From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Marco Felsch <m.felsch@pengutronix.de>
Cc: "Miquel Raynal" <miquel.raynal@bootlin.com>,
"Richard Weinberger" <richard@nod.at>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Bartosz Golaszewski" <brgl@bgdev.pl>,
"Russell King" <linux@armlinux.org.uk>,
"Joel Stanley" <joel@jms.id.au>,
"Andrew Jeffery" <andrew@codeconstruct.com.au>,
"Nicolas Ferre" <nicolas.ferre@microchip.com>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Claudiu Beznea" <claudiu.beznea@tuxon.dev>,
"Shawn Guo" <shawnguo@kernel.org>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Pengutronix Kernel Team" <kernel@pengutronix.de>,
"Fabio Estevam" <festevam@gmail.com>,
"Vladimir Zapolskiy" <vz@mleia.com>,
"Andrew Lunn" <andrew@lunn.ch>,
"Gregory Clement" <gregory.clement@bootlin.com>,
"Sebastian Hesselbarth" <sebastian.hesselbarth@gmail.com>,
"Tony Lindgren" <tony@atomide.com>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Magnus Damm" <magnus.damm@gmail.com>,
"Dinh Nguyen" <dinguyen@kernel.org>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Jonathan Neuschäfer" <j.neuschaefer@gmx.net>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Nicholas Piggin" <npiggin@gmail.com>,
"Christophe Leroy" <christophe.leroy@csgroup.eu>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"Huacai Chen" <chenhuacai@kernel.org>,
"WANG Xuerui" <kernel@xen0n.name>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-aspeed@lists.ozlabs.org, imx@lists.linux.dev,
linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
linux-tegra@vger.kernel.org, openbmc@lists.ozlabs.org,
linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org,
loongarch@lists.linux.dev
Subject: Re: [PATCH 0/9] AT24 EEPROM MTD Support
Date: Fri, 23 Aug 2024 19:24:19 +0300 [thread overview]
Message-ID: <Zsi3s9XithGEROwX@smile.fi.intel.com> (raw)
In-Reply-To: <20240701-b4-v6-10-topic-usbc-tcpci-v1-0-3fd5f4a193cc@pengutronix.de>
On Mon, Jul 01, 2024 at 03:53:39PM +0200, Marco Felsch wrote:
> This series adds the intial support to handle EEPROMs via the MTD layer
> as well. This allow the user-space to have separate paritions since
> EEPROMs can become quite large nowadays.
>
> With this patchset applied EEPROMs can be accessed via:
> - legacy 'eeprom' device
> - nvmem device
> - mtd device(s)
>
> The patchset targets only the AT24 (I2C) EEPROMs since I have no access
> to AT25 (SPI) EEPROMs nor to one of the other misc/eeprom/* devices.
>
> Note: I'm not familiar with Kconfig symbol migration so I don't know if
> the last patch is required at the moment. Please be notified that the
> list of recipients is quite large due to the defconfig changes.
FWIW, I think that MTD is *not* the place for EEPROMs.
Yeah, we have the driver spread over the kernel for EEPROMs (mostly due to
historical reasons and absence an umbrella subsystem for them), but it's not
the reason to hack them into something which is not quite suitable.
If NVMEM needs to be updated and may cover these cases after all (and do not
forget about *small* size EEPROMs that most likely appear on the devices with
limited amount of resources!) in a reasonable size and performance, why not?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2024-08-23 16:25 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-01 13:53 [PATCH 0/9] AT24 EEPROM MTD Support Marco Felsch
2024-07-01 13:53 ` [PATCH 1/9] mtd: core: add nvmem_write support Marco Felsch
2024-07-01 13:53 ` [PATCH 2/9] mtd: add mtd_is_master helper Marco Felsch
2024-07-01 16:14 ` Sergei Shtylyov
2024-07-02 8:22 ` Marco Felsch
2024-07-01 13:53 ` [PATCH 3/9] mtd: add support to handle EEPROM devices Marco Felsch
2024-07-01 13:53 ` [PATCH 4/9] mtd: devices: add AT24 eeprom support Marco Felsch
2024-07-01 16:14 ` Tudor Ambarus
2024-07-02 13:41 ` Pratyush Yadav
2024-07-02 13:56 ` Maxime Ripard
2024-07-02 14:15 ` Pratyush Yadav
2024-07-02 14:34 ` Maxime Ripard
2024-07-08 6:44 ` Miquel Raynal
2024-07-09 9:22 ` Marco Felsch
2024-07-09 9:43 ` Miquel Raynal
2024-07-09 10:38 ` Marco Felsch
2024-07-17 8:19 ` Miquel Raynal
2024-07-18 9:17 ` Marco Felsch
2024-08-23 15:37 ` Miquel Raynal
2024-07-01 13:53 ` [PATCH 5/9] ARM: defconfig: convert to MTD_EEPROM_AT24 Marco Felsch
2024-07-10 12:48 ` Arnd Bergmann
2024-07-10 12:59 ` Bartosz Golaszewski
2024-07-10 14:06 ` Arnd Bergmann
2024-07-01 13:53 ` [PATCH 6/9] powerpc: " Marco Felsch
2024-07-01 13:53 ` [PATCH 7/9] MIPS: configs: " Marco Felsch
2024-07-01 13:53 ` [PATCH 8/9] LoongArch: " Marco Felsch
2024-07-01 13:53 ` [PATCH 9/9] eeprom: at24: remove deprecated Kconfig symbol Marco Felsch
2024-07-02 8:57 ` Bartosz Golaszewski
2024-07-02 9:15 ` Marco Felsch
2024-08-23 16:24 ` Andy Shevchenko [this message]
2024-08-26 7:51 ` [PATCH 0/9] AT24 EEPROM MTD Support Marco Felsch
2024-08-26 10:32 ` Andy Shevchenko
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