On Tuesday, 10 August 2021 09:52:36 CEST Paul Cercueil wrote:
Le mar., août 10 2021 at 01:17:20 +0200, Paul Boddie paul@boddie.org.uk a
écrit :
But then the reported error occurs in the DRM driver:
ingenic-drm 13050000.lcdc0: Unable to init connector ingenic-drm: probe of 13050000.lcdc0 failed with error -22
This originates in a call to drm_bridge_connector_init from ingenic_drm_bind:
connector = drm_bridge_connector_init(drm, encoder);
The invoked function iterates over the registered bridges, one of which seems to be the HDMI peripheral (it has bridge operations defined identically to those specified in the Synopsys driver), but the type member of the drm_bridge structure is set to 0 (DRM_MODE_CONNECTOR_Unknown).
Although I had fancy ideas about finding the connector node in the device tree and populating the necessary type details on the bridge, I decided to just add the following to the Synopsys driver's dw_hdmi_probe function:
hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
This then lets the above invocation succeed and the Ingenic DRM driver initialises. However, I get "Input Not Supported" on my display.
Conveniently, when indicating the necessary boot arguments...
env set bootargs ... drm.debug=0x3f
...as suggested to me on a previous occasion, the /sys/kernel/debug/dri/0/ state file indicates the following:
plane[31]: plane-0 crtc=crtc-0 fb=36 allocated by = Xorg refcount=2 format=XR24 little-endian (0x34325258) modifier=0x0 size=1280x1024 layers: size[0]=1280x1024 pitch[0]=5120 offset[0]=0 obj[0]: name=0 refcount=3 start=00010000 size=5242880 imported=no paddr=0x00c00000 vaddr=3eb0c080 crtc-pos=1280x1024+0+0 src-pos=1280.000000x1024.000000+0.000000+0.000000 rotation=1 normalized-zpos=0 color-encoding=ITU-R BT.601 YCbCr color-range=YCbCr limited range plane[33]: plane-1 crtc=(null) fb=0 crtc-pos=0x0+0+0 src-pos=0.000000x0.000000+0.000000+0.000000 rotation=1 normalized-zpos=0 color-encoding=ITU-R BT.601 YCbCr color-range=YCbCr limited range crtc[32]: crtc-0 enable=1 active=1 self_refresh_active=0 planes_changed=0 mode_changed=0 active_changed=0 connectors_changed=0 color_mgmt_changed=0 plane_mask=1 connector_mask=1 encoder_mask=1 mode: "": 60 108000 1280 1328 1440 1688 1024 1025 1028 1066 0x0 0x5 connector[35]: HDMI-A-1 crtc=crtc-0 self_refresh_aware=0
I suspect that we may be dealing with an incompatible bus format again, but I may be quite wrong about that, too.
Here is the result of running modetest using...
sudo ./modetest -D /dev/dri/card0 -M ingenic-drm
Encoders: id crtc type possible crtcs possible clones 34 32 DPI 0x00000001 0x00000001
Connectors: id encoder status name size (mm) modes encoders 35 34 connected HDMI-A-1 340x270 17 34 modes: index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot) #0 1280x1024 60.02 1280 1328 1440 1688 1024 1025 1028 1066 108000 flags: phsync, pvsync; type: preferred, driver #1 1280x1024 75.02 1280 1296 1440 1688 1024 1025 1028 1066 135000 flags: phsync, pvsync; type: driver #2 1280x960 60.00 1280 1376 1488 1800 960 961 964 1000 108000 flags: phsync, pvsync; type: driver #3 1152x864 75.00 1152 1216 1344 1600 864 865 868 900 108000 flags: phsync, pvsync; type: driver #4 1024x768 75.03 1024 1040 1136 1312 768 769 772 800 78750 flags: phsync, pvsync; type: driver #5 1024x768 70.07 1024 1048 1184 1328 768 771 777 806 75000 flags: nhsync, nvsync; type: driver #6 1024x768 60.00 1024 1048 1184 1344 768 771 777 806 65000 flags: nhsync, nvsync; type: driver #7 832x624 74.55 832 864 928 1152 624 625 628 667 57284 flags: nhsync, nvsync; type: driver #8 800x600 75.00 800 816 896 