[PATCH 2/3] nand: add NXP IFC nand driver

[Barbier, Renaud]

I first ported this driver in 2015. It was derived from U-boot (2015-10) commit cce573e and had a few updates over the years.


-----Original Message-----
From: Sascha Hauer <sha at pengutronix.de> 
Sent: 09 August 2021 20:16
To: Barbier, Renaud <renaud.barbier at abaco.com>
Cc: barebox at lists.infradead.org
Subject: Re: [PATCH 2/3] nand: add NXP IFC nand driver



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Hi Renaud,

On Mon, Aug 02, 2021 at 11:40:03AM +0100, Renaud Barbier wrote:
> Add the NXP IFC nand driver support. This driver can be used with the 
> NXP QorIQ cores.

Could you leave a few words here which base you used for the driver? Is it based on Linux or U-Boot, which version?

> +static void fsl_ifc_ctrl_init(void)
> +{
> +     struct fsl_ifc_ctrl *ctrl;
> +     struct device_node *np;
> +
> +     np = of_find_compatible_node(NULL, NULL, "fsl,ifc");
> +     if (!np)
> +             return;

Looks like this function can fail, it should return an error.

> +             while (!is_timeout(time_start, IFC_TIMEOUT_MS * MSECOND)) {
> +                     ifc_ctrl->nand_stat =
> +                             ifc_in32(ctrl->rregs + 
> + FSL_IFC_NAND_EVTER_STAT);
> +
> +                     if (!(ifc_ctrl->nand_stat & IFC_NAND_SRAM_INIT_EN))
> +                             return 0;
> +             }
> +             pr_err("fsl-ifc: Failed to Initialise SRAM\n");
> +             return 1;

It would be better to return an error code here and propagate that.

Sascha

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