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-rw-r--r--sound/soc/codecs/arizona.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index ef62c435848..2899cb909d1 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -910,7 +910,7 @@ static int arizona_calc_fll(struct arizona_fll *fll,
cfg->n = target / (ratio * Fref);
- if (target % Fref) {
+ if (target % (ratio * Fref)) {
gcd_fll = gcd(target, ratio * Fref);
arizona_fll_dbg(fll, "GCD=%u\n", gcd_fll);
@@ -922,6 +922,15 @@ static int arizona_calc_fll(struct arizona_fll *fll,
cfg->lambda = 0;
}
+ /* Round down to 16bit range with cost of accuracy lost.
+ * Denominator must be bigger than numerator so we only
+ * take care of it.
+ */
+ while (cfg->lambda >= (1 << 16)) {
+ cfg->theta >>= 1;
+ cfg->lambda >>= 1;
+ }
+
arizona_fll_dbg(fll, "N=%x THETA=%x LAMBDA=%x\n",
cfg->n, cfg->theta, cfg->lambda);
arizona_fll_dbg(fll, "FRATIO=%x(%d) OUTDIV=%x REFCLK_DIV=%x\n",