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[0/3] Add support for assigned-performance-states

Message ID 1596541616-27688-1-git-send-email-rnayak@codeaurora.org
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Series Add support for assigned-performance-states | expand

Message

Rajendra Nayak Aug. 4, 2020, 11:46 a.m. UTC 
Some devics within power-domains with performance states do not
support DVFS, but still need to vote on a default/static state
while they are active. Add support for a new device tree property
which the clients can use to specify this and add support in
kernel to parse this value and vote.

Rajendra Nayak (3):
  dt-bindings: power: Introduce 'assigned-performance-states' property
  PM / Domains: Add support for 'assigned-performance-states'
  arm64: dts: sc7180: Add assigned-performance-states for i2c

 .../devicetree/bindings/power/power-domain.yaml    | 47 ++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/sc7180.dtsi               | 24 +++++++++++
 drivers/base/power/domain.c                        | 27 +++++++++++++
 include/linux/pm_domain.h                          |  1 +
 4 files changed, 99 insertions(+)

Comments

Stephen Boyd Aug. 5, 2020, 6:41 a.m. UTC | #1 
Quoting Rajendra Nayak (2020-08-04 04:46:56)
> qup-i2c devices on sc7180 are clocked with a fixed clock (19.2 Mhz)

s/Mhz/MHz/

> Though qup-i2c does not support DVFS, it still needs to vote for a
> performance state on 'cx' to satisfy the 19.2 Mhz clock frequency

Capitalize CX?

> requirement.
> 
> Use 'assigned-performance-states' to pass this information from
> device tree, and also add the power-domains property to specify
> the cx power-domain.
> 
> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)

Can you generate this patch with more context? The hunks all look the
same so it's really hard to see where they apply.