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From: Marco Felsch <m.felsch@pengutronix.de>
To: Fabian Pflug <f.pflug@pengutronix.de>
Cc: BAREBOX <barebox@lists.infradead.org>
Subject: Re: [PATCH 2/4] nvmem: ocotp: extend support to query the sticky bit
Date: Thu, 18 Dec 2025 20:16:51 +0100	[thread overview]
Message-ID: <20251218191651.6jcpronwwvlk5cdz@pengutronix.de> (raw)
In-Reply-To: <20251218-v2025-11-0-topic-imx6-field-return-v1-2-3781143198d6@pengutronix.de>

On 25-12-18, Fabian Pflug wrote:
> The i.MX* devices do have an sticky bit which indicates if the
> field-return fuse can be written. Before only support for i.MX8* was
> provided. Extend this for the i.MX6* series.
> 
> Signed-off-by: Fabian Pflug <f.pflug@pengutronix.de>
> ---
>  drivers/nvmem/ocotp.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/nvmem/ocotp.c b/drivers/nvmem/ocotp.c
> index 7bca275404..1f74fddb60 100644
> --- a/drivers/nvmem/ocotp.c
> +++ b/drivers/nvmem/ocotp.c
> @@ -294,7 +294,7 @@ static void imx8m_lock_srk_revoke(struct ocotp_priv *priv)
>  	writel(val, priv->base + OCOTP_SW_STICKY);
>  }
>  
> -static bool imx8m_field_return_locked(struct ocotp_priv *priv)
> +static bool imx_field_return_locked(struct ocotp_priv *priv)

Nit: I would mention the rename within the commit message at least.

Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>

>  {
>  	return readl(priv->base + OCOTP_SW_STICKY) & OCOTP_SW_STICKY_FIELD_RETURN_LOCK;
>  }
> @@ -990,6 +990,7 @@ static struct imx_ocotp_data imx6q_ocotp_data = {
>  	.fuse_blow = imx6_fuse_blow_addr,
>  	.fuse_read = imx6_fuse_read_addr,
>  	.ctrl = &ocotp_ctrl_reg_default,
> +	.field_return_locked = imx_field_return_locked,
>  };
>  
>  static struct imx_ocotp_data imx6sl_ocotp_data = {
> @@ -1002,6 +1003,7 @@ static struct imx_ocotp_data imx6sl_ocotp_data = {
>  	.fuse_blow = imx6_fuse_blow_addr,
>  	.fuse_read = imx6_fuse_read_addr,
>  	.ctrl = &ocotp_ctrl_reg_default,
> +	.field_return_locked = imx_field_return_locked,
>  };
>  
>  static struct imx_ocotp_data imx6ul_ocotp_data = {
> @@ -1014,6 +1016,7 @@ static struct imx_ocotp_data imx6ul_ocotp_data = {
>  	.fuse_blow = imx6_fuse_blow_addr,
>  	.fuse_read = imx6_fuse_read_addr,
>  	.ctrl = &ocotp_ctrl_reg_default,
> +	.field_return_locked = imx_field_return_locked,
>  };
>  
>  static struct imx_ocotp_data imx6ull_ocotp_data = {
> @@ -1026,6 +1029,7 @@ static struct imx_ocotp_data imx6ull_ocotp_data = {
>  	.fuse_blow = imx6_fuse_blow_addr,
>  	.fuse_read = imx6_fuse_read_addr,
>  	.ctrl = &ocotp_ctrl_reg_default,
> +	.field_return_locked = imx_field_return_locked,
>  };
>  
>  static struct imx_ocotp_data vf610_ocotp_data = {
> @@ -1063,7 +1067,7 @@ static struct imx_ocotp_data imx8mp_ocotp_data = {
>  	.fuse_read = imx6_fuse_read_addr,
>  	.srk_revoke_locked = imx8m_srk_revoke_locked,
>  	.lock_srk_revoke = imx8m_lock_srk_revoke,
> -	.field_return_locked = imx8m_field_return_locked,
> +	.field_return_locked = imx_field_return_locked,
>  	.ctrl = &ocotp_ctrl_reg_8mp,
>  };
>  
> @@ -1095,7 +1099,7 @@ static struct imx_ocotp_data imx8mm_ocotp_data = {
>  	.fuse_read = imx6_fuse_read_addr,
>  	.srk_revoke_locked = imx8m_srk_revoke_locked,
>  	.lock_srk_revoke = imx8m_lock_srk_revoke,
> -	.field_return_locked = imx8m_field_return_locked,
> +	.field_return_locked = imx_field_return_locked,
>  	.feat = &imx8mm_featctrl_data,
>  	.ctrl = &ocotp_ctrl_reg_default,
>  };
> @@ -1116,7 +1120,7 @@ static struct imx_ocotp_data imx8mn_ocotp_data = {
>  	.fuse_read = imx6_fuse_read_addr,
>  	.srk_revoke_locked = imx8m_srk_revoke_locked,
>  	.lock_srk_revoke = imx8m_lock_srk_revoke,
> -	.field_return_locked = imx8m_field_return_locked,
> +	.field_return_locked = imx_field_return_locked,
>  	.feat = &imx8mn_featctrl_data,
>  	.ctrl = &ocotp_ctrl_reg_default,
>  };
> 
> -- 
> 2.47.3
> 
> 

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  reply	other threads:[~2025-12-18 19:17 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-18 17:36 [PATCH 0/4] i.mx: hab/ocotop: extend field return to i.MX6 Fabian Pflug
2025-12-18 17:36 ` [PATCH 1/4] arm: mach-imx6: use kconfig for field return Fabian Pflug
2025-12-18 19:12   ` Marco Felsch
2025-12-18 17:36 ` [PATCH 2/4] nvmem: ocotp: extend support to query the sticky bit Fabian Pflug
2025-12-18 19:16   ` Marco Felsch [this message]
2025-12-18 17:36 ` [PATCH 3/4] i.MX: HAB: extend field_return support to imx6 Fabian Pflug
2025-12-18 19:23   ` Marco Felsch
2025-12-18 17:36 ` [PATCH 4/4] commands: hab: extend by field_return fuse burn Fabian Pflug
2025-12-18 20:03   ` Marco Felsch

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