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

Stefano Babic
2014-12-01T09:35:43Z

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@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

--
=====================================================================
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================