linux-kernel - [PATCH 0/6] soc: samsung: pm_domains: Add Exynos850 support

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Message-Id: <20230308230931.27261-1-semen.protsenko@linaro.org>
Date:   Wed,  8 Mar 2023 17:09:25 -0600
From:   Sam Protsenko <semen.protsenko@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Alim Akhtar <alim.akhtar@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Chanho Park <chanho61.park@...sung.com>,
        David Virag <virag.david003@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/6] soc: samsung: pm_domains: Add Exynos850 support

Power Domains in Exynos850 are not really different from other Exynos
platforms. Enabling Exynos850 support in the PD driver is really just a
matter of adding:

    static const struct exynos_pm_domain_config exynos850_cfg = {
        .local_pwr_cfg = 0x1,
    };

to the driver. But in the face of recent developments, e.g. this patch:

    arm64: dts: exynos: move MIPI phy to PMU node in Exynos5433

it looked logical to rework the PD driver a bit to support its nesting
under the PMU node, while adding Exynos850 support to it. Initially I
only wanted to add syscon regmap support via some dedicated property,
but pulling PD nodes under the PMU syscon looks like more correct way.

This patch series provides next changes:

  1. Make it possible for PD nodes to be children of PMU
  2. Add Exynos850 support to PD driver
  3. A bit of refactoring in PD driver
  4. Corresponding changes to dt-bindings

Dependencies inside of the series:

  - patch #2 depends on patch #1
  - patch #6 depends on patch #1
  - patches 3,4,5,6 should be applied in the same order as in the series

Sam Protsenko (6):
  dt-bindings: power: pd-samsung: Add Exynos850 support
  dt-bindings: power: pd-samsung: Allow pd nodes to be children of PMU
  soc: samsung: pm_domains: Extract DT handling into a separate function
  soc: samsung: pm_domains: Implement proper I/O operations
  soc: samsung: pm_domains: Allow PD to be a child of PMU syscon
  soc: samsung: pm_domains: Add Exynos850 support

 .../devicetree/bindings/power/pd-samsung.yaml |  12 +-
 MAINTAINERS                                   |   1 +
 drivers/soc/samsung/Kconfig                   |   1 +
 drivers/soc/samsung/pm_domains.c              | 132 +++++++++++++++---
 .../power/samsung,exynos850-power.h           |  17 +++
 5 files changed, 142 insertions(+), 21 deletions(-)
 create mode 100644 include/dt-bindings/power/samsung,exynos850-power.h

-- 
2.39.2