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<p>I need to clarify my question.</p>
<p>For Broadwell-U, are there internal 3 display ports? Is the first one set statically as eDP?</p>
<p>How can these ports be set as other type like VGA, HDMI?<br>
</p>
<p>Can all these 3 ports be enabled at same time?</p>
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<p>Zheng<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> coreboot <coreboot-bounces@coreboot.org> on behalf of Zheng Bao <fishbaoz@hotmail.com><br>
<b>Sent:</b> Wednesday, August 2, 2017 6:35 AM<br>
<b>To:</b> coreboot@coreboot.org<br>
<b>Subject:</b> [coreboot] [Broadwell-U]How the eDP, DDI1, DDI2 are enabled?</font>
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<div>---------------------------------<br>
# Enable eDP Hotplug with 6ms pulse<br>
register "gpu_dp_d_hotplug" = "0x06"<br>
<br>
# Enable DDI1 Hotplug with 6ms pulse<br>
register "gpu_dp_b_hotplug" = "0x06"<br>
<br>
# Enable DDI2 Hotplug with 6ms pulse<br>
register "gpu_dp_c_hotplug" = "0x06"<br>
<br>
# Set backlight PWM values for eDP<br>
register "gpu_cpu_backlight" = "0x00000200"<br>
register "gpu_pch_backlight" = "0x04000200"<br>
<br>
# Enable Panel and configure power delays<br>
register "gpu_panel_port_select" = "1" # eDP<br>
register "gpu_panel_power_cycle_delay" = "6" # 500ms<br>
register "gpu_panel_power_up_delay" = "2000" # 200ms<br>
register "gpu_panel_power_down_delay" = "500" # 50ms<br>
register "gpu_panel_power_backlight_on_delay" = "2000" # 200ms<br>
register "gpu_panel_power_backlight_off_delay" = "2000" # 200ms<br>
---------------------------------------<br>
I assume SOC has 3 display port, called eDP, DDI1 and DDI2.<br>
The code above enable eDP only. How <span>are </span>the DDI1 and DDI2 enabled?<br>
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<br>
Zheng<br>
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