Hi, finally I am back in office and tried to make it working.
But I can't boot with this setup. RAM is "not working" which indicates subtle parameter variations.
U-Boot SPL 2016.11-00248-g0249324 (Aug 28 2017 - 15:11:23) OMAP5432-GP ES2.0 SDRAM: identified size not same as expected size identified: 0 expected: 40000000
spl:board_init_r()
spl_init() Trying to boot from MMC1 WARNING: DDR RAM is not working! (12000000) Found LC15 V5.1 board_mmc_init called (vers = 51) MLO hard: gpio7 = eMMC soft: gpio82 = 0 (mmc1=eMMC) ctrl: gpio76 = 1 (ctrl=soft)
Should I try a different patch set?
src hns$ git log --oneline -5 0249324736 Pyra/LC15: Configure interleaving for 4GB DDR3 3ec0ad03d8 Pyra/LC15: Proof of concept ddr3 max timings for 1.35V c8fb1e629c U-Boot: OMAP: fix variables names in default boot environment <- http://git.goldelico.com/?p=gta04-uboot.git;a=commit;h=c8fb1e629c77d3da954d6... e16ab8dd10 Letux boot-scr: add boot.scr source for Udoo Neo 2e5153378d Letux: add boot.scr source for udoo neo src hns$
BR, Nikolaus
Am 18.08.2017 um 06:43 schrieb Tony Lindgren tony@atomide.com:
Hi,
So I found some hacked up settings that allow booting 4GB pyra at 1.35V. I just set the timings to max to see what would happen and then that worked with the termination set to zero. Obviously not the correct timings though.. But hey at least proves that this memory can work at 1.35V pretty much :)
Regards,
Tony
Tony Lindgren (2): Pyra/LC15: Proof of concept ddr3 max timings for 1.35V Pyra/LC15: Configure interleaving for 4GB DDR3
arch/arm/cpu/armv7/omap-common/emif-common.c | 5 +++++ arch/arm/include/asm/emif.h | 1 + board/goldelico/letux-cortex15/lc15.c | 33 +++++++++++++++++++++------- 3 files changed, 31 insertions(+), 8 deletions(-)
-- 2.14.1