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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-14 23:54:40 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-14 23:54:40 +0300
commit96895199c8648db475b38aac5fe6a04ec14a49c4 (patch)
tree3cb2a2a68a4750de20cf3deddd4a897189164ea9 /Documentation/devicetree
parent8fd9589ced9a4ab1cf23296fa1c17d07e883f734 (diff)
parent6cf710d47633be388e831713738626d1911163c8 (diff)
downloadlinux-96895199c8648db475b38aac5fe6a04ec14a49c4.tar.xz
Merge branch 'i2c/for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang: "For 3.19, the I2C subsystem has to offer special candy this time. Right in time for Christmas :) - I2C slave framework: finally, a generic mechanism for Linux being an I2C slave (if the bus driver supports that). Docs are still missing but will come later this cycle, the code is good enough to go. - I2C muxes represent their topology in sysfs much more detailed. This will help users to navigate around much easier. - irq population of i2c clients is now done at probe time, not device creation time, to have better support for deferred probing. - new drivers for Imagination SCB, Amlogic Meson - DMA support added for Freescale IMX, Renesas SHMobile - slightly bigger driver updates to OMAP, i801, AT91, and rk3x (mostly quirk handling, timing updates, and using better kernel interfaces) - eeprom driver can now write with byte-access (very slow, but OK to have) - and the bunch of smaller fixes, cleanups, ID updates..." * 'i2c/for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (56 commits) i2c: sh_mobile: remove unneeded DMA mask i2c: rcar: add slave support i2c: slave-eeprom: add eeprom simulator driver i2c: core changes for slave support MAINTAINERS: add I2C dt bindings also to I2C realm i2c: designware: Fix falling time bindings doc i2c: davinci: switch to use platform_get_irq Documentation: i2c: Use PM ops instead of legacy suspend/resume i2c: sh_mobile: optimize irq entry i2c: pxa: add support for SCCB devices omap: i2c: don't check bus state IP rev3.3 and earlier i2c: s3c2410: Handle i2c sys_cfg register in i2c driver i2c: rk3x: add Kconfig dependency on COMMON_CLK i2c: omap: add notes related to i2c multimaster mode i2c: omap: don't reset controller if Arbitration Lost detected i2c: omap: implement workaround for handling invalid BB-bit values i2c: omap: cleanup register definitions i2c: rk3x: handle dynamic clock rate changes correctly i2c: at91: enable probe deferring on dma channel request i2c: at91: remove legacy DMA support ...
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-designware.txt4
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-img-scb.txt26
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-imx.txt11
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-meson.txt24
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-sh_mobile.txt14
-rw-r--r--Documentation/devicetree/bindings/i2c/trivial-devices.txt8
6 files changed, 85 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
index 5199b0c8cf7a..fee26dc3e858 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
@@ -14,10 +14,10 @@ Optional properties :
- i2c-sda-hold-time-ns : should contain the SDA hold time in nanoseconds.
This option is only supported in hardware blocks version 1.11a or newer.
- - i2c-scl-falling-time : should contain the SCL falling time in nanoseconds.
+ - i2c-scl-falling-time-ns : should contain the SCL falling time in nanoseconds.
This value which is by default 300ns is used to compute the tLOW period.
- - i2c-sda-falling-time : should contain the SDA falling time in nanoseconds.
+ - i2c-sda-falling-time-ns : should contain the SDA falling time in nanoseconds.
This value which is by default 300ns is used to compute the tHIGH period.
Example :
diff --git a/Documentation/devicetree/bindings/i2c/i2c-img-scb.txt b/Documentation/devicetree/bindings/i2c/i2c-img-scb.txt
new file mode 100644
index 000000000000..b6461602dca5
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-img-scb.txt
@@ -0,0 +1,26 @@
+IMG Serial Control Bus (SCB) I2C Controller
+
+Required Properties:
+- compatible: "img,scb-i2c"
+- reg: Physical base address and length of controller registers
+- interrupts: Interrupt number used by the controller
+- clocks : Should contain a clock specifier for each entry in clock-names
+- clock-names : Should contain the following entries:
+ "scb", for the SCB core clock.
+ "sys", for the system clock.
+- clock-frequency: The I2C bus frequency in Hz
+- #address-cells: Should be <1>
+- #size-cells: Should be <0>
+
+Example:
+
+i2c@18100000 {
+ compatible = "img,scb-i2c";
+ reg = <0x18100000 0x200>;
+ interrupts = <GIC_SHARED 2 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&i2c0_clk>, <&system_clk>;
+ clock-names = "scb", "sys";
+ clock-frequency = <400000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+};
diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx.txt b/Documentation/devicetree/bindings/i2c/i2c-imx.txt
index 4a8513e44740..52d37fd8d3e5 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-imx.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-imx.txt
@@ -11,6 +11,8 @@ Required properties:
Optional properties:
- clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz.
