17 Oct
2019
17 Oct
'19
3:42 p.m.
Hi Marek,
On Tue, Oct 15, 2019 at 1:27 PM Marek Vasut marex@denx.de wrote:
According to IMX28CEC rev. 4, 10/2018, Table 15. Recommended Operating Conditions, page 16, the VDDD should be set to 1.55V when the CPU is operating at 454MHz. This is the case in U-Boot, hence increase the VDDD voltage. This fixes instability when performing TFTP transfers. Increase the brownout threshold to 1.4V. The documentation recommends 1.45V setting for the brownout, however, this triggers failure during power block init, so keep the brownout slightly lower.
Signed-off-by: Marek Vasut marex@denx.de Cc: Stefano Babic sbabic@denx.de
Looks good, thanks:
Reviewed-by: Fabio Estevam festevam@gmail.com