debian testing: 2017-01-03 (U-Boot Cape Manager edition)

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1

Howdy!

So here we go, an Image with U-Boot Cape Manager installed.

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#2017-01-03

U-Boot version:

U-Boot SPL 2017.01-rc3-00003-gd2796a1cca (Jan 03 2017 - 12:44:32)
Trying to boot from MMC1

U-Boot 2017.01-rc3-00003-gd2796a1cca (Jan 03 2017 - 12:44:32 -0600),
Build: jenkins-github_Bootloader-Builder-498

U-Boot will read the i2c eeprom on each of the 4 possible capes:

BeagleBone: cape eeprom: i2c_probe: 0x54:
BeagleBone: cape eeprom: i2c_probe: 0x55:
/lib/firmware/BB-CAPE-DISP-CT4-00A0.dtbo
BeagleBone: cape eeprom: i2c_probe: 0x56:
BeagleBone: cape eeprom: i2c_probe: 0x57:

It's of course disabled by default, to enable it open /boot/uEnv.txt

###EXPERIMENTAL###
#enable_uboot_overlays=1
#dtb_overlay=/lib/firmware/BB-UART2-00A0.dtbo
###EXPERIMENTAL###

and un-comment enable_uboot_overlays=1

###EXPERIMENTAL###
enable_uboot_overlays=1
#dtb_overlay=/lib/firmware/BB-UART2-00A0.dtbo
###EXPERIMENTAL###

loading /boot/dtbs/4.4.39-ti-r79/am335x-boneblack-emmc-overlay.dtb ...
53192 bytes read in 110 ms (471.7 KiB/s)
debug: [uboot_overlay_addr1=/lib/firmware/BB-CAPE-DISP-CT4-00A0.dtbo] ...
loading /lib/firmware/BB-CAPE-DISP-CT4-00A0.dtbo ...
4518 bytes read in 265 ms (16.6 KiB/s)
loading /boot/initrd.img-4.4.39-ti-r79 ...
5163687 bytes read in 374 ms (13.2 MiB/s)
debug: [console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1
root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M
net.ifnames=0 quiet cape_universal=enable] ...
debug: [bootz 0x82000000 0x88080000:4ecaa7 88000000] ...
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
   reserving fdt memory region: addr=88000000 size=e000
   Loading Ramdisk to 8fb13000, end 8ffffaa7 ... OK
   Loading Device Tree to 8fb02000, end 8fb12fff ... OK

Starting kernel ...

If you'd like to enable a 5th cape, or one without an i2c eeprom, use
the dtb_overlay variable, for example to load BB-UART2-00A0.dtb

dtb_overlay=/lib/firmware/BB-UART2-00A0.dtbo

ToDo:

Split out eMMC, hdmi-video, hdmi-audio, ethernet, wl18xx, add a pin
manager so we know what to load..

Fix the /uEnv.txt to have backwards compatbilty... (for right now, you
have to [sudo rm /uEnv.txt])

Regards,

2

We should be able to now, it'll need a v4.4.x-ti or v4.9.x+ kernel, see:

BB-HDMI-TDA998x-00A0.dts

https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-HDMI-TDA998x-00A0.dts

When loaded via u-boot, video came up at work. (no hdmi-audio devices at work)

You must be working on the it66121 cape?

Please create two overlays..

BB-HDMI-IT66121-00A0.dts (video & audio)
BB-NHDMI-IT66121-00A0.dts (no audio)

that board had an eeprom on it right? (i have one at my desk at work)..

Regards,

3

Yay!!! that original it66121 driver we had for 3.8.x just looked way
to yucky... I'm glad you got it working on later kernel's!

Regards,

4

can we put clk_mcasp0 to cape dts now ?
https://github.com/RobertCNelson/dtb-rebuilder/blob/4.1-ti/src/arm/am335x-boneblack-audio.dts#L17-L28

在 2017年1月5日星期四 UTC+8上午12:55:29，robert nelson写道：

5

Yes, you can see

root@beaglebone:/sys# cat ./devices/platform/bone_capemgr/slots
0: P—L- 0 Beaglebone green hdmi cape,00A0,Seeed,BB-GREEN-HDMI
1: PF---- -1
2: PF---- -1
3: PF---- -1

This dirver will be pull soon. display is fine. auido has a bit noise.

在 2017年1月5日星期四 UTC+8上午9:44:29，robert nelson写道：