Debian on HP Thin Client T5335z
Posted by bodhi
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Re: Debian on HP Thin Client T5335z March 03, 2021 09:21PM |
Admin Registered: 13 years ago Posts: 18,997 |
[ 4.245546][ T1] dove-pinctrl f10d0200.pin-ctrl: falling back to hardcoded PMU resource [ 4.254002][ T1] dove-pinctrl f10d0200.pin-ctrl: [Firmware Bug]: Missing pinctrl regs in DTB. Please update your firmware. [ 4.268713][ T1] dove-pinctrl f10d0200.pin-ctrl: registered pinctrl driver
Looks like I need to do some more in the DTS get this fixed first. Also the DTS LCD node will need to be beefed up a bit more.
-bodhi
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Gyan
Re: Debian on HP Thin Client T5335z March 05, 2021 08:42AM |
Hi bodhi,
Here the lsmod output:
- Gyan
Here the lsmod output:
Module Size Used by armada 45056 0 drm_kms_helper 151552 1 armada snd_soc_simple_card 16384 0 drm 339968 2 armada,drm_kms_helper snd_soc_simple_card_utils 16384 1 snd_soc_simple_card drm_panel_orientation_quirks 16384 1 drm snd_soc_kirkwood 16384 0 fb_sys_fops 16384 1 drm_kms_helper syscopyarea 16384 1 drm_kms_helper sysfillrect 16384 1 drm_kms_helper sysimgblt 16384 1 drm_kms_helper cfbfillrect 16384 1 drm_kms_helper cfbimgblt 16384 1 drm_kms_helper cfbcopyarea 16384 1 drm_kms_helper snd_soc_core 180224 3 snd_soc_kirkwood,snd_soc_simple_card_utils,snd_soc_simple_card ac97_bus 16384 1 snd_soc_core snd_pcm_dmaengine 16384 1 snd_soc_core snd_pcm 81920 3 snd_soc_kirkwood,snd_pcm_dmaengine,snd_soc_core snd_timer 28672 1 snd_pcm snd 53248 3 snd_timer,snd_soc_core,snd_pcm soundcore 16384 1 snd sg 32768 0 uio_pdrv_genirq 16384 0 uio 20480 1 uio_pdrv_genirq ext2 69632 1 sdhci_dove 16384 0 sdhci_pltfm 16384 1 sdhci_dove sdhci 49152 2 sdhci_dove,sdhci_pltfm mmc_core 118784 2 sdhci_dove,sdhci i2c_mux_pinctrl 16384 0 uas 20480 0
- Gyan
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Re: Debian on HP Thin Client T5335z March 05, 2021 09:07AM |
Registered: 4 years ago Posts: 7 |
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Gyan
Re: Debian on HP Thin Client T5335z March 05, 2021 11:32AM |
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Re: Debian on HP Thin Client T5335z March 05, 2021 05:31PM |
Admin Registered: 13 years ago Posts: 18,997 |
Gyan,
Looks like the DRM modules were loaded properly.
> Do you know how I can extract the DTS from the
> stock kernel image? I don't seem to be finding
> much on Google.
> Could it be useful for debugging the LCD part of
> your DTS?
Stock kernel is quite old (pre-FDT) so it does not have DTS.
I'll upload a DTB for you to test soon (today or tomorrow).
-bodhi
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Looks like the DRM modules were loaded properly.
drm_kms_helper 151552 1 armada snd_soc_simple_card 16384 0 drm 339968 2 armada,drm_kms_helper snd_soc_simple_card_utils 16384 1 snd_soc_simple_card drm_panel_orientation_quirks 16384 1 drm snd_soc_kirkwood 16384 0 fb_sys_fops 16384 1 drm_kms_helper syscopyarea 16384 1 drm_kms_helper sysfillrect 16384 1 drm_kms_helper sysimgblt 16384 1 drm_kms_helper cfbfillrect 16384 1 drm_kms_helper cfbimgblt 16384 1 drm_kms_helper cfbcopyarea 16384 1 drm_kms_helper
> Do you know how I can extract the DTS from the
> stock kernel image? I don't seem to be finding
> much on Google.
