ASoC: arizona: Correct relationship between VCO corner and Fref
When configuring the FLL we must ensure that the reference clock passed
to the FLL is under a certain limit. This limit was specified
incorrectly in the current code, this patch corrects this. Although the
error will only be encountered in some edge cases.
Reported-by: Ryo Tsutsui <ryo.tsutsui@wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 4c4727f..6084af7 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1578,8 +1578,8 @@
while (div <= ARIZONA_FLL_MAX_REFDIV) {
for (ratio = init_ratio; ratio <= ARIZONA_FLL_MAX_FRATIO;
ratio++) {
- if (ARIZONA_FLL_VCO_CORNER / (fll->vco_mult * ratio) <
- Fref)
+ if ((ARIZONA_FLL_VCO_CORNER / 2) /
+ (fll->vco_mult * ratio) < Fref)
break;
if (target % (ratio * Fref)) {