ASoC: rcar: ssi: don't set SSICR.CKDV = 000 with SSIWSR.CONT
[ Upstream commit 6b8530cc056efd4a11b034ca5b1e9f7e9563f553 ]
R-Car Datasheet is indicating "SSICR.CKDV = 000 is invalid when
SSIWSR.WS_MODE = 1 or SSIWSR.CONT = 1".
Current driver will set CONT, thus, we shouldn't use CKDV = 000.
This patch fixup it.
Reported-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index a9a43ac..fefa6ad 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -233,6 +233,15 @@
for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) {
/*
+ * It will set SSIWSR.CONT here, but SSICR.CKDV = 000
+ * with it is not allowed. (SSIWSR.WS_MODE with
+ * SSICR.CKDV = 000 is not allowed either).
+ * Skip it. See SSICR.CKDV
+ */
+ if (j == 0)
+ continue;
+
+ /*
* this driver is assuming that
* system word is 32bit x chan
* see rsnd_ssi_init()