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Merge branch 'i2c/for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Browse source 
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  i2c: acorn: remove outdated path from file header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
  ...
This commit is contained in:
Linus Torvalds 2018-02-04 10:57:43 -08:00
commit 4141cf676b
45 changed files with 1381 additions and 1012 deletions
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78
Documentation/devicetree/bindings/eeprom/at24.txt Normal file
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@ -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>;
};

47
Documentation/devicetree/bindings/eeprom/eeprom.txt
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@ -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>;
};

6
Documentation/devicetree/bindings/i2c/i2c-meson.txt
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@ -1,7 +1,11 @@
Amlogic Meson I2C controller
Required properties:
- compatible: must be "amlogic,meson6-i2c" or "amlogic,meson-gxbb-i2c"
- compatible: must be:
"amlogic,meson6-i2c" for Meson8 and compatible SoCs
"amlogic,meson-gxbb-i2c" for GXBB and compatible SoCs
"amlogic,meson-axg-i2c"for AXG and compatible SoCs
- reg: physical address and length of the device registers
- interrupts: a single interrupt specifier
- clocks: clock for the device

1
Documentation/devicetree/bindings/i2c/i2c-mtk.txt
View file

@ -5,6 +5,7 @@ The MediaTek's I2C controller is used to interface with I2C devices.
Required properties:
- compatible: value should be either of the following.
"mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for MediaTek MT2701
"mediatek,mt2712-i2c": for MediaTek MT2712
"mediatek,mt6577-i2c": for MediaTek MT6577
"mediatek,mt6589-i2c": for MediaTek MT6589
"mediatek,mt7622-i2c": for MediaTek MT7622

13
Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt
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@ -1,10 +1,19 @@
* NXP PCA954x I2C bus switch
The driver supports NXP PCA954x and PCA984x I2C mux/switch devices.
Required Properties:
- compatible: Must contain one of the following.
"nxp,pca9540", "nxp,pca9542", "nxp,pca9543", "nxp,pca9544",
"nxp,pca9545", "nxp,pca9546", "nxp,pca9547", "nxp,pca9548"
"nxp,pca9540",
"nxp,pca9542",
"nxp,pca9543",
"nxp,pca9544",
"nxp,pca9545",
"nxp,pca9546", "nxp,pca9846",
"nxp,pca9547", "nxp,pca9847",
"nxp,pca9548", "nxp,pca9848",
"nxp,pca9849"
- reg: The I2C address of the device.

20
Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
View file

@ -25,6 +25,15 @@ default frequency is 100kHz
whenever you're using the "allwinner,sun6i-a31-i2c"
compatible.
- clocks: : pointers to the reference clocks for this device, the
first one is the one used for the clock on the i2c bus,
the second one is the clock used to acces the registers
of the controller
- clock-names : names of used clocks, mandatory if the second clock is
used, the name must be "core", and "reg" (the latter is
only for Armada 7K/8K).
Examples:
i2c@11000 {
@ -42,3 +51,14 @@ For the Armada XP:
interrupts = <29>;
clock-frequency = <100000>;
};
For the Armada 7040:
i2c@701000 {
compatible = "marvell,mv78230-i2c";
reg = <0x701000 0x20>;
interrupts = <29>;
clock-frequency = <100000>;
clock-names = "core", "reg";
clocks = <&core_clock>, <&reg_clock>;
};