[alsa-devel] [PATCH 3/7] ASoC: arizona: Correct relationship between VCO corner and Fref

[Charles Keepax]

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 at wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax at opensource.wolfsonmicro.com>
---
 sound/soc/codecs/arizona.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index e9e0b6b..97cc80d 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1623,8 +1623,8 @@ static int arizona_calc_fratio(struct arizona_fll *fll,
 	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)) {
-- 
1.7.2.5