Hi Marek,
On 5/15/24 10:59, Marek Behún wrote:
On Mon, 6 May 2024 12:03:55 +0200
Stefan Roese <s...@denx.de> wrote:
Hi Marek,
On 4/15/24 18:30, Marek Behún wrote:
Support old DDR3 training code on Turris Omnia, selectable by U-Boot
enviroment variable.
Users experiencing DDR3 initialization failures or random crashes of the
operating system due to incorrect DDR3 configuration can select the old
DDR3 training implementation to fix those issues by setting the
environment variable
env set omnia_ddr3_training old
env save
Signed-off-by: Marek Behún <ka...@kernel.org>
---
arch/arm/mach-mvebu/Kconfig | 1 +
board/CZ.NIC/turris_omnia/Makefile | 1 +
board/CZ.NIC/turris_omnia/old_ddr3_training.c | 79 +++++++++++++++++++
board/CZ.NIC/turris_omnia/turris_omnia.c | 2 +-
4 files changed, 82 insertions(+), 1 deletion(-)
create mode 100644 board/CZ.NIC/turris_omnia/old_ddr3_training.c
For turris_omnia_defconfig, this is dropped when compiled:
drivers/ddr/marvell/a38x/old/ddr3_debug.c:776:12: warning:
'ddr3_tip_access_atr' declared 'static' but never defined
[-Wunused-function]
776 | static int ddr3_tip_access_atr(u32 dev_num, u32 flag_id, u32
value, u32 **ptr);
| ^~~~~~~~~~~~~~~~~~~
And it also seems that there is still something wrong with this
old DDR training code port. Some boards still experience random bugs
with this, but not with the U-Boot from 2015. :-(
Hmmm, strange.
How to continue? Are these "old DDR training patches" on hold for now?
Thanks,
Stefan