> Could it be useful for debugging the LCD part of
> your DTS?
Stock kernel is quite old (pre-FDT) so it does not have DTS.
I'll upload a DTB for you to test soon (today or tomorrow).
-bodhi
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Re: Debian on HP Thin Client T5335z March 07, 2021 05:11PM |
Admin Registered: 13 years ago Posts: 18,997 |
Hi Gyan,
Here is the new DTB (I also attached the DTS).
Recreate uImage with this new DTB.
WIth the monitor plugged in and power on, reboot (or power up) the T5335z. Observe any behavior on the monitor screen during boot (even a flickering would be interesting). Let it boot all the way in to Debian.
Log in and
And post the entire serial console log here.
This is a work-in-progress ( more needed to be done).
-bodhi
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Here is the new DTB (I also attached the DTS).
Recreate uImage with this new DTB.
WIth the monitor plugged in and power on, reboot (or power up) the T5335z. Observe any behavior on the monitor screen during boot (even a flickering would be interesting). Let it boot all the way in to Debian.
Log in and
lsmod
And post the entire serial console log here.
This is a work-in-progress ( more needed to be done).
-bodhi
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Re: Debian on HP Thin Client T5335z March 08, 2021 02:28AM |
Registered: 3 years ago Posts: 8 |
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Re: Debian on HP Thin Client T5335z March 08, 2021 04:15AM |
Admin Registered: 13 years ago Posts: 18,997 |
Gyan,
Looks like the kernel did not even detect there is a monitor! I know the DTS is not complete, but hoping to see some activity.
The GPL source has this LCD enable defined at GPIO 11. Perhaps 11 is not really the LCD Power GPIO. There is another one for LCD, we'll try that tomorrow.
-bodhi
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Looks like the kernel did not even detect there is a monitor! I know the DTS is not complete, but hoping to see some activity.
The GPL source has this LCD enable defined at GPIO 11. Perhaps 11 is not really the LCD Power GPIO. There is another one for LCD, we'll try that tomorrow.
-bodhi
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Re: Debian on HP Thin Client T5335z March 11, 2021 03:11AM |
Registered: 3 years ago Posts: 8 |
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Re: Debian on HP Thin Client T5335z March 11, 2021 10:19PM |
Admin Registered: 13 years ago Posts: 18,997 |
Gyan,
> Out of curiosity, what is this GPL source?
GPL source is abbreviate for GPL V2 license source code. Any manufacturer who use the Linux kernel as a base, and patch that source tree to run their hardware, has to provide the complete source code, or patches that clearly states which LInux kernel version the patches are for. This can be either on a public website, or available upon request for a customer who bought the box. Some manufacturers wait for a while before publishing on their website. But they are legally obligated to provide it when requested.
The process of hacking a box to build latest kernel always starts with the GPL soure, where you can find the patches.
-bodhi
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> Out of curiosity, what is this GPL source?
GPL source is abbreviate for GPL V2 license source code. Any manufacturer who use the Linux kernel as a base, and patch that source tree to run their hardware, has to provide the complete source code, or patches that clearly states which LInux kernel version the patches are for. This can be either on a public website, or available upon request for a customer who bought the box. Some manufacturers wait for a while before publishing on their website. But they are legally obligated to provide it when requested.
The process of hacking a box to build latest kernel always starts with the GPL soure, where you can find the patches.
-bodhi
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Re: Debian on HP Thin Client T5335z March 11, 2021 11:10PM |
Admin Registered: 13 years ago Posts: 18,997 |
Now, when a manufacturer failed to provide GPL source, anybody (not just one who bought the hardware) can raise the issue and threaten to sue the manufacturer.
One of the worse offenders that I came across is GTI (Global Technologies Inc) who made the Dreamplug, Sheevaplug, Mirabox, and a few other small board computers. I still don't have the correct GPL source for the Mirabox v5, and cannot find them.
HP (the manufacturer for this box and the T5325), and a few other NAS vendors such as Synology, are quite good in GPL compliance. We can see the patches sources clearly separated from the mainline kernel source. They are obligated only to provide the Linux patched source tree (which would make it a little more difficult to find the deltas). Most NAS boxes manufacturers provide the patched Linux source tree.
