diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-10-04 22:57:00 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-10-04 22:57:51 +0200 |
| commit | c37d6154c0b9163c27e53cc1d0be3867b4abd760 (patch) | |
| tree | 7a24522c56d1cb284dff1d3c225bbdaba0901bb5 /Documentation/devicetree/bindings/misc/at25.txt | |
| parent | e7a570ff7dff9af6e54ff5e580a61ec7652137a0 (diff) | |
| parent | 8a1ab3155c2ac7fbe5f2038d6e26efeb607a1498 (diff) | |
Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic
Patches from David Howells <dhowells@redhat.com>:
This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.
Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.
* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
UAPI: (Scripted) Disintegrate include/asm-generic
UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
c6x: remove c6x signal.h
UAPI: Split compound conditionals containing __KERNEL__ in Arm64
UAPI: Fix the guards on various asm/unistd.h files
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/misc/at25.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/misc/at25.txt | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/Documentation/devicetree/bindings/misc/at25.txt b/Documentation/devicetree/bindings/misc/at25.txt index ab3c327929d..1d3447165c3 100644 --- a/Documentation/devicetree/bindings/misc/at25.txt +++ b/Documentation/devicetree/bindings/misc/at25.txt @@ -1,21 +1,35 @@ -Atmel AT25 eeprom +EEPROMs (SPI) compatible with Atmel at25. Required properties: - compatible : "atmel,at25". - reg : chip select number - spi-max-frequency : max spi frequency to use +- pagesize : size of the eeprom page +- size : total eeprom size in bytes +- address-width : number of address bits (one of 8, 16, or 24) +Optional properties: +- spi-cpha : SPI shifted clock phase, as per spi-bus bindings. +- spi-cpol : SPI inverse clock polarity, as per spi-bus bindings. +- read-only : this parameter-less property disables writes to the eeprom + +Obsolete legacy properties are can be used in place of "size", "pagesize", +"address-width", and "read-only": - at25,byte-len : total eeprom size in bytes - at25,addr-mode : addr-mode flags, as defined in include/linux/spi/eeprom.h - at25,page-size : size of the eeprom page -Examples: -at25@0 { - compatible = "atmel,at25"; - reg = <0> - spi-max-frequency = <5000000>; +Additional compatible properties are also allowed. + +Example: + at25@0 { + compatible = "atmel,at25", "st,m95256"; + reg = <0> + spi-max-frequency = <5000000>; + spi-cpha; + spi-cpol; - at25,byte-len = <0x8000>; - at25,addr-mode = <2>; - at25,page-size = <64>; -}; + pagesize = <64>; + size = <32768>; + address-width = <16>; + }; |