[PATCH v7 0/6] clk: qcom: use power-domain for sm8250's clock controllers

Dmitry Baryshkov
2021-08-29T15:48:03Z

On SM8250 both the display and video clock controllers are powered up by
the MMCX power domain. Handle this by linking clock controllers to the
proper power domain, and using runtime power management to enable and
disable the MMCX power domain.

Dependencies:
https://lore.kernel.org/linux-pm/1628767642-4008-1-git-send-email-rnayak@codeaurora.org/
(pending inclusion into 5.15)

Changes since v6:
- Dropped dependency on Bjorn's patches
- Restored required-opps properties
- Held pm device state while gdsc is powered on, removing dependency on
genpd's power_on() powering the domain into required state.

Changes since v5:
- Dropped devm_pm_runtime_enable callback to remove extra dependency

Changes since v4:
- Dropped pm_runtime handling from drivers/clk/qcom/common.c Moved the
code into dispcc-sm8250.c and videocc-sm8250.c

Changes since v3:
- Wrap gdsc_enable/gdsc_disable into pm_runtime_get/put calls rather
than calling pm_runtime_get in gdsc_enabled and _put in gdsc_disable
- Squash gdsc patches together to remove possible dependencies between
two patches.

Changes since v2:
- Move pm_runtime calls from generic genpd code to the gdsc code for
now (as suggested by Ulf & Bjorn)

Changes since v1:
- Rebase on top of Bjorn's patches, removing the need for setting
performance state directly.
- Move runtime PM calls from GDSC code to generic genpd code.
- Always call pm_runtime_enable in the Qualcomm generic clock
controller code.
- Register GDSC power domains as subdomains of the domain powering the
clock controller if there is one.

----------------------------------------------------------------
Dmitry Baryshkov (8):
dt-bindings: clock: qcom,dispcc-sm8x50: add mmcx power domain
dt-bindings: clock: qcom,videocc: add mmcx power domain
clk: qcom: dispcc-sm8250: use runtime PM for the clock controller
clk: qcom: videocc-sm8250: use runtime PM for the clock controller
clk: qcom: gdsc: enable optional power domain support
arm64: dts: qcom: sm8250: remove mmcx regulator
clk: qcom: dispcc-sm8250: stop using mmcx regulator
clk: qcom: videocc-sm8250: stop using mmcx regulator

.../bindings/clock/qcom,dispcc-sm8x50.yaml | 13 ++++++
.../devicetree/bindings/clock/qcom,videocc.yaml | 13 ++++++
arch/arm64/boot/dts/qcom/sm8250.dtsi | 13 ++----
drivers/clk/qcom/dispcc-sm8250.c | 28 ++++++++++--
drivers/clk/qcom/gdsc.c | 51 ++++++++++++++++++++--
drivers/clk/qcom/gdsc.h | 2 +
drivers/clk/qcom/videocc-sm8250.c | 31 ++++++++++---
7 files changed, 130 insertions(+), 21 deletions(-)