Hold time control for NAND flash.

takayuki_ishii · ‎09-24-2019

Hello community,

I'm trying to configure GPMI NAND I/F timing for i.MX6Dual.

Current GPIM_TIMING0[DATA_HOLD]=3 and GPIM_TIMING0 register value is a 0x00010303.

But write cycle waveform output only 1cycle width.

Other bit value, GPIM_TIMING0[ADDRESS_SETUP] and GPIM_TIMING0[DATA_SETUP], seems correctly.

Do you have some checkpoint to solve this problem?

Best regards,

Ishii.

takayuki_ishii · ‎10-07-2019

Thank you for your reply and sorry my late reply.

This problem occurs by u-boot setting.

NAND device is a Macronix MX30LF4G18AC .

Best regards,

Ishii.

jamesbone · ‎09-30-2019

Hello,

Are you doing the setup for Uboot? or directly in the DTS,? which NAND memory you are trying to use?

You can check

Linux Guide in Linux Documentation