[PATCH 0/1] clk: nuvoton: ma35d1-divider: use direct formula instead of divider table
From: Joey Lu
Date: Tue Sep 29 2026 - 03:25:40 EST
The MA35D1 ADC clock divider register implements a simple closed-form
relation, rate = parent_rate / (2 * (N + 1)), but the driver models it
by building a clk_div_table with one entry per possible divider value
(up to 2^width entries) and feeding it through the generic
divider_recalc_rate()/divider_determine_rate()/divider_get_val() helpers.
Replace the table with direct arithmetic in recalc_rate()/determine_rate()/
set_rate(), and drop the unused mask_bit mechanism, whose only call site
passed a bitmask instead of a bit index, causing an out-of-range BIT()
shift.
Joey Lu (1):
clk: nuvoton: ma35d1-divider: use direct formula instead of divider
table
drivers/clk/nuvoton/clk-ma35d1-divider.c | 73 +++++++++++-------------
drivers/clk/nuvoton/clk-ma35d1.c | 2 +-
drivers/clk/nuvoton/clk-ma35d1.h | 2 +-
3 files changed, 36 insertions(+), 41 deletions(-)
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2.43.0