[0/5] clk: renesas: rcar-gen2/gen3: Switch to .determine_rate()

Message

Geert Uytterhoeven June 17, 2019, 12:52 p.m. UTC

Hi Mike, Stephen,

As the .round_rate() callback returns a long clock rate, it cannot
return clock rates that do not fit in signed long, but do fit in
unsigned long.  The newer .determine_rate() callback does not suffer
from this limitation.  In addition, .determine_rate() provides the
ability to specify a rate range.

Hence this patch series switches the Z (CPU) and SD clocks in the R-Car
Gen2 and Gen3 clock drivers from the .round_rate() to the
.determine_rate() callback.

Note that the "div6" clock driver hasn't been converted yet, so div6
clocks still use .round_rate().

This has been tested on R-Car M2-W and R-Car M3-N, and should have no
behavioral impact.

To be queued in clk-renesas-for-v5.3, if approved.

Thanks for your comments!

Geert Uytterhoeven (5):
  clk: renesas: rcar-gen2-legacy: Switch Z clock to .determine_rate()
  clk: renesas: rcar-gen2: Switch Z clock to .determine_rate()
  clk: renesas: rcar-gen3: Switch Z clocks to .determine_rate()
  clk: renesas: rcar-gen3: Avoid double table iteration in SD
    .set_rate()
  clk: renesas: rcar-gen3: Switch SD clocks to .determine_rate()

 drivers/clk/renesas/clk-rcar-gen2.c | 23 ++++++-----
 drivers/clk/renesas/rcar-gen2-cpg.c | 23 ++++++-----
 drivers/clk/renesas/rcar-gen3-cpg.c | 64 ++++++++++++++++-------------
 3 files changed, 61 insertions(+), 49 deletions(-)