CC clk Complete series at http://lore.kernel.org/r/1589214838-18075-1-git-send-email-uli+renesas@xxxxxxxx On Mon, May 11, 2020 at 6:34 PM Ulrich Hecht <uli+renesas@xxxxxxxx> wrote: > This revision should work more reliably as it keeps the never-disable > handling in the clock driver instead of relying on the semantics of > CLK_IGNORE_UNUSED, which still allows clocks to be turned off for power > management. > > This series adds the option for declaring clocks as "never-disable", i.e. > clocks that will not be turned on if not used, but also not turned off if > unused. It also enables this option for the RWDT clocks in (almost) all > SoCs. > > The point of this is to allow a WDT that has been enabled by the bootloader > to survive these events: > > - deferred probing of the WDT device, which can lead the clock driver > to disable the WDT clock until the WDT is re-probed, giving it a > blind spot > - probe failure in the WDT driver > > There are a number of Gen2 and RZ/G1 SoCs that have the RWDT clock declared > as critical in order to allow SMP bringup code to work. These have been > left as they are. > > CU > Uli > > > Changes since v2: > - use the term "never-disable" instead of "ignore-unused" > - do the handling internally instead of relying on the behavior of > CLK_IGNORE_UNUSED > > Changes since v1: > - rename data structures for clarity > - squash SoC-specific patches into one per family > > > Ulrich Hecht (3): > clk: renesas: cpg-mssr: add support for never-disable clocks > clk: renesas: rcar-gen3: mark RWDT clocks as never-disable > clk: renesas: rzg2: mark RWDT clock as never-disable > > drivers/clk/renesas/r8a774a1-cpg-mssr.c | 5 +++++ > drivers/clk/renesas/r8a774b1-cpg-mssr.c | 5 +++++ > drivers/clk/renesas/r8a774c0-cpg-mssr.c | 5 +++++ > drivers/clk/renesas/r8a7795-cpg-mssr.c | 6 +++++- > drivers/clk/renesas/r8a7796-cpg-mssr.c | 6 +++++- > drivers/clk/renesas/r8a77965-cpg-mssr.c | 5 +++++ > drivers/clk/renesas/r8a77970-cpg-mssr.c | 6 +++++- > drivers/clk/renesas/r8a77980-cpg-mssr.c | 6 +++++- > drivers/clk/renesas/r8a77990-cpg-mssr.c | 5 +++++ > drivers/clk/renesas/r8a77995-cpg-mssr.c | 6 +++++- > drivers/clk/renesas/renesas-cpg-mssr.c | 10 ++++++++++ > drivers/clk/renesas/renesas-cpg-mssr.h | 9 +++++++++ > 12 files changed, 69 insertions(+), 5 deletions(-)
