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From: Mathieu Othacehe <othacehe@gnu.org>
To: Marek Vasut <marek.vasut@mailbox.org>
Cc: Tom Rini <trini@konsulko.com>,  Paul Barker <paul@pbarker.dev>,
	Nobuhiro Iwamatsu <iwamatsu@nigauri.org>,
	 u-boot@lists.denx.de
Subject: Re: [PATCH] misc: Add RZG2L OTP support
Date: Fri, 17 Apr 2026 10:00:36 +0200	[thread overview]
Message-ID: <87wly6rp7f.fsf@gnu.org> (raw)
In-Reply-To: <a0bb44a6-1805-4c0c-b7a5-0d9d31f9d6b7@mailbox.org>


Hello Marek,

>> + * XXX: To enable direct fusing through U-Boot, the trusted-firmware must
>> + * allow the non-secure world to perform fusing operations. This is controlled
>> + * by the SYS_SLVACCCTL7 register.
>
> Is there some SMC call to perform the fusing via TFA ?

No, there is a fusing driver in Renesas OP-TEE fork[1] but that's it.

>> + */
>> +#define RZG2L_OTP_BASE      0x11860000
>> +#define RZG2L_SYSC_BASE     0x11020000
>
> Can this be parsed out of DT ?

There is no entry for the OTP_BASE in the device-tree. There is one for
the SYSC_BASE though.

I took the rest of your comments into account and sent a v2.

Thanks,

Mathieu

[1]: https://github.com/renesas-rz/rzg_optee-os

  reply	other threads:[~2026-04-17  8:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-14  9:14 [PATCH] misc: Add RZG2L OTP support Mathieu Othacehe
2026-04-14 14:53 ` Tom Rini
2026-04-14 22:18 ` Marek Vasut
2026-04-17  8:00   ` Mathieu Othacehe [this message]
2026-04-17 13:59     ` Marek Vasut
2026-04-22  9:37       ` Mathieu Othacehe
2026-04-22 19:05         ` Marek Vasut

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