Activity

From 02/14/2018 to 03/15/2018

JC 05:46 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Linux Boot Parameter and NAND Partition: Okan Çalış wrote:
> I know I can do that. _(You suggested doing so when we realized, the kernel on the custom board listed the MTD partitions differently than configured in U-Boot. It's the same problem, but still, MityDsp can boot to L... Jonathan Cormier
OÇ 01:31 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Linux Boot Parameter and NAND Partition: Also, when I issue a "@cat /proc/mtd@" with NFS, it prints only the SPI partitions starting from @mtd0@; it doesn't print @rootfs@ and @homefs@. Okan Çalış
OÇ 08:16 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Linux Boot Parameter and NAND Partition: I know I can do that. _(You suggested doing so when we realized, the kernel on the custom board listed the MTD partitions differently than configured in U-Boot. It's the same problem, but still, MityDsp can boot to Linux, while the custo... Okan Çalış

JC 02:00 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Linux Boot Parameter and NAND Partition: You can manually update the nand partition tables by changing the file arch/arm/mach-davinci/board-mityomapl138.c and look for @mityomapl138_nandflash_partition@. Jonathan Cormier
OÇ 05:20 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Linux Boot Parameter and NAND Partition: > Where did you print out this partition table?
From the @mtdparts@ command of the U-Boot. It is also consistent with environment variable of the same name.
> ...
As you suspected, the MTD partitions listed by Linux don't match tho... Okan Çalış

JC 02:41 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Linux Boot Parameter and NAND Partition: Okan Çalış wrote:
> Hi,
> ...
Where did you print out this partition table?
> @device nand0 <nand>, # parts = 3
> ...
Yes I agree with you. Given that parition table, I would expect you to have to use mtdblock1.
Can you run @cat... Jonathan Cormier
OÇ 12:49 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: Linux Boot Parameter and NAND Partition: Hi,
I have a general question about Linux on MityDsp, which might help me solve "the problem I consulted you about before.":https://support.criticallink.com/redmine/boards/10/topics/5615
On my MityDsp, the NAND flash is partitioned... Okan Çalış

MJ 01:24 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: MitySOM-5CSX ethernet PHY errors prevent ethernet in Linux: Hi
Thanks for that information - that was it!
U-Boot 'mii dump' command reports that the Dev Kit has a PHY ID of 3 but our board has a PHY ID of 2.
BUT ... it looks like the Dev Kit was designed for the PHY ID to be 2 but turned out... Mathew Jones

DV 04:21 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: MitySOM-5CSX ethernet PHY errors prevent ethernet in Linux: Seeing as u-boot works correctly and linux doesn't I believe this has to do with the PHY ID. u-boot will just probe all possible IDs on the MDIO interface until it finds one but unluckily linux requires you to specify it in the device tr... Daniel Vincelette
MJ 03:58 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: MitySOM-5CSX ethernet PHY errors prevent ethernet in Linux: The device is the Microchip/Micrel KSZ9031RNX, which I believe is the same as the Dev Kit.
The MDIO pins are connected like the Dev Kit except that as recommended by Microchip there is a 1K MDIO pullup instead of 10K as on the Dev Kit.
... Mathew Jones

MW 06:21 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: MitySOM-5CSX ethernet PHY errors prevent ethernet in Linux: Sounds like reset is working properly.
Are the MDIO pins connected the same way as for the Dev Kit?
Have you updated the preloader for your FPGA build? Michael Williamson
MJ 03:56 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: MitySOM-5CSX ethernet PHY errors prevent ethernet in Linux: Hi Mike
I believe the PHY is the same as the dev board, but I'll need to confirm that.
The activity LED for the PHY flashes during U-Boot start-up and then once for every ping out from U-Boot.
During Linux start-up I think I see the... Mathew Jones

MW 12:31 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: MitySOM-5CSX ethernet PHY errors prevent ethernet in Linux: What PHY are you using?
This sounds a lot like the PHY is maybe getting held in reset. Do you have a GPIO connected to the PHY reset pin? Can you scope that pin?
When linux boots, if you connect a network connection to the port, ... Michael Williamson
MJ 09:38 AM MitySOM-5CSX Altera Cyclone V Software Development: MitySOM-5CSX ethernet PHY errors prevent ethernet in Linux: Hi,
We have a PCB based on the development kit, where we are using a MitySOM-5CSX-H6-4YA and boot from SD Card.
At start-up we get PHY errors under Linux that continually get output to the console and prevent the Ethernet port being us... Mathew Jones

JC 03:12 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Kernel panics on custom board: "No init found. Try passing init= option to kernel": Okan Çalış wrote:
> Hi Jonathan, thanks for your reply.
> ...
I suggest you do some research into nand and ECC. This might be a good starting place.
http://www.linux-mtd.infradead.org/doc/nand.html
>
> ...
We are not familiar with... Jonathan Cormier
OÇ 12:07 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Kernel panics on custom board: "No init found. Try passing init= option to kernel": Hi Jonathan, thanks for your reply.
> The kernel and u-boot both have to use the same ECC strength.
I'm afraid I have no idea what an ECC strength is. I've read "this documentation,":https://www.kernel.org/doc/Documentation/devicet... Okan Çalış

JC 02:14 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Kernel panics on custom board: "No init found. Try passing init= option to kernel": Okan Çalış wrote:
> Hi,
> ...
The kernel and u-boot both have to use the same ECC strength. You can possibly use our kernel if you can figure out how to configure the nand correctly but I don't think we can be of much help here.
>
... Jonathan Cormier
OÇ 07:38 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Kernel panics on custom board: "No init found. Try passing init= option to kernel": Hi,
I couldn't reply sooner because I've been handling some other kernel-related problems by using NFS as a temporary solution.
The custom board is rather similar to Critical Link's MityDsp-L138F in terms of included peripherals et... Okan Çalış

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