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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-04 10:57:43 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-04 10:57:43 -0800 |
commit | 4141cf676b9e345d3ddeb1710dd3156a09c50244 (patch) | |
tree | 4b2b6249e99efdd47eafa5780f106d593f64708b /Documentation/devicetree/bindings/eeprom | |
parent | 3462ac57033e79a87dbae2497773f22b9c536fbc (diff) | |
parent | e38c85644e11c6dc5a39305c96b617f63403423d (diff) | |
download | linux-4141cf676b9e345d3ddeb1710dd3156a09c50244.tar.bz2 |
Merge branch 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"I2C has the following changes for you:
- new flag to mark DMA safe buffers in i2c_msg. Also, some
infrastructure around it. And docs.
- huge refactoring of the at24 driver led by the new maintainer
Bartosz
- update I2C bus recovery to send STOP after recovery
- conversion from gpio to gpiod for I2C bus recovery
- adding a fault-injector to the i2c-gpio driver
- lots of small driver improvements, and bigger ones to
i2c-sh_mobile"
* 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (99 commits)
i2c: mv64xxx: Add myself as maintainer for this driver
i2c: mv64xxx: Fix clock resource by adding an optional bus clock
i2c: mv64xxx: Remove useless test before clk_disable_unprepare
i2c: mxs: use true and false for boolean values
i2c: meson: update doc description to fix build warnings
i2c: meson: add configurable divider factors
dt-bindings: i2c: update documentation for the Meson-AXG
i2c: imx-lpi2c: add runtime pm support
i2c: rcar: fix some trivial typos in comments
i2c: davinci: fix the cpufreq transition
i2c: rk3x: add proper kerneldoc header
i2c: rk3x: account for const type of of_device_id.data
i2c: acorn: remove outdated path from file header
i2c: acorn: add MODULE_LICENSE tag
i2c: rcar: implement bus recovery
i2c: send STOP after successful bus recovery
i2c: ensure SDA is released in recovery if SDA is controllable
i2c: add 'set_sda' to bus_recovery_info
i2c: add identifier in declarations for i2c_bus_recovery
i2c: make kerneldoc about bus recovery more precise
...
Diffstat (limited to 'Documentation/devicetree/bindings/eeprom')
-rw-r--r-- | Documentation/devicetree/bindings/eeprom/at24.txt | 78 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/eeprom/eeprom.txt | 47 |
2 files changed, 78 insertions, 47 deletions
diff --git a/Documentation/devicetree/bindings/eeprom/at24.txt b/Documentation/devicetree/bindings/eeprom/at24.txt new file mode 100644 index 000000000000..1812c848e369 --- /dev/null +++ b/Documentation/devicetree/bindings/eeprom/at24.txt @@ -0,0 +1,78 @@ +EEPROMs (I2C) + +Required properties: + + - compatible: Must be a "<manufacturer>,<model>" pair. The following <model> + values are supported (assuming "atmel" as manufacturer): + + "atmel,24c00", + "atmel,24c01", + "atmel,24cs01", + "atmel,24c02", + "atmel,24cs02", + "atmel,24mac402", + "atmel,24mac602", + "atmel,spd", + "atmel,24c04", + "atmel,24cs04", + "atmel,24c08", + "atmel,24cs08", + "atmel,24c16", + "atmel,24cs16", + "atmel,24c32", + "atmel,24cs32", + "atmel,24c64", + "atmel,24cs64", + "atmel,24c128", + "atmel,24c256", + "atmel,24c512", + "atmel,24c1024", + + If <manufacturer> is not "atmel", then a fallback must be used + with the same <model> and "atmel" as manufacturer. + + Example: + compatible = "microchip,24c128", "atmel,24c128"; + + Supported manufacturers are: + + "catalyst", + "microchip", + "ramtron", + "renesas", + "nxp", + "st", + + Some vendors use different model names for chips which are just + variants of the above. Known such exceptions are listed below: + + "renesas,r1ex24002" - the fallback is "atmel,24c02" + + - reg: The I2C address of the EEPROM. + +Optional properties: + + - pagesize: The length of the pagesize for writing. Please consult the + manual of your device, that value varies a lot. A wrong value + may result in data loss! If not specified, a safety value of + '1' is used which will be very slow. + + - read-only: This parameterless property disables writes to the eeprom. + + - size: Total eeprom size in bytes. + + - no-read-rollover: This parameterless property indicates that the + multi-address eeprom does not automatically roll over + reads to the next slave address. Please consult the + manual of your device. + + - wp-gpios: GPIO to which the write-protect pin of the chip is connected. + +Example: + +eeprom@52 { + compatible = "atmel,24c32"; + reg = <0x52>; + pagesize = <32>; + wp-gpios = <&gpio1 3 0>; +}; diff --git a/Documentation/devicetree/bindings/eeprom/eeprom.txt b/Documentation/devicetree/bindings/eeprom/eeprom.txt deleted file mode 100644 index 27f2bc15298a..000000000000 --- a/Documentation/devicetree/bindings/eeprom/eeprom.txt +++ /dev/null @@ -1,47 +0,0 @@ -EEPROMs (I2C) - -Required properties: - - - compatible : should be "<manufacturer>,<type>", like these: - - "atmel,24c00", "atmel,24c01", "atmel,24c02", "atmel,24c04", - "atmel,24c08", "atmel,24c16", "atmel,24c32", "atmel,24c64", - "atmel,24c128", "atmel,24c256", "atmel,24c512", "atmel,24c1024" - - "catalyst,24c32" - - "microchip,24c128" - - "ramtron,24c64" - - "renesas,r1ex24002" - - The following manufacturers values have been deprecated: - "at", "at24" - - If there is no specific driver for <manufacturer>, a generic - device with <type> and manufacturer "atmel" should be used. - Possible types are: - "24c00", "24c01", "24c02", "24c04", "24c08", "24c16", "24c32", "24c64", - "24c128", "24c256", "24c512", "24c1024", "spd" - - - reg : the I2C address of the EEPROM - -Optional properties: - - - pagesize : the length of the pagesize for writing. Please consult the - manual of your device, that value varies a lot. A wrong value - may result in data loss! If not specified, a safety value of - '1' is used which will be very slow. - - - read-only: this parameterless property disables writes to the eeprom - - - size: total eeprom size in bytes - -Example: - -eeprom@52 { - compatible = "atmel,24c32"; - reg = <0x52>; - pagesize = <32>; -}; |