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    Subject[PATCH v2 00/10] clk: renesas: rzg2l: Add support for power domains
    Date
    From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

    Hi,

    Series adds support for power domains on rzg2l driver.

    RZ/G2L kind of devices support a functionality called MSTOP (module
    stop/standby). According to hardware manual the module could be switch
    to standby after its clocks are disabled. The reverse order of operation
    should be done when enabling a module (get the module out of standby,
    enable its clocks etc).

    In [1] the MSTOP settings were implemented by adding code in driver
    to attach the MSTOP state to the IP clocks. But it has been proposed
    to implement it as power domain. The result is this series.

    Along with MSTOP functionality there is also module power down
    functionality (which is currently available only on RZ/G3S). This has
    been also implemented through power domains.

    The DT bindings were updated with power domain IDs (plain integers
    that matches the DT with driver data structures). The current DT
    bindings were updated with module IDs for the modules listed in tables
    with name "Registers for Module Standby Mode" (see HW manual) exception
    being RZ/G3S where, due to the power down functionality, the DDR,
    TZCDDR, OTFDE_DDR were also added, to avoid system being blocked due
    to the following lines of code from patch 7/17.

    + /* Prepare for power down the BUSes in power down mode. */
    + if (info->pm_domain_pwrdn_mstop)
    + writel(CPG_PWRDN_MSTOP_ENABLE, priv->base + CPG_PWRDN_MSTOP);

    Domain IDs were added to all SoC specific bindings.

    Thank you,
    Claudiu Beznea

    Changes in v2:
    - addressed review comments
    - dropped:
    - dt-bindings: clock: r9a09g011-cpg: Add always-on power domain IDs
    - clk: renesas: r9a07g043: Add initial support for power domains
    - clk: renesas: r9a07g044: Add initial support for power domains
    - clk: renesas: r9a09g011: Add initial support for power domains
    - clk: renesas: r9a09g011: Add initial support for power domains
    - arm64: dts: renesas: r9a07g043: Update #power-domain-cells = <1>
    - arm64: dts: renesas: r9a07g044: Update #power-domain-cells = <1>
    - arm64: dts: renesas: r9a07g054: Update #power-domain-cells = <1>
    - arm64: dts: renesas: r9a09g011: Update #power-domain-cells = <1>
    as suggested in the review process
    - dropped "arm64: dts: renesas: rzg3s-smarc-som: Guard the ethernet IRQ
    GPIOs with proper flags" patch as it was integrated
    - added suspend to RAM support
    - collected tag

    [1] https://lore.kernel.org/all/20231120070024.4079344-4-claudiu.beznea.uj@bp.renesas.com/

    Claudiu Beznea (10):
    dt-bindings: clock: r9a07g043-cpg: Add power domain IDs
    dt-bindings: clock: r9a07g044-cpg: Add power domain IDs
    dt-bindings: clock: r9a07g054-cpg: Add power domain IDs
    dt-bindings: clock: r9a08g045-cpg: Add power domain IDs
    dt-bindings: clock: renesas,rzg2l-cpg: Update #power-domain-cells =
    <1> for RZ/G3S
    clk: renesas: rzg2l: Extend power domain support
    clk: renesas: r9a08g045: Add support for power domains
    clk: renesas: rzg2l-cpg: Add suspend/resume support for power domains
    clk: renesas: r9a08g045: Add the RZG2L_PD_F_CONSOLE flag to scif0 PM
    domain
    arm64: dts: renesas: r9a08g045: Update #power-domain-cells = <1>

    .../bindings/clock/renesas,rzg2l-cpg.yaml | 18 +-
    arch/arm64/boot/dts/renesas/r9a08g045.dtsi | 20 +-
    drivers/clk/renesas/r9a08g045-cpg.c | 61 ++++
    drivers/clk/renesas/rzg2l-cpg.c | 267 +++++++++++++++++-
    drivers/clk/renesas/rzg2l-cpg.h | 78 +++++
    include/dt-bindings/clock/r9a07g043-cpg.h | 52 ++++
    include/dt-bindings/clock/r9a07g044-cpg.h | 58 ++++
    include/dt-bindings/clock/r9a07g054-cpg.h | 58 ++++
    include/dt-bindings/clock/r9a08g045-cpg.h | 70 +++++
    9 files changed, 658 insertions(+), 24 deletions(-)

    --
    2.39.2


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