Re: [PATCH V4 RFC 2/3] nvmem: add driver for ocotp in i.MX23 and i.MX28
From: Stefan Wahren <hidden>
Date: 2015-07-20 06:45:21
Also in:
linux-arm-kernel
Hi Marek, Am 20.07.2015 um 00:12 schrieb Marek Vasut:
On Monday, July 20, 2015 at 12:04:58 AM, Stefan Wahren wrote:quoted
This patch brings read-only support for the On-Chip OTP cells in the i.MX23 and i.MX28 processor. The driver implements the new NVMEM provider API. Signed-off-by: Stefan Wahren <redacted>How come this driver isn't doing any manipulation with the VDDIO voltage -- or did I miss that? I seem to remember that the VDDIO had to be lowered to 2.8V before the fuses could be programmed and restored to 3.3V afterward. See for example recent mainline u-boot, drivers/misc/mxs_ocotp.c .
Why should the driver implement VDDIO manipulation when there is only read-only support for the OTP bits? There is no ambition to implement write support. Maybe i should clarify that in the comments. Btw i'm on your side that because programming the OTP from userspace is to dangerous. Best regards Stefan
Best regards, Marek Vasut _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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