-bodhi
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One of the worse offenders that I came across is GTI (Global Technologies Inc) who made the Dreamplug, Sheevaplug, Mirabox, and a few other small board computers. I still don't have the correct GPL source for the Mirabox v5, and cannot find them.
HP (the manufacturer for this box and the T5325), and a few other NAS vendors such as Synology, are quite good in GPL compliance. We can see the patches sources clearly separated from the mainline kernel source. They are obligated only to provide the Linux patched source tree (which would make it a little more difficult to find the deltas). Most NAS boxes manufacturers provide the patched Linux source tree.
-bodhi
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Re: Debian on HP Thin Client T5335z March 12, 2021 04:57AM |
Registered: 3 years ago Posts: 8 |
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Re: Debian on HP Thin Client T5335z March 12, 2021 04:53PM |
Admin Registered: 13 years ago Posts: 18,997 |
Gyan,
Not sure where I kept the link. You can find it in this thread, or the T5325 thread:
https://forum.doozan.com/read.php?2,25473
-bodhi
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Not sure where I kept the link. You can find it in this thread, or the T5325 thread:
https://forum.doozan.com/read.php?2,25473
-bodhi
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Re: Debian on HP Thin Client T5335z March 12, 2021 07:07PM |
Admin Registered: 13 years ago Posts: 18,997 |
Here is another version for the DTB. Please try the same test as before.
-bodhi
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-bodhi
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Re: Debian on HP Thin Client T5335z March 12, 2021 09:06PM |
Admin Registered: 13 years ago Posts: 18,997 |
bodhi Wrote:
-------------------------------------------------------
> Here is another version for the DTB. Please try
> the same test as before.
FYI. This is probably not the right change to get the LCD started.
-bodhi
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-------------------------------------------------------
> Here is another version for the DTB. Please try
> the same test as before.
FYI. This is probably not the right change to get the LCD started.
-bodhi
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Re: Debian on HP Thin Client T5335z March 13, 2021 03:09PM |
Registered: 3 years ago Posts: 8 |
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Re: Debian on HP Thin Client T5335z March 13, 2021 04:14PM |
Admin Registered: 13 years ago Posts: 18,997 |
Gyan,
Thanks! I was just making a wild guess on that GPIO 18. So back to GPIO 11 for LCD power.
-bodhi
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Thanks! I was just making a wild guess on that GPIO 18. So back to GPIO 11 for LCD power.
-bodhi
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Re: Debian on HP Thin Client T5335z March 14, 2021 06:51AM |
Registered: 3 years ago Posts: 8 |
bodhi,
I have found googling the datasheet of the 88AP510, which should be the ARMADA 500 SoC this box mounts.
In the DS, there is an embedded spreadsheet with the Multi Purpose Pins descriptions (mpp) - attaching to this message the excel.
In this file, MPP 11 does not seem usable for LCD.
Hope this can help.
Datasheet source: https://www.datasheets360.com/pdf/-5345332529946537264
- Gyan
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moderator edit: removed the attachment
Edited 2 time(s). Last edit at 03/14/2021 05:10PM by bodhi.
I have found googling the datasheet of the 88AP510, which should be the ARMADA 500 SoC this box mounts.
In the DS, there is an embedded spreadsheet with the Multi Purpose Pins descriptions (mpp) - attaching to this message the excel.
In this file, MPP 11 does not seem usable for LCD.
Hope this can help.
Datasheet source: https://www.datasheets360.com/pdf/-5345332529946537264
- Gyan
======
moderator edit: removed the attachment
Edited 2 time(s). Last edit at 03/14/2021 05:10PM by bodhi.
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Re: Debian on HP Thin Client T5335z March 14, 2021 05:09PM |
Admin Registered: 13 years ago Posts: 18,997 |
Thanks Gyan,
I've removed the spreadsheet so we don't get into potential problem. Afaik, Marvell has not released the datasheet to the public.
-bodhi
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I've removed the spreadsheet so we don't get into potential problem. Afaik, Marvell has not released the datasheet to the public.
