Re: [PATCH v25 3/7] firmware: imx: add driver for NXP EdgeLock Enclave

[Frieder Schrempf]

On 22.01.26 12:49, Pankaj Gupta wrote:
> Add MU-based communication interface for secure enclave.
> 
> NXP hardware IP(s) for secure-enclaves like Edgelock Enclave(ELE), are
> embedded in the SoC to support the features like HSM, SHE & V2X, using
> message based communication interface.
> 
> The secure enclave FW communicates with Linux over single or multiple
> dedicated messaging unit(MU) based interface(s).
> Exists on i.MX SoC(s) like i.MX8ULP, i.MX93, i.MX95 etc.
> 
> For i.MX9x SoC(s) there is at least one dedicated ELE MU(s) for each
> world - Linux(one or more) and OPTEE-OS (one or more).
> 
> Other dependent kernel drivers will be:
> - NVMEM: that supports non-volatile devices like EFUSES,
>          managed by NXP's secure-enclave.
> 
> Signed-off-by: Pankaj Gupta <pankaj.gupta@xxxxxxx>
> Reviewed-by: Frank Li <Frank.Li@xxxxxxx>

I tested this on i.MX93 using additional patches to access OTP fuse
registers through the NVMEM driver.

Tested-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>