham I 
Reported-by: Yongqin Liu 
Signed-off-by: Tony Lindgren

soc: ti: k3-ringacc: Use of_device_get_match_data()

2021-02-01T04:58:49+00:00

Simplify the retrieval of getting the match data in the probe
function by directly using of_device_get_match_data() instead
of using of_match_node() and getting data.

Signed-off-by: Suman Anna 
Signed-off-by: Santosh Shilimkar

soc: ti: pruss: Refactor the CFG sub-module init

2021-02-01T04:53:43+00:00

The CFG sub-module is not present on some earlier SoCs like the
DA850/OMAPL-138 in the TI Davinci family. Refactor out the CFG
sub-module parse and initialization logic into a separate function
to make it easier to add logic for the PRUSS IP on the above legacy
SoC families.

Signed-off-by: Suman Anna 
Signed-off-by: Santosh Shilimkar

soc: ti: pruss: Correct the pruss_clk_init error trace text

2021-01-25T04:51:37+00:00

The pruss_clk_init() function can register more than one clock.
Correct the existing misleading error trace upon a failure within
this function.

Signed-off-by: Suman Anna 
Signed-off-by: Santosh Shilimkar

soc: ti: pm33xx: Fix some resource leak in the error handling paths of the probe function

2021-01-25T04:51:36+00:00

'am33xx_pm_rtc_setup()' allocates some resources that must be freed on the
error. Commit 2152fbbd47c0 ("soc: ti: pm33xx: Simplify RTC usage to prepare
to drop platform data") has introduced the use of these resources but has
only updated the remove function.

Fix the error handling path of the probe function now.

Fixes: 2152fbbd47c0 ("soc: ti: pm33xx: Simplify RTC usage to prepare to drop platform data")
Signed-off-by: Christophe JAILLET 
Signed-off-by: Santosh Shilimkar

soc: ti: knav_qmss: Put refcount for dev node in failure case

2021-01-25T04:51:36+00:00

for_each_child_of_node increases refcount for each device_node and decreases previous one
in a loop, but in case jump out of a loop current node refcount has no chnase for decreases
so requires an of_node_put for jupm out cases.

Fix based on raport from
scripts/coccinelle/iterators/for_each_child.cocci

Signed-off-by: Vasyl Gomonovych 
Signed-off-by: Santosh Shilimkar