[PATCH 2/2] imx: Support i.MX91 11x11 FRDM board

[Peng Fan]

Hi Fabio,

> Subject: Re: [PATCH 2/2] imx: Support i.MX91 11x11 FRDM board
> 
> On Mon, Dec 1, 2025 at 11:29 PM Joseph Guo <qijian.guo at nxp.com>
> wrote:
> 
> > ECC is to detect and correct errors in data of the ddr.
> > It is needed. I will add a common include to reduce duplicate code.
> 
> Ok, but why can't we have a single
> configs/imx91_11x11_frdm_defconfig
> with ECC enabled?
> 
> If the DDR controller supports ECC, why can't it be enabled by default?
> 
> I want to understand why we need both defconfigs instead of just one.

With ECC enabled, some DRAM space needs to be reserved to store ECC.
With ECC disabled, no need to reserve DRAM space for ECC area.

Regards
Peng.