[PATCH 20/20] imx8ulp: ddr: Fix DDR frequency request issue

[sbabic at denx.de]

> From: Ye Li <ye.li at nxp.com>
> After acking the requested frequency, should wait the ack bit clear
> by DDR controller and check the DFS interrupt for next request polling.
> Otherwise, the next polling of request bit will get previous value
> that DDR controller have not cleared it, so a wrong request frequency
> is used.
> Reviewed-by: Peng Fan <peng.fan at nxp.com>
> Signed-off-by: Ye Li <ye.li at nxp.com>
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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