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ARM: S3C2443: Accommodate cpufreq frequency scheme in armdiv
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Cpufreq uses frequencies in kHz and not Hz, so set_rate and round_rate
would be called with a frequency of 266666000 instead of 266666666 but
the clock functions check for rates smaller or equal to the targetrate.

As the armdiv does not support steps this small we can accommodate
this by simply also setting the last 3 digits of the calculated rate
to zero.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Heiko Stuebner authored and Kukjin Kim committed Oct 14, 2011
1 parent f9f7c75 commit 866a1c8
Showing 1 changed file with 4 additions and 2 deletions.
6 changes: 4 additions & 2 deletions arch/arm/plat-s3c24xx/s3c2443-clock.c
Original file line number Diff line number Diff line change
Expand Up @@ -185,7 +185,8 @@ static unsigned long s3c2443_armclk_roundrate(struct clk *clk,
for (ptr = 0; ptr < nr_armdiv; ptr++) {
div = armdiv[ptr];
if (div) {
calc = parent / div;
/* cpufreq provides 266mhz as 266666000 not 266666666 */
calc = (parent / div / 1000) * 1000;
if (calc <= rate && div < best)
best = div;
}
Expand Down Expand Up @@ -225,7 +226,8 @@ static int s3c2443_armclk_setrate(struct clk *clk, unsigned long rate)
for (ptr = 0; ptr < nr_armdiv; ptr++) {
div = armdiv[ptr];
if (div) {
calc = parent / div;
/* cpufreq provides 266mhz as 266666000 not 266666666 */
calc = (parent / div / 1000) * 1000;
if (calc <= rate && div < best) {
best = div;
val = ptr;
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