Commit graph

7 commits

Author SHA1 Message Date
Wenyou Yang
de6567522e misc: i2c_eeprom: Add compatible for AT24MAC402
Add the new compatible "atmel,24mac402" to accommodate AT24MAC402.
The AT24MAC402 is a 2K Serial EEPROM and the 2-Kbit memory array
is internally organized as 16 pages of 16 bytes of EEPROM each.
The 48-bit EUI address in the AT24MAC402 are located in the extended
memory block.

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
2017-09-12 17:58:54 -04:00
Wenyou Yang
7264066707 misc: i2c_eeprom: Add compatible for 24AA02E48
Add the new compatible "microchip,24aa02e48" to accommodate 24AA02E48,
the 24AA02E48 is a 2K I2C Serial EEPROM with pre-programmed globally
unique, 48-bit node address, and 8-byte page size.

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
2017-09-12 17:58:53 -04:00
Masahiro Yamada
5e75ea1506 i2c_eeprom: add static to i2c_eeprom_std_ops/probe
These are only used in drivers/mis/i2c_eeprom.c

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-06-26 07:12:47 +02:00
Jonas Karlman
8880efbd1f i2c_eeprom: add read and write functions
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-10 13:37:22 -06:00
mario.six@gdsys.cc
d7e28918aa i2c_eeprom: Add reading support
This patch implements the reading functionality for the generic I2C
EEPROM driver, which was just a non-functional stub until now.

Since the page size will be of importance for the writing support, we
add suitable members to the private data structure to keep track of it.

Compatibility strings for a range of at24c* chips are added.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
2016-07-22 09:52:59 -04:00
Masahiro Yamada
ee5ee87642 i2c_eeprom: include <linux/err.h> to fix build error
drivers/misc/i2c_eeprom.c fails to build unless CONFIG_FIT_SIGNATURE
is defined.

  CC      drivers/misc/i2c_eeprom.o
drivers/misc/i2c_eeprom.c: In function 'i2c_eeprom_read':
drivers/misc/i2c_eeprom.c:15:10: error: 'ENODEV' undeclared
(first use in this function)
drivers/misc/i2c_eeprom.c:15:10: note: each undeclared identifier
is reported only once for each function it appears in
drivers/misc/i2c_eeprom.c: In function 'i2c_eeprom_write':
drivers/misc/i2c_eeprom.c:21:10: error: 'ENODEV' undeclared
(first use in this function)
drivers/misc/i2c_eeprom.c:22:1: warning: control reaches end of
non-void function [-Wreturn-type]
drivers/misc/i2c_eeprom.c: In function 'i2c_eeprom_read':
drivers/misc/i2c_eeprom.c:16:1: warning: control reaches end of
non-void function [-Wreturn-type]
make[2]: *** [drivers/misc/i2c_eeprom.o] Error 1
make[1]: *** [drivers/misc] Error 2
make: *** [drivers] Error 2

By the way, Sandbox (enabling CONFIG_FIT_SIGNATURE) is luckily
working depending on it.
Sandbox includes include/asm-generic/errno.h
            from include/errno.h
            from include/u-boot/rsa-checksum.h
            from include/image.h
            from include/common.h
            from drivers/misc/i2c_eeprom.c

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-01-05 17:45:15 -07:00
Simon Glass
20142019a9 dm: Add a simple EEPROM driver
There seem to be a few EEPROM drivers around - perhaps we should have a
single standard one? This simple driver is used for sandbox testing, but
could be pressed into more active service.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-12-11 13:18:43 -07:00