[v3,0/3] AT91 PM improvements

Message

Claudiu Beznea Aug. 5, 2020, 8:36 a.m. UTC

Hi,

This series adds ULP0 fast mode intended to reduce the suspend/resume
time in the detriment of power consumption (patch 1/3).
Along with this patch 2/3 adds code to avoid requesting a PM mode
not available on platforms not supporting it.
Patch 3/3 decrements a device_node refcount after its usage.

Thank you,
Claudiu Beznea

Changes in v3:
- force STANDBY and ULP0 modes for rm9200 and at91sam9 to avoid
  looping over all available modes and thus preserving booting time
- keep static in "static const int modes[] __initconst" in *_pm_init()
  functions to avoid compilation error "error: section attribute cannot
  be specified for local variables const int modes[] __initconst = {"
- remove sama5_pm() introduced in v2

Changes in v2:
- in patch 2/3:
	- move per SoC supported mode arrays in *_pm_init() functions.
	- use 2 booleans in at91_pm_modes_validate() for modes validation
	- continue to use array of supported modes in at91rm9200_pm_init()
	  and at91sam9_pm_init() instead of forcing
	  soc_pm.data.standby_mode = AT91_PM_STANDBY and
	  soc_pm.data.suspend_mode = AT91_PM_ULP0 to breaking the user
	  configuration (it might request ulp0 as standby mode or vice versa)

Claudiu Beznea (3):
  ARM: at91: pm: add support for ULP0 fast wakeup
  ARM: at91: pm: add per soc validation of pm modes
  ARM: at91: pm: of_node_put() after its usage

 arch/arm/mach-at91/pm.c         | 90 ++++++++++++++++++++++++++++++++++++++---
 arch/arm/mach-at91/pm.h         |  5 ++-
 arch/arm/mach-at91/pm_suspend.S | 41 +++++++++++++++++--
 3 files changed, 125 insertions(+), 11 deletions(-)

Comments

Alexandre Belloni Aug. 17, 2020, 9:20 a.m. UTC | #1

On Wed, 5 Aug 2020 11:36:47 +0300, Claudiu Beznea wrote:
> This series adds ULP0 fast mode intended to reduce the suspend/resume
> time in the detriment of power consumption (patch 1/3).
> Along with this patch 2/3 adds code to avoid requesting a PM mode
> not available on platforms not supporting it.
> Patch 3/3 decrements a device_node refcount after its usage.
> 
> Thank you,
> Claudiu Beznea
> 
> [...]

Applied, thanks!

[1/3] ARM: at91: pm: add support for ULP0 fast wakeup
      commit: e70bfc2fa8fe1a95a522f9d1ccf24d3d9b81366a
[2/3] ARM: at91: pm: add per soc validation of pm modes
      commit: 39add36049c347dffcb2be872dd442c137625f17
[3/3] ARM: at91: pm: of_node_put() after its usage
      commit: e222f943519564978e082c152b4140a47e93392c

Best regards,