[PATCH v2 0/5] drivers: firmware: psci: add basic v1.0 support

[Jisheng Zhang]

On Mon, 14 Sep 2015 14:35:10 +0100
Lorenzo Pieralisi <lorenzo.pieralisi at arm.com> wrote:

> On Wed, Jul 08, 2015 at 06:16:46PM +0100, Lorenzo Pieralisi wrote:
> > This series is a v2 of a previous posting:
> > 
> > http://lists.infradead.org/pipermail/linux-arm-kernel/2015-May/347352.html
> > 
> > v1 -> v2:
> > 
> > - rebased against v4.2-rc1
> > - added version to 1.0 specific macros
> > 
> > The PSCI v1.0 specification[1] introduces a brand new set of features
> > (ie OS initiated mode and system suspend being the most notable ones)
> > and provides updates to the PSCI 0.2 specification, keeping backward
> > compatibility.
> > 
> > PSCI v1.0 applies minor changes to function return codes and function
> > behaviour (ie AFFINITY_INFO requirements, INVALID_ADDRESS return value)
> > and introduces a new power_state parameter format (extended stateid)
> > that is probeable with the newly introduced PSCI_FEATURES call.
> > 
> > This series upgrades the current kernel PSCI layer implementation with
> > a set of patches that make the kernel PSCI v1.0 compliant.
> > 
> > The series augments the PSCI firmware layer with a hook to retrieve
> > the features for a specific PSCI function (ie based on the PSCI_FEATURES
> > call) and uses it to detect the power_state parameter format, updating
> > the power_state parameter handling functions accordingly.
> > 
> > In order to prevent firmware interfaces mismatch, a new compatible
> > string is added to the DT bindings to characterize a 1.0 compliant
> > firmware interface.
> > 
> > The series is built on top of M.Rutland's patch series:
> > 
> > http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/353795.html
> > 
> > Tested on a Juno board.
> 
> Rebased against 4.3-rc1 (that includes the patch series above), if there
> are no objections I will queue this series for v4.4.

Tested on Marvell BG4CT DMP board. So feel free to add

Tested-by: Jisheng Zhang <jszhang at marvell.com>

Thanks

> 
> Thanks,
> Lorenzo
> 
> > 
> > [1] http://infocenter.arm.com/help/topic/com.arm.doc.den0022c/DEN0022C_Power_State_Coordination_Interface.pdf
> > 
> > Lorenzo Pieralisi (5):
> >   drivers: firmware: psci: add INVALID_ADDRESS return value
> >   drivers: firmware: psci: move power_state handling to generic code
> >   drivers: firmware: psci: add PSCI_FEATURES call
> >   drivers: firmware: psci: add extended stateid power_state support
> >   drivers: firmware: psci: add PSCI v1.0 DT bindings
> > 
> >  Documentation/devicetree/bindings/arm/psci.txt |  6 +++
> >  arch/arm64/kernel/psci.c                       | 14 -------
> >  drivers/firmware/psci.c                        | 53 ++++++++++++++++++++++++++
> >  include/linux/psci.h                           |  2 +
> >  include/uapi/linux/psci.h                      | 15 ++++++++
> >  5 files changed, 76 insertions(+), 14 deletions(-)
> > 
> > -- 
> > 2.2.1
> >