drm: bridge: dw-hdmi: Fix overflow workaround for Amlogic Meson GX SoCs

The Amlogic Meson GX SoCs, embedded the v2.01a controller, has been also
identified needing this workaround.
This patch adds the corresponding version to enable a single iteration for
this specific version.

Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version")
Acked-by: Archit Taneja <architt@codeaurora.org>
[narmstrong: s/identifies/identified and rebased against Jernej's change]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1519386277-25902-1-git-send-email-narmstrong@baylibre.com

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index f9802399cc0de27dae4131a20ceab434b370114f..53ebbe2904b66bcd6c74c0209ab82ba1d2424825 100644 (file)
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1654,6 +1654,8 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
         * (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.
+        * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
+        * the workaround with a single iteration.
         */
 
        switch (hdmi->version) {
@@ -1662,6 +1664,7 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
                break;
        case 0x131a:
        case 0x132a:
+       case 0x201a:
                count = 1;
                break;
        default: