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Fri, 4 Oct 2024 09:23:31 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Fri, 04 Oct 2024 13:23:11 +0000 From: "Arnd Bergmann" To: "Geert Uytterhoeven" , "Srinivas Kandagatla" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Magnus Damm" , "Yoshihiro Shimoda" Cc: devicetree@vger.kernel.org, Linux-Renesas , linux-kernel@vger.kernel.org Message-Id: <5b4afe5b-a7aa-483f-be53-cd6a8de777db@app.fastmail.com> In-Reply-To: <563d35a3613c3356536978c0e5dc5ad5e47bbd7d.1727963347.git.geert+renesas@glider.be> References: <563d35a3613c3356536978c0e5dc5ad5e47bbd7d.1727963347.git.geert+renesas@glider.be> Subject: Re: [PATCH v3 resend 2/7] nvmem: Add R-Car E-FUSE driver Content-Type: text/plain Content-Transfer-Encoding: 7bit On Thu, Oct 3, 2024, at 14:04, Geert Uytterhoeven wrote: > R-Car Gen4 SoCs contain fuses indicating hardware support or hardware > (e.g. tuning) parameters. Add a driver to access the state of the > fuses. This supports two types of hardware fuse providers: > 1. E-FUSE non-volatile memory accessible through the Pin Function > Controller on R-Car V3U and S4-8, > 2. E-FUSE non-volatile memory accessible through OTP_MEM on R-Car V4H > and V4M. > > The state of the cells can be read using the NVMEM framework, either > from kernel space (e.g. by the Renesas UFSHCD driver), or from > userspace. > > Signed-off-by: Geert Uytterhoeven > Reviewed-by: Yoshihiro Shimoda Acked-by: Arnd Bergmann