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    Subject[PATCH v1 2/5] drm: bridge: dw_hdmi: enable overflow workaround for v2.13a
    Date
    From: Sandor Yu <Sandor.yu@nxp.com>

    iMX865 HDMI (v2.13a) have been identified as needing the workaround.
    Tests show that one iteration is enough.

    Without the workaround, iMX865 HDMI audio may not work
    after cable plugout/in, because HDMI mode is not really set in
    register HDMI_FC_INVIDCONF.

    Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
    ---
    drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 7 ++++---
    1 file changed, 4 insertions(+), 3 deletions(-)

    diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
    index 4befc104d220..b11577de4836 100644
    --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
    +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
    @@ -2087,9 +2087,9 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
    *
    * The number of iterations matters and depends on the HDMI TX revision
    * (and possibly on the platform). So far i.MX6Q (v1.30a), i.MX6DL
    - * (v1.31a) and multiple Allwinner SoCs (v1.32a) have been identified
    - * as needing the workaround, with 4 iterations for v1.30a and 1
    - * iteration for others.
    + * (v1.31a), iMX865(v2.13a) and multiple Allwinner SoCs (v1.32a)
    + * have been identified as needing the workaround,
    + * with 4 iterations for v1.30a and 1 iteration for others.
    * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
    * the workaround with a single iteration.
    * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
    @@ -2106,6 +2106,7 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
    case 0x201a:
    case 0x211a:
    case 0x212a:
    + case 0x213a:
    count = 1;
    break;
    default:
    --
    2.25.1
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