@@ -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;
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(+)