If SAIF0 is used in master and SAIF1 in slave mode setting the SAIF1
register in mxs_saif_set_dai_fmt() does not have any effect on the
interface as the clk gate needs to be cleared before the register can be
written.
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
---
sound/soc/mxs/mxs-saif.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c
index 1e724533dc6e..26c240af8099 100644
--- a/sound/soc/mxs/mxs-saif.c
+++ b/sound/soc/mxs/mxs-saif.c
@@ -309,6 +309,16 @@ static int mxs_saif_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
return -EBUSY;
}
+ /* If SAIF1 is configured as slave, the clk gate needs to be cleared
+ * before the register can be written.
+ */
+ if (saif->id != saif->master_id) {
+ __raw_writel(BM_SAIF_CTRL_SFTRST,
+ saif->base + SAIF_CTRL + MXS_CLR_ADDR);
+ __raw_writel(BM_SAIF_CTRL_CLKGATE,
+ saif->base + SAIF_CTRL + MXS_CLR_ADDR);
+ }
+
scr0 = __raw_readl(saif->base + SAIF_CTRL);
scr0 = scr0 & ~BM_SAIF_CTRL_BITCLK_EDGE & ~BM_SAIF_CTRL_LRCLK_POLARITY \
& ~BM_SAIF_CTRL_JUSTIFY & ~BM_SAIF_CTRL_DELAY;
--
2.11.0
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