The absence of the propoerty indicates the default frequency 100 kHz.
+- dmas: A list of two dma specifiers, one for each entry in dma-names.
+- dma-names: should contain "tx" and "rx".
Examples:
@@ -26,3 +28,12 @@ i2c@70038000 { /* HS-I2C on i.MX51 */
interrupts = <64>;
clock-frequency = <400000>;
};
+
+i2c0: i2c@40066000 { /* i2c0 on vf610 */
+ compatible = "fsl,vf610-i2c";
+ reg = <0x40066000 0x1000>;
+ interrupts =<0 71 0x04>;
+ dmas = <&edma0 0 50>,
+ <&edma0 0 51>;
+ dma-names = "rx","tx";
+};
diff --git a/Documentation/devicetree/bindings/i2c/i2c-meson.txt b/Documentation/devicetree/bindings/i2c/i2c-meson.txt
new file mode 100644
index 000000000000..682f9a6f766e
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-meson.txt
@@ -0,0 +1,24 @@
+Amlogic Meson I2C controller
+
+Required properties:
+ - compatible: must be "amlogic,meson6-i2c"
+ - reg: physical address and length of the device registers
+ - interrupts: a single interrupt specifier
+ - clocks: clock for the device
+ - #address-cells: should be <1>
+ - #size-cells: should be <0>
+
+Optional properties:
+- clock-frequency: the desired I2C bus clock frequency in Hz; in
+ absence of this property the default value is used (100 kHz).
+
+Examples:
+
+ i2c@c8100500 {
+ compatible = "amlogic,meson6-i2c";
+ reg = <0xc8100500 0x20>;
+ interrupts = <0 92 1>;
+ clocks = <&clk81>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
diff --git a/Documentation/devicetree/bindings/i2c/i2c-sh_mobile.txt b/Documentation/devicetree/bindings/i2c/i2c-sh_mobile.txt
index d2153ce36fa8..2bfc6e7ed094 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-sh_mobile.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-sh_mobile.txt
@@ -2,6 +2,15 @@ Device tree configuration for Renesas IIC (sh_mobile) driver
Required properties:
- compatible : "renesas,iic-<soctype>". "renesas,rmobile-iic" as fallback
+ Examples with soctypes are:
+ - "renesas,iic-r8a73a4" (R-Mobile APE6)
+ - "renesas,iic-r8a7740" (R-Mobile A1)
+ - "renesas,iic-r8a7790" (R-Car H2)
+ - "renesas,iic-r8a7791" (R-Car M2-W)
+ - "renesas,iic-r8a7792" (R-Car V2H)
+ - "renesas,iic-r8a7793" (R-Car M2-N)
+ - "renesas,iic-r8a7794" (R-Car E2)
+ - "renesas,iic-sh73a0" (SH-Mobile AG5)
- reg : address start and address range size of device
- interrupts : interrupt of device
- clocks : clock for device
@@ -10,6 +19,11 @@ Required properties:
Optional properties:
- clock-frequency : frequency of bus clock in Hz. Default 100kHz if unset.
+- dmas : Must contain a list of two references to DMA
+ specifiers, one for transmission, and one for
+ reception.
+- dma-names : Must contain a list of two DMA names, "tx" and "rx".
+
Pinctrl properties might be needed, too. See there.
diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
index 605dcca5dbec..9f4e3824e71e 100644
--- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt
+++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
@@ -17,6 +17,9 @@ adi,adt7473 +/-1C TDM Extended Temp Range I.C
adi,adt7475 +/-1C TDM Extended Temp Range I.C
adi,adt7476 +/-1C TDM Extended Temp Range I.C
adi,adt7490 +/-1C TDM Extended Temp Range I.C
+adi,adxl345 Three-Axis Digital Accelerometer
+adi,adxl346 Three-Axis Digital Accelerometer
+adi,adxl34x Three-Axis Digital Accelerometer
at,24c08 i2c serial eeprom (24cxx)
atmel,24c00 i2c serial eeprom (24cxx)
atmel,24c01 i2c serial eeprom (24cxx)
@@ -76,7 +79,12 @@ ovti,ov5642 OV5642: Color CMOS QSXGA (5-megapixel) Image Sensor with OmniBSI an
pericom,pt7c4338 Real-time Clock Module
plx,pex8648 48-Lane, 12-Port PCI Express Gen 2 (5.0 GT/s) Switch
ramtron,24c64 i2c serial eeprom (24cxx)
+ricoh,r2025sd I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+ricoh,r2221tl I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rs5c372a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+ricoh,rs5c372b I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+ricoh,rv5c386 I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+ricoh,rv5c387a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
samsung,24ad0xd1 S524AD0XF1 (128K/256K-bit Serial EEPROM for Low Power)
sii,s35390a 2-wire CMOS real-time clock
st-micro,24c256 i2c serial eeprom (24cxx)