[PATCH 3/9] firmware: imx: ele: Add API functions for OCOTP fuse access

[Frank Li]

On Tue, Jun 16, 2026 at 01:52:18PM +0200, Frieder Schrempf wrote:
> From: Frieder Schrempf <frieder.schrempf at kontron.de>
>
> The ELE S400 API provides read and write access to the OCOTP fuse
> registers. This adds the necessary API functions imx_se_read_fuse()
> and imx_se_write_fuse() to be used by other drivers such as the
> OCOTP S400 NVMEM driver.
>
> This is ported from the downstream vendor kernel.
>
> Signed-off-by: Frieder Schrempf <frieder.schrempf at kontron.de>
> ---
>  drivers/firmware/imx/ele_base_msg.c | 122 ++++++++++++++++++++++++++++++++++++
>  drivers/firmware/imx/ele_base_msg.h |   6 ++
>  include/linux/firmware/imx/se_api.h |   3 +
>  3 files changed, 131 insertions(+)
>
...
> +++ b/include/linux/firmware/imx/se_api.h
> @@ -11,4 +11,7 @@
>  #define SOC_ID_OF_IMX8ULP		0x084d
>  #define SOC_ID_OF_IMX93			0x9300
>
> +int imx_se_read_fuse(void *se_if_data, uint16_t fuse_id, u32 *value);
> +int imx_se_write_fuse(void *se_if_data, uint16_t fuse_id, u32 value);
> +

This API should implement in fuse drivers. Other consume should use standard
fuse API to get value. If put here, it may bypass fuse driver.

Frank

>  #endif /* __SE_API_H__ */
>
> --
> 2.54.0
>
>