-bodhi
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Re: Debian on HP Thin Client T5335z March 14, 2021 05:51PM |
Admin Registered: 13 years ago Posts: 18,997 |
Gyan,
Found the GPL links, I've edited the 1st post to include them.
https://forum.doozan.com/read.php?2,66989,66989#msg-66989
What I'm looking for is the LCD clock settings, found some instances of that in the patches. But I'm not sure exactly what to use yet.
Regarding GPIO 11. The datasheet usally show all possible ways that an MPP can be configured. So GPIO info in datasheet are useful, but not exactly as a box really connected to (i.e. MPP is pin mutilplexer). The specifics can be found in GPL source.
====
It looks as though stock uses lcd1, not lcd0.
-bodhi
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Edited 1 time(s). Last edit at 03/15/2021 12:56AM by bodhi.
Found the GPL links, I've edited the 1st post to include them.
https://forum.doozan.com/read.php?2,66989,66989#msg-66989
What I'm looking for is the LCD clock settings, found some instances of that in the patches. But I'm not sure exactly what to use yet.
Regarding GPIO 11. The datasheet usally show all possible ways that an MPP can be configured. So GPIO info in datasheet are useful, but not exactly as a box really connected to (i.e. MPP is pin mutilplexer). The specifics can be found in GPL source.
====
It looks as though stock uses lcd1, not lcd0.
-bodhi
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Edited 1 time(s). Last edit at 03/15/2021 12:56AM by bodhi.
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Re: Debian on HP Thin Client T5335z March 14, 2021 05:54PM |
Admin Registered: 13 years ago Posts: 18,997 |
Koen & others,
Please chime in if you are interested. Perhaps helping look into the GPL patches.
-bodhi
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Please chime in if you are interested. Perhaps helping look into the GPL patches.
-bodhi
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Re: Debian on HP Thin Client T5335z March 15, 2021 08:39AM |
Registered: 3 years ago Posts: 8 |
Yes, I see from the source that apparently MPP11 is used to power up the LCD, configured as GPIO.
There is also a reference to MPP13 for the LCD backlight - not sure if we should set that as well in the DTS.
I am not clear where DTS configurations should stop and the video driver's job begins. In the stock source I also see references to the SoC register map for video settings, but maybe that is taken care of by the armada video driver?
Thanks,
- Gyan
There is also a reference to MPP13 for the LCD backlight - not sure if we should set that as well in the DTS.
I am not clear where DTS configurations should stop and the video driver's job begins. In the stock source I also see references to the SoC register map for video settings, but maybe that is taken care of by the armada video driver?
Thanks,
- Gyan
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Re: Debian on HP Thin Client T5335z March 15, 2021 12:13PM |
Registered: 3 years ago Posts: 8 |
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Re: Debian on HP Thin Client T5335z March 15, 2021 03:58PM |
Registered: 10 years ago Posts: 226 |
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Re: Debian on HP Thin Client T5335z March 15, 2021 05:26PM |
Admin Registered: 13 years ago Posts: 18,997 |
I believe all video related settings have been taken care off in the DTS, except for the LCD clock. And in the latest kernel, Dove DRM has been fully implemented.
-bodhi
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Re: Debian on HP Thin Client T5335z March 17, 2021 11:16AM |
Registered: 3 years ago Posts: 8 |
How can we find out which resources are missing in the DTB? For example the PMU registers pinctrl is complaining about.
I see in pinctrl-dove.c file of the kernel source, we are missing this resource (I found out with the error message we get at startup):
memory resources 0 and 1 are fine, it seems.
A memory resource of some kind (PMU regmap portion I guess) is missing in the DTS, but how can it be described?
- Gyan
I see in pinctrl-dove.c file of the kernel source, we are missing this resource (I found out with the error message we get at startup):
res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
memory resources 0 and 1 are fine, it seems.
A memory resource of some kind (PMU regmap portion I guess) is missing in the DTS, but how can it be described?
- Gyan
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Re: Debian on HP Thin Client T5335z August 09, 2021 04:07PM |
Admin Registered: 13 years ago Posts: 18,997 |
That PMU register pinctrl is not a problem. It just fall back to hardcoded numbers for Dove when the new binding in the DTS is missing. I don't think those will be removed any time soon (not a lot of Dove SoCs activities for many years).
