[PATCH v2 0/2] clk: meson: MPLL fixes for Meson8b

[Jerome Brunet]

MPLL clocks have been recently added to the Meson8b clock driver: [0]

On meson8b boards this unfortunately causes a division by zero error which
is fixed by patch #1 in this series.

While investigating this I found that there also seems to be a 32bit
overflow in the calculation in rate_from_params(), which is fixed by
patch #2 in this series.

Changes since v1: [1]
 - Return an error code when the mpll parameters are out of the specified
   range.
 - As agreed with martin, use DIV_ROUND_UP_ULL instead of mul_u64_u32_div.

[0] http://lists.infradead.org/pipermail/linux-amlogic/2017-March/002757.html
[1] https://lkml.kernel.org/r/20170401130225.8811-1-martin.blumenstingl@googlemail.com

Martin Blumenstingl (2):
  clk: meson: mpll: fix division by zero in rate_from_params
  clk: meson: mpll: use 64bit math in rate_from_params

 drivers/clk/meson/clk-mpll.c | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

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2.9.3