Without delay CBUS sometimes was not reset properly.
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
---
drivers/gpu/drm/bridge/sil-sii8620.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c
index e84cda0..6ef1a4d 100644
--- a/drivers/gpu/drm/bridge/sil-sii8620.c
+++ b/drivers/gpu/drm/bridge/sil-sii8620.c
@@ -891,11 +891,10 @@ static void sii8620_hw_reset(struct sii8620 *ctx)
static void sii8620_cbus_reset(struct sii8620 *ctx)
{
- sii8620_write_seq_static(ctx,
- REG_PWD_SRST, BIT_PWD_SRST_CBUS_RST
- | BIT_PWD_SRST_CBUS_RST_SW_EN,
- REG_PWD_SRST, BIT_PWD_SRST_CBUS_RST_SW_EN
- );
+ sii8620_write(ctx, REG_PWD_SRST, BIT_PWD_SRST_CBUS_RST
+ | BIT_PWD_SRST_CBUS_RST_SW_EN);
+ usleep_range(10000, 20000);
+ sii8620_write(ctx, REG_PWD_SRST, BIT_PWD_SRST_CBUS_RST_SW_EN);
}
static void sii8620_set_auto_zone(struct sii8620 *ctx)
--
2.7.4
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