On 22/08/2012 21:25, Matt Sealey wrote:
Efika MX boards configure their DDR pad settings twice, one in the DCD generated from imximage_*.cfg and again in init_drive_strength called before relocation.
Rather than doing this, roll the changes it makes into the DCD so DDR is set up before a single line of code in U-Boot is run.
The settings are identical with this DCD block which is shorter (by 7 entries) than the old one, and after the output of init_drive_strength since a lot of the functionality in the existing DCD and init_drive_strength function was just setting the POR defaults. This goes to explain some now-missing entries.
Several hundred rounds of mtest have been run to test the settings before and after to confirm DDR is stable and no ill-effects have been found.
Signed-off-by: Matt Sealey matt@genesi-usa.com
board/genesi/mx51_efikamx/efikamx.c | 77 ----------------------------- board/genesi/mx51_efikamx/imximage_mx.cfg | 42 +++++++--------- 2 files changed, 18 insertions(+), 101 deletions(-)
Applied to u-boot-imx, thanks.
Best regards, Stefano Babic