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ASoC: rcar: ssi: don't set SSICR.CKDV = 000 with SSIWSR.CONT

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[ 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>
This commit is contained in:
Kuninori Morimoto 2017-03-22 04:02:43 +00:00 committed by Greg Kroah-Hartman
parent 25952d168d
commit ffe11f9f64
1 changed files with 9 additions and 0 deletions
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9
sound/soc/sh/rcar/ssi.c
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@ -142,6 +142,15 @@ static int rsnd_ssi_master_clk_start(struct rsnd_ssi *ssi,
*/
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 64fs (= 2 x 32bit)