drivers: imx: sai: W1C for a clean start

iuliana-prodan · dbaluta · commit 5f93ad4729ee · 2021-03-15T20:02:17.000+02:00
On start W1C the Work Start Flag, Sync Error Flag and
FIFO Error Flag.

Write a logic 1 to this field to clear each of this
flags and have a clean start for SAI.

Signed-off-by: Iuliana Prodan &lt;iuliana.prodan@nxp.com&gt;
diff --git a/src/drivers/imx/sai.c b/src/drivers/imx/sai.c
@@ -66,6 +66,14 @@ static void sai_start(struct dai *dai, int direction)
 		}
 	}
 
+	/* W1C */
+	dai_update_bits(dai, REG_SAI_XCSR(direction),
+			REG_SAI_CSR_FEF, 1);
+	dai_update_bits(dai, REG_SAI_XCSR(direction),
+			REG_SAI_CSR_SEF, 1);
+	dai_update_bits(dai, REG_SAI_XCSR(direction),
+			REG_SAI_CSR_WSF, 1);
+
 	/* add one word to FIFO before TRCE is enabled */
 	if (direction == DAI_DIR_PLAYBACK)
 		dai_write(dai, REG_SAI_TDR0, 0x0);

Original file line number	Diff line number	Diff line change
`@@ -66,6 +66,14 @@ static void sai_start(struct dai *dai, int direction)`
`66`	`66`	`}`
`67`	`67`	`}`
`68`	`68`
	`69`	`+ /* W1C */`
	`70`	`+ dai_update_bits(dai, REG_SAI_XCSR(direction),`
	`71`	`+ REG_SAI_CSR_FEF, 1);`
	`72`	`+ dai_update_bits(dai, REG_SAI_XCSR(direction),`
	`73`	`+ REG_SAI_CSR_SEF, 1);`
	`74`	`+ dai_update_bits(dai, REG_SAI_XCSR(direction),`
	`75`	`+ REG_SAI_CSR_WSF, 1);`
	`76`	`+`
`69`	`77`	`/* add one word to FIFO before TRCE is enabled */`
`70`	`78`	`if (direction == DAI_DIR_PLAYBACK)`
`71`	`79`	`dai_write(dai, REG_SAI_TDR0, 0x0);`