clk: samsung: s3c2410: Fix PLL rates
[ Upstream commit
179db533c08431f509a3823077549773d519358b ]
Rates declared in PLL rate tables should match exactly rates calculated from
the PLL coefficients. If that is not the case, rate of the PLL's child clock
might be set not as expected. For instance, if in the PLL rates table we have
a
393216000 Hz entry and the real value as returned by the PLL's recalc_rate
callback is
393216003, after setting PLL's clk rate to
393216000 clk_get_rate
will return
393216003. If we now attempt to set rate of a PLL's child divider
clock to
393216000/2 its rate will be
131072001, rather than
196608000.
That is, the divider will be set to 3 instead of 2, because
393216003/2 is
greater than
196608000.
To fix this issue declared rates are changed to exactly match rates generated
by the PLL, as calculated from the P, M, S, K coefficients.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Tomasz Figa <tomasz.figa@gmail.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>