---

static void lt9611_hdmi_set_infoframes(struct lt9611 *lt9611,
				       struct drm_connector *connector,
				       struct drm_display_mode *mode)
{
	union hdmi_infoframe infoframe;
	ssize_t len;
	u8 iframes = 0x0a; /* UD1 infoframe */
	u8 buf[32];
	int ret;
	int i;
	ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe.avi, connector, mode);
	if (ret < 0)
		goto out;
	len = hdmi_infoframe_pack(&infoframe, buf, sizeof(buf));
	if (len < 0)
		goto out;
	for (i = 0; i < len; i++)
		regmap_write(lt9611->regmap, 0x8440 + i, buf[i]);
	ret = drm_hdmi_vendor_infoframe_from_display_mode(&infoframe.vendor.hdmi,  connector,mode);
	if (ret < 0)
		goto out;
	len = hdmi_infoframe_pack(&infoframe, buf, sizeof(buf));
	if (len < 0)
		goto out;
	for (i = 0; i < len; i++)
		regmap_write(lt9611->regmap, 0x8474 + i, buf[i]);
	iframes |= 0x20;
out:
	regmap_write(lt9611->regmap, 0x843d, iframes); /* UD1 infoframe */
}

static void lt9611_bridge_atomic_enable(struct drm_bridge *bridge,struct drm_bridge_state *old_bridge_state)
{
	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
	struct drm_atomic_state *state = old_bridge_state->base.state;
	struct drm_connector *connector;
	struct drm_connector_state *conn_state;
	struct drm_crtc_state *crtc_state;
	struct drm_display_mode *mode;

	connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
	if (WARN_ON(!connector))
		return;
	conn_state = drm_atomic_get_new_connector_state(state, connector);
	if (WARN_ON(!conn_state))
		return;
	crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
	if (WARN_ON(!crtc_state))
		return;
	mode = &crtc_state->adjusted_mode;
	lt9611_mipi_input_digital(lt9611, 0);
	lt9611_pll_setup(lt9611, mode->clock);
	lt9611_mipi_video_setup(lt9611, mode);
	lt9611_pcr_setup(lt9611, mode);
	if (lt9611_power_on(lt9611)) {
		dev_err(lt9611->dev, "power on failed\n");
		return;
	}
	lt9611_mipi_input_analog(lt9611);
	lt9611_hdmi_set_infoframes(lt9611, connector, mode);
	lt9611_hdmi_tx_digital(lt9611, connector->display_info.is_hdmi);
	lt9611_hdmi_tx_phy(lt9611);
	msleep(500);
	lt9611_video_check(lt9611);
	/* Enable HDMI output */
	regmap_write(lt9611->regmap, 0x8130, 0xea);
}

это то, что было. установки регистра 0x84b2 по коду нету