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    Subject[PATCH v2 0/5] clk: samsung: Introduce Exynos850 SoC clock driver
    Date
    This patch series provides the implementation for Exynos850 clock
    driver, its documentation and corresponding changes for Samsung clock
    infrastructure (adds new PLL types used in Exynos850 SoC, following
    TRM).

    I tried to follow already established design for Samsung clock drivers
    (getting most insights from Exynos5433 clock driver), and integrate the
    driver into existing infrastructure. The whole driver was implemented
    from scratch, using mostly TRM and downstream kernel for clock
    dependencies/hierarchy info.

    For now only basic clocks are implemented, including next blocks:
    - CMU_TOP
    - CMU_PERI
    - CMU_CORE
    - CMU_HSI
    - CMU_DPU

    Some CMUs are still not implemented, but that can be added in future,
    when the need arises. The driver also lacks CLKOUT support, PM ops and
    automatic clocks control (using Q-Channel protocol). All that can be
    added independently later.

    Implemented clock tree was tested via UART and MMC drivers, and using
    DebugFS clk support (e.g. using 'clk_summary' file). In order to keep
    all clocks running I added 'clk_ignore_unused' kernel param in my local
    tree, and defined CLOCK_ALLOW_WRITE_DEBUGFS in clk.c for actually
    testing the clocks via DebugFS.

    Changes in v2:
    - Added CMU_DPU implementation
    - Moved bus clock enablement to clk-exynos850.c
    - See also "v2 changes" list in each particular patch

    Sam Protsenko (5):
    clk: samsung: clk-pll: Implement pll0822x PLL type
    clk: samsung: clk-pll: Implement pll0831x PLL type
    dt-bindings: clock: Add bindings definitions for Exynos850 CMU
    dt-bindings: clock: Document Exynos850 CMU bindings
    clk: samsung: Introduce Exynos850 clock driver

    .../clock/samsung,exynos850-clock.yaml | 185 ++++
    drivers/clk/samsung/Makefile | 1 +
    drivers/clk/samsung/clk-exynos850.c | 835 ++++++++++++++++++
    drivers/clk/samsung/clk-pll.c | 196 ++++
    drivers/clk/samsung/clk-pll.h | 2 +
    include/dt-bindings/clock/exynos850.h | 141 +++
    6 files changed, 1360 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml
    create mode 100644 drivers/clk/samsung/clk-exynos850.c
    create mode 100644 include/dt-bindings/clock/exynos850.h

    --
    2.30.2

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