Edge2 Android with Dual Independent Displays (HDMI + DP [ + DSI ])

Edge2 Android
1

Please describe your issue below:

We are using the Khadas Edge2 board for our Android Software Development.
One very important feature of the Khdadas board is for us that the Board supports multiple independent displays.
However, on Android, the HDMI display gets always mirrored to the DP display.
Installing the original prebuilt Khadas Ubuntu image prooves that the hardware is capable of driving the HDMI display and the DP display independently.

For the Edge-V board there are information how to achieve this also for Android:

Can you please provide information how to configure Android/HWC for Edge2 to drive two displays independently on Android?

Which system do you use? Android, Ubuntu, OOWOW or others?

Edge2 with custom built Android 12.1 (AAOS)

Which version of system do you use? Khadas official images, self built images, or others?

self built images from khadas github sources Android 12.1 (AAOS 12.1.0_r8)

Post a console log of your issue below:

1|kedge2:/ $ getprop | grep hwc
[init.svc.vendor.hwcomposer-2-1]: [running]
[init.svc_debug_pid.vendor.hwcomposer-2-1]: [345]
[ro.boottime.vendor.hwcomposer-2-1]: [5010434562]
[vendor.ghwc.version]: [HWC2-1.4.6]
[vendor.hwc.compose_policy]: [1]
[vendor.hwc.device.display-0]: [HDMI-A-1:70:connected]
[vendor.hwc.device.display-1]: [DP-1:70:connected:mirror]
[vendor.hwc.device.primary]: [HDMI-A,DP]
[vendor.hwc.hdr_state]: [NORMAL]

2

@jkoehler
[HDMI + DP or DSI ] config:

kernel-5.10$ git diff4
--- a/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts
@@ -198,7 +198,7 @@
        status = "okay";
 };
 
-&dp0_in_vp0 {
+&dp0_in_vp2 {
        status = "okay";
 };

system/core$ git diff
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
modify "HDMI-A,DP" to "HDMI-A"
modify "DSI" to "DSI,DP"
1 Like
3

@goenjoy :+1: Thank you so much for your prompt feedback. Works like a charm.

1 Like
4

How can I set DP as primary?

5

@jkoehler vendor.hwc.device.primary is the main screen configuration, and vendor.hwc.device.extend is the secondary screen configuration.

system/core$ git diff
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
Assign the value of "vendor.hwc.device.primary" to "DP"
1 Like
6

Hi again, the sound trough DP now working, how can i enable?

7

Don’t quite understand what you’re saying?

8

Sorry
The sound through DP doesn’t work, how can I fix it?

9

@davrdz25 Thank you for your feedback on this issue. edge2-android-12-v220920，I have tested this version and it does not have this issue. I also tested the Android 13 version and there was no such issue. Due to the upcoming release of Android 13 version, Android 12 version may no longer be maintained.

1 Like
10

Ok i’ll wait but i need how to fix cuz i’m building from source to set up DP as primary display

11

@davrdz25

hardware/rockchip/audio$ git log -p 3a071f25afdfdeb925bc39b9e98c390f8af5de83
commit 3a071f25afdfdeb925bc39b9e98c390f8af5de83 (tag: android-13.0-mid-rkr3, tag: android-13.0-mid-rkr2)
Author: shine.liu <shine.liu@rock-chips.com>
Date:   Tue Nov 22 14:21:32 2022 +0800

    [audio hal]: fix no sound for dp
    
    Signed-off-by: shine.liu <shine.liu@rock-chips.com>
    Change-Id: I8757705e8939afe7385c3f509ec5b49fca064573

diff --git a/spdif_1_hal/audio_hw.h b/spdif_1_hal/audio_hw.h
index 5aa85ce..c23268d 100755
--- a/spdif_1_hal/audio_hw.h
+++ b/spdif_1_hal/audio_hw.h
@@ -70,7 +70,7 @@
 #define CAPTURE_START_RAMP_MS 100
 
 /* default sampling for default output */
-#define DEFAULT_PLAYBACK_SAMPLERATE 48000
+#define DEFAULT_PLAYBACK_SAMPLERATE 44100
 
 #define DEFAULT_PLAYBACK_CHANNELS 2
 
@@ -123,7 +123,7 @@ struct pcm_config pcm_config_in = {
 #else
 struct pcm_config pcm_config = {
     .channels = 2,
-    .rate = 48000,
+    .rate = 44100,
     .period_size = 512,
     .period_count = 6,
     .format = PCM_FORMAT_S16_LE,
diff --git a/spdif_hal/audio_hw.h b/spdif_hal/audio_hw.h
index 5aa85ce..c23268d 100755
--- a/spdif_hal/audio_hw.h
+++ b/spdif_hal/audio_hw.h
@@ -70,7 +70,7 @@
 #define CAPTURE_START_RAMP_MS 100
 
 /* default sampling for default output */
-#define DEFAULT_PLAYBACK_SAMPLERATE 48000
+#define DEFAULT_PLAYBACK_SAMPLERATE 44100
 
 #define DEFAULT_PLAYBACK_CHANNELS 2
 
@@ -123,7 +123,7 @@ struct pcm_config pcm_config_in = {
 #else
 struct pcm_config pcm_config = {
     .channels = 2,
-    .rate = 48000,
+    .rate = 44100,
     .period_size = 512,
     .period_count = 6,
     .format = PCM_FORMAT_S16_LE,
1 Like