SAI provide multiple master clock source options selectable
via bit MSEL of TCR2/RCR2.
All possible master clock sources are stored in sai->mclk_clk
array. Current implementation assumes that MCLK0 source is always
busclk, but this is wrong!
For example, on i.MX8QM we have:
00b - Bus Clock selected.
01b - Master Clock (MCLK) 1 option selected.
10b - Master Clock (MCLK) 2 option selected.
11b - Master Clock (MCLK) 3 option selected.
while on i.MX6SX we have:
00b - Master Clock (MCLK) 1 option selected.
01b - Master Clock (MCLK) 1 option selected.
10b - Master Clock (MCLK) 2 option selected.
11b - Master Clock (MCLK) 3 option selected.
So, this patch will read mclk0 source clock from device tree.
Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxx>
---
sound/soc/fsl/fsl_sai.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index db9e0872f73d..b563004fb89f 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -826,8 +826,7 @@ static int fsl_sai_probe(struct platform_device *pdev)
sai->bus_clk = NULL;
}
- sai->mclk_clk[0] = sai->bus_clk;
- for (i = 1; i < FSL_SAI_MCLK_MAX; i++) {
+ for (i = 0; i < FSL_SAI_MCLK_MAX; i++) {
sprintf(tmp, "mclk%d", i);
sai->mclk_clk[i] = devm_clk_get(&pdev->dev, tmp);
if (IS_ERR(sai->mclk_clk[i])) {
--
2.17.1
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