I spent sometime reading the GPL sources to find the LCD clock. It is the IDT5V49EE503 programmable clock generator. Stock has a driver for this. The bad news is I could not find this driver in mainline Linux! So it might be an issue that will take a bit of time to resolve. The driver code is so old that might take significant efforts to port it to the latest kernel (I have not looked closely, though).
So for now, this box remains headless, unless we can find a version of this driver has been ported somewhere.
-bodhi
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I spent sometime reading the GPL sources to find the LCD clock. It is the IDT5V49EE503 programmable clock generator. Stock has a driver for this. The bad news is I could not find this driver in mainline Linux! So it might be an issue that will take a bit of time to resolve. The driver code is so old that might take significant efforts to port it to the latest kernel (I have not looked closely, though).
So for now, this box remains headless, unless we can find a version of this driver has been ported somewhere.
-bodhi
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Re: Debian on HP Thin Client T5335z November 25, 2021 12:47PM |
Registered: 3 years ago Posts: 28 |
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Re: Debian on HP Thin Client T5335z November 26, 2021 12:54PM |
Admin Registered: 13 years ago Posts: 18,997 |
wildhem,
> Could someone send me a spi memory dump from this
> terminal? I would like to try to boot my wyse t10
> with a bootloader from this hp.
Let me see if I can. You only need a u-boot dump to boot into Debian.
-bodhi
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> Could someone send me a spi memory dump from this
> terminal? I would like to try to boot my wyse t10
> with a bootloader from this hp.
Let me see if I can. You only need a u-boot dump to boot into Debian.
-bodhi
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Re: Debian on HP Thin Client T5335z November 27, 2021 03:38PM |
Admin Registered: 13 years ago Posts: 18,997 |
Here is the u-boot dump for HP T5335z.
mtd0 is u-boot, mtd1 is u-boot envs.
The MTDs should look like this:
# cat /proc/mtd
If flashing these mtds to the Wyse T10/T50, make sure the SPI flash is the same or similar (i.e. 1M), and the output of cat /proc/mtd shows same mtd0 and mtd1 location & size.
dmesg:
Warning: There is no guarantee whatsoever if these u-boot images will work on the Wyse T10/T50. These are dumps from my currently running HP T5335z. The HP T5335z does not have UART booting at the moment, so even flashing to the HP T5335z has some risk (the safest way to install on HP T5335z is shown at the end of this post). Please proceed it at your own risk.
Flash mtd0 and mtd1 (flash_unlock might not do anything or if gives out error, ignore it).
After flashing these 2 images, see HP T5335z installation to boot Debian on USB.
https://forum.doozan.com/read.php?2,66989,116839#msg-116839
-bodhi
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mtd0 is u-boot, mtd1 is u-boot envs.
The MTDs should look like this:
# cat /proc/mtd
dev: size erasesize name mtd0: 000c0000 00001000 "u-boot" mtd1: 00002000 00001000 "uboot_env" mtd2: 00002000 00001000 "pu_env" mtd3: 00002000 00001000 "hp_env"
If flashing these mtds to the Wyse T10/T50, make sure the SPI flash is the same or similar (i.e. 1M), and the output of cat /proc/mtd shows same mtd0 and mtd1 location & size.
dmesg:
[ 5.018443] spi-nor spi0.0: sst25vf080b (1024 Kbytes)
Warning: There is no guarantee whatsoever if these u-boot images will work on the Wyse T10/T50. These are dumps from my currently running HP T5335z. The HP T5335z does not have UART booting at the moment, so even flashing to the HP T5335z has some risk (the safest way to install on HP T5335z is shown at the end of this post). Please proceed it at your own risk.
Flash mtd0 and mtd1 (flash_unlock might not do anything or if gives out error, ignore it).
flash_unlock /dev/mtd0 flashcp -v mtd0.t5335z /dev/mtd0 flash_unlock /dev/mtd1 flashcp -v mtd1.t5335z /dev/mtd1
After flashing these 2 images, see HP T5335z installation to boot Debian on USB.
https://forum.doozan.com/read.php?2,66989,116839#msg-116839
-bodhi
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