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. :-(
