From 7336dcefac4d8f94fa205a668138a6462841acc4 Mon Sep 17 00:00:00 2001 From: John Lin Date: Mon, 16 Nov 2015 14:41:07 +0800 Subject: [PATCH] ASoC: rl6231: fix range of DMIC clock The maximum DMIC clock rate is 3.072 MHz for most DMIC. And it will get better performance in higher clock rate. If we set maximum to 3 MHz in driver, we will get a clock rate which is not even close to 3 MHz. For example, if DMIC clock source is 24.576 MHz, the DMIC clock will be about 1.5 MHz in current code. But it will be 3.072 MHz with this patch. Signed-off-by: John Lin Signed-off-by: Mark Brown --- sound/soc/codecs/rl6231.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/rl6231.c b/sound/soc/codecs/rl6231.c index 18b4292..1dc68ab 100644 --- a/sound/soc/codecs/rl6231.c +++ b/sound/soc/codecs/rl6231.c @@ -82,8 +82,8 @@ int rl6231_calc_dmic_clk(int rate) for (i = 0; i < ARRAY_SIZE(div); i++) { if ((div[i] % 3) == 0) continue; - /* find divider that gives DMIC frequency below 3MHz */ - if (3000000 * div[i] >= rate) + /* find divider that gives DMIC frequency below 3.072MHz */ + if (3072000 * div[i] >= rate) return i; } -- 2.7.4