1056 600 601 604 625 49500 flags: phsync, pvsync; type: driver #9 800x600 72.19 800 856 976 1040 600 637 643 666 50000 flags: phsync, pvsync; type: driver #10 800x600 60.32 800 840 968 1056 600 601 605 628 40000 flags: phsync, pvsync; type: driver #11 800x600 56.25 800 824 896 1024 600 601 603 625 36000 flags: phsync, pvsync; type: driver #12 640x480 75.00 640 656 720 840 480 481 484 500 31500 flags: nhsync, nvsync; type: driver #13 640x480 72.81 640 664 704 832 480 489 492 520 31500 flags: nhsync, nvsync; type: driver #14 640x480 66.67 640 704 768 864 480 483 486 525 30240 flags: nhsync, nvsync; type: driver #15 640x480 59.94 640 656 752 800 480 490 492 525 25175 flags: nhsync, nvsync; type: driver #16 720x400 70.08 720 738 846 900 400 412 414 449 28320 flags: nhsync, pvsync; type: driver props: 1 EDID: flags: immutable blob blobs:
value: 00ffffffffffff00047232ad01010101 2d0e010380221b782aaea5a6544c9926 145054bfef0081808140714f01010101 010101010101302a009851002a403070 1300520e1100001e000000ff00343435 3030353444454330300a000000fc0041 4c313731350a202020202020000000fd 00384c1e520e000a2020202020200051 2 DPMS: flags: enum enums: On=0 Standby=1 Suspend=2 Off=3 value: 3 5 link-status: flags: enum enums: Good=0 Bad=1 value: 0 6 non-desktop: flags: immutable range values: 0 1 value: 0 4 TILE: flags: immutable blob blobs:
value: 20 CRTC_ID: flags: object value: 32
CRTCs: id fb pos size 32 36 (0,0) (1280x1024) #0 60.02 1280 1328 1440 1688 1024 1025 1028 1066 108000 flags: phsync, pvsync; type: props: 22 ACTIVE: flags: range values: 0 1 value: 0 23 MODE_ID: flags: blob blobs:
value: e0a5010000053005a005980600000004 010404042a0400003c00000005000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000 19 OUT_FENCE_PTR: flags: range values: 0 18446744073709551615 value: 0 24 VRR_ENABLED: flags: range values: 0 1 value: 0 28 GAMMA_LUT: flags: blob blobs:
value: 29 GAMMA_LUT_SIZE: flags: immutable range values: 0 4294967295 value: 256
Planes: id crtc fb CRTC x,y x,y gamma size possible crtcs 31 32 36 0,0 0,0 0 0x00000001 formats: XR15 RG16 RG24 XR24 XR30 props: 8 type: flags: immutable enum enums: Overlay=0 Primary=1 Cursor=2 value: 1 17 FB_ID: flags: object value: 36 18 IN_FENCE_FD: flags: signed range values: -1 2147483647 value: -1 20 CRTC_ID: flags: object value: 32 13 CRTC_X: flags: signed range values: -2147483648 2147483647 value: 0 14 CRTC_Y: flags: signed range values: -2147483648 2147483647 value: 0 15 CRTC_W: flags: range values: 0 2147483647 value: 1280 16 CRTC_H: flags: range values: 0 2147483647 value: 1024 9 SRC_X: flags: range values: 0 4294967295 value: 0 10 SRC_Y: flags: range values: 0 4294967295 value: 0 11 SRC_W: flags: range values: 0 4294967295 value: 83886080 12 SRC_H: flags: range values: 0 4294967295 value: 67108864 33 0 0 0,0 0,0 0 0x00000001 formats: C8 XR15 RG16 RG24 XR24 XR30 props: 8 type: flags: immutable enum enums: Overlay=0 Primary=1 Cursor=2 value: 0 17 FB_ID: flags: object value: 0 18 IN_FENCE_FD: flags: signed range values: -1 2147483647 value: -1 20 CRTC_ID: flags: object value: 0 13 CRTC_X: flags: signed range values: -2147483648 2147483647 value: 0 14 CRTC_Y: flags: signed range values: -2147483648 2147483647 value: 0 15 CRTC_W: flags: range values: 0 2147483647 value: 0 16 CRTC_H: flags: range values: 0 2147483647 value: 0 9 SRC_X: flags: range values: 0 4294967295 value: 0 10 SRC_Y: flags: range values: 0 4294967295 value: 0 11 SRC_W: flags: range values: 0 4294967295 value: 0 12 SRC_H: flags: range values: 0 4294967295 value: 0
Frame buffers: id size pitch
Just in case that means anything to anyone.
Paul