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Subject[PATCH v4 24/24] drm/i2c: tda998x: adjust the audio clock divider for S/PDIF
According to some tests on the Cubox (Marvell Armada 510 + TDA19988),
the S/PDIF input asks for a greater audio clock divider.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
---
drivers/gpu/drm/i2c/tda998x_drv.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index b4827c0..e4dfcb4 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -679,10 +679,14 @@ tda998x_configure_audio(struct tda998x_priv *priv,
* There is no detailed info in the datasheet, so we just
* assume 100MHz requires larger divider.
*/
+ adiv = AUDIO_DIV_SERCLK_8;
if (mode->clock > 100000)
- adiv = AUDIO_DIV_SERCLK_16;
- else
- adiv = AUDIO_DIV_SERCLK_8;
+ adiv++; /* AUDIO_DIV_SERCLK_8 */
+
+ /* S/PDIF asks for a larger divider */
+ if (p->audio_format == AFMT_SPDIF)
+ adiv++; /* AUDIO_DIV_SERCLK_16 or _32 */
+
reg_write(priv, REG_AUDIO_DIV, adiv);

/*
--
1.8.5.3

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