Hi
On Mon, Mar 14, 2016 at 9:08 PM, John Hsu KCHSU0@nuvoton.com wrote:
Extend FLL clock source selection. The source can be from MCLK, BCLK or FS.
Signed-off-by: John Hsu KCHSU0@nuvoton.com
sound/soc/codecs/nau8825.c | 82 +++++++++++++++++++++++++++++++++------------- sound/soc/codecs/nau8825.h | 8 +++++ 2 files changed, 67 insertions(+), 23 deletions(-)
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 1c87299..ac264ec 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -1053,6 +1053,37 @@ static int nau8825_set_pll(struct snd_soc_codec *codec, int pll_id, int source, return 0; }
+static int nau8825_mclk_prepare(struct nau8825 *nau8825, unsigned int freq) +{
int ret = 0;nau8825->mclk = devm_clk_get(nau8825->dev, "mclk");if (IS_ERR(nau8825->mclk)) {
Is it possible that clock system is not ready at this point and the method returns -EPROBE_DEFER? If so it matches IS_ERR() but not a real error and the nua8825 driver should backoff and wait a little before clocks are ready.
dev_info(nau8825->dev, "No 'mclk' clock found, assume MCLK is managed externally");return 0;}if (!nau8825->mclk_freq) {ret = clk_prepare_enable(nau8825->mclk);if (ret) {dev_err(nau8825->dev, "Unable to prepare codec mclk\n");return ret;}}