[U-Boot] [PATCH 2/3] mxs_ocotp: check for errors from the OTP controller after writing

[Stefano Babic]

On 21/11/2014 17:54, Hector Palacios wrote:
> The write operation may fail when trying to write to a locked area. In
> this case the ERROR bit is set in the CTRL register. Check for that
> condition and return an error.
> 
> Signed-off-by: Hector Palacios <hector.palacios at digi.com>
> ---
>  drivers/misc/mxs_ocotp.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/misc/mxs_ocotp.c b/drivers/misc/mxs_ocotp.c
> index 09002814f2f0..1659ee6a5eec 100644
> --- a/drivers/misc/mxs_ocotp.c
> +++ b/drivers/misc/mxs_ocotp.c
> @@ -221,6 +221,13 @@ static int mxs_ocotp_write_fuse(uint32_t addr, uint32_t mask)
>  		goto fail;
>  	}
>  
> +	/* Check for errors */
> +	if (readl(&ocotp_regs->hw_ocotp_ctrl) & OCOTP_CTRL_ERROR) {
> +		puts("Failed writing fuses!\n");
> +		ret = -EPERM;
> +		goto fail;
> +	}
> +
>  fail:
>  	mxs_ocotp_scale_vddio(0, &vddio_val);
>  	if (mxs_ocotp_scale_hclk(0, &hclk_val))
> 

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic

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