linux/drivers/misc/eeprom
Geert Uytterhoeven f8d3bc1004 eeprom: at25: Add DT support for EEPROMs with odd address bits
Certain EEPROMS have a size that is larger than the number of address
bytes would allow, and store the MSB of the address in bit 3 of the
instruction byte.

This can be described in platform data using EE_INSTR_BIT3_IS_ADDR, or
in DT using the obsolete legacy "at25,addr-mode" property.
But currently there exists no non-deprecated way to describe this in DT.

Hence extend the existing "address-width" DT property to allow
specifying 9 address bits, and enable support for that in the driver.

This has been tested with a Microchip 25LC040A.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-18 15:59:17 +01:00
..
at24.c eeprom: at24: check at24_read/write arguments 2017-11-29 16:05:37 +01:00
at25.c eeprom: at25: Add DT support for EEPROMs with odd address bits 2017-12-18 15:59:17 +01:00
digsy_mtc_eeprom.c
eeprom_93cx6.c eeprom-93cx6: Add (read-only) support for 8-bit mode 2014-11-25 15:42:53 +01:00
eeprom_93xx46.c misc: eeprom_93xx46: Simplify the usage of gpiod API 2017-08-28 16:55:47 +02:00
eeprom.c MISC: add const to bin_attribute structures 2017-08-28 16:55:48 +02:00
idt_89hpesx.c eeprom: idt_89hpesx: Support both ACPI and OF probing 2017-08-31 18:49:41 +02:00
Kconfig eeprom: Add IDT 89HPESx EEPROM/CSR driver 2017-01-19 11:39:57 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
max6875.c MISC: add const to bin_attribute structures 2017-08-28 16:55:48 +02:00