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Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/ker…
…nel/git/wsa/linux Pull i2c changes from Wolfram Sang: - new drivers for exynos5, bcm kona, and st micro - bigger overhauls for drivers mxs and rcar - typical driver bugfixes, cleanups, improvements - got rid of the superfluous 'driver' member in i2c_client struct This touches a few drivers in other subsystems. All acked. * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (38 commits) i2c: bcm-kona: fix error return code in bcm_kona_i2c_probe() i2c: i2c-eg20t: do not print error message in syslog if no ACK received i2c: bcm-kona: Introduce Broadcom I2C Driver i2c: cbus-gpio: Fix device tree binding i2c: wmt: add missing clk_disable_unprepare() on error i2c: designware: add new ACPI IDs i2c: i801: Add Device IDs for Intel Wildcat Point-LP PCH i2c: exynos5: Remove incorrect clk_disable_unprepare i2c: i2c-st: Add ST I2C controller i2c: exynos5: add High Speed I2C controller driver i2c: rcar: fixup rcar type naming i2c: scmi: remove some bogus NULL checks i2c: sh_mobile & rcar: Enable the driver on all ARM platforms i2c: sh_mobile: Convert to clk_prepare/unprepare i2c: mux: gpio: use reg value for i2c_add_mux_adapter i2c: mux: gpio: use gpio_set_value_cansleep() i2c: Include linux/of.h header i2c: mxs: Fix PIO mode on i.MX23 i2c: mxs: Rework the PIO mode operation i2c: mxs: distinguish i.MX23 and i.MX28 based I2C controller ...
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Broadcom Kona Family I2C | ||
========================= | ||
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This I2C controller is used in the following Broadcom SoCs: | ||
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BCM11130 | ||
BCM11140 | ||
BCM11351 | ||
BCM28145 | ||
BCM28155 | ||
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Required Properties | ||
------------------- | ||
- compatible: "brcm,bcm11351-i2c", "brcm,kona-i2c" | ||
- reg: Physical base address and length of controller registers | ||
- interrupts: The interrupt number used by the controller | ||
- clocks: clock specifier for the kona i2c external clock | ||
- clock-frequency: The I2C bus frequency in Hz | ||
- #address-cells: Should be <1> | ||
- #size-cells: Should be <0> | ||
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Refer to clocks/clock-bindings.txt for generic clock consumer | ||
properties. | ||
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Example: | ||
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i2c@3e016000 { | ||
compatible = "brcm,bcm11351-i2c","brcm,kona-i2c"; | ||
reg = <0x3e016000 0x80>; | ||
interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>; | ||
clocks = <&bsc1_clk>; | ||
clock-frequency = <400000>; | ||
#address-cells = <1>; | ||
#size-cells = <0>; | ||
}; |
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* Samsung's High Speed I2C controller | ||
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The Samsung's High Speed I2C controller is used to interface with I2C devices | ||
at various speeds ranging from 100khz to 3.4Mhz. | ||
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Required properties: | ||
- compatible: value should be. | ||
-> "samsung,exynos5-hsi2c", for i2c compatible with exynos5 hsi2c. | ||
- reg: physical base address of the controller and length of memory mapped | ||
region. | ||
- interrupts: interrupt number to the cpu. | ||
- #address-cells: always 1 (for i2c addresses) | ||
- #size-cells: always 0 | ||
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- Pinctrl: | ||
- pinctrl-0: Pin control group to be used for this controller. | ||
- pinctrl-names: Should contain only one value - "default". | ||
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Optional properties: | ||
- clock-frequency: Desired operating frequency in Hz of the bus. | ||
-> If not specified, the bus operates in fast-speed mode at | ||
at 100khz. | ||
-> If specified, the bus operates in high-speed mode only if the | ||
clock-frequency is >= 1Mhz. | ||
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Example: | ||
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hsi2c@12ca0000 { | ||
compatible = "samsung,exynos5-hsi2c"; | ||
reg = <0x12ca0000 0x100>; | ||
interrupts = <56>; | ||
clock-frequency = <100000>; | ||
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pinctrl-0 = <&i2c4_bus>; | ||
pinctrl-names = "default"; | ||
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#address-cells = <1>; | ||
#size-cells = <0>; | ||
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s2mps11_pmic@66 { | ||
compatible = "samsung,s2mps11-pmic"; | ||
reg = <0x66>; | ||
}; | ||
}; |
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I2C for R-Car platforms | ||
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Required properties: | ||
- compatible: Must be one of | ||
"renesas,i2c-rcar" | ||
"renesas,i2c-r8a7778" | ||
"renesas,i2c-r8a7779" | ||
"renesas,i2c-r8a7790" | ||
- reg: physical base address of the controller and length of memory mapped | ||
region. | ||
- interrupts: interrupt specifier. | ||
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Optional properties: | ||
- clock-frequency: desired I2C bus clock frequency in Hz. The absence of this | ||
propoerty indicates the default frequency 100 kHz. | ||
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Examples : | ||
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i2c0: i2c@e6500000 { | ||
compatible = "renesas,i2c-rcar-h2"; | ||
reg = <0 0xe6500000 0 0x428>; | ||
interrupts = <0 174 0x4>; | ||
}; |
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ST SSC binding, for I2C mode operation | ||
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Required properties : | ||
- compatible : Must be "st,comms-ssc-i2c" or "st,comms-ssc4-i2c" | ||
- reg : Offset and length of the register set for the device | ||
- interrupts : the interrupt specifier | ||
- clock-names: Must contain "ssc". | ||
- clocks: Must contain an entry for each name in clock-names. See the common | ||
clock bindings. | ||
- A pinctrl state named "default" must be defined to set pins in mode of | ||
operation for I2C transfer. | ||
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Optional properties : | ||
- clock-frequency : Desired I2C bus clock frequency in Hz. If not specified, | ||
the default 100 kHz frequency will be used. As only Normal and Fast modes | ||
are supported, possible values are 100000 and 400000. | ||
- st,i2c-min-scl-pulse-width-us : The minimum valid SCL pulse width that is | ||
allowed through the deglitch circuit. In units of us. | ||
- st,i2c-min-sda-pulse-width-us : The minimum valid SDA pulse width that is | ||
allowed through the deglitch circuit. In units of us. | ||
- A pinctrl state named "idle" could be defined to set pins in idle state | ||
when I2C instance is not performing a transfer. | ||
- A pinctrl state named "sleep" could be defined to set pins in sleep state | ||
when driver enters in suspend. | ||
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Example : | ||
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i2c0: i2c@fed40000 { | ||
compatible = "st,comms-ssc4-i2c"; | ||
reg = <0xfed40000 0x110>; | ||
interrupts = <GIC_SPI 187 IRQ_TYPE_LEVEL_HIGH>; | ||
clocks = <&CLK_S_ICN_REG_0>; | ||
clock-names = "ssc"; | ||
clock-frequency = <400000>; | ||
pinctrl-names = "default"; | ||
pinctrl-0 = <&pinctrl_i2c0_default>; | ||
st,i2c-min-scl-pulse-width-us = <0>; | ||
st,i2c-min-sda-pulse-width-us = <5>; | ||
}; |
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@@ -1425,7 +1425,7 @@ M: Wolfram Sang <[email protected]> | |
L: [email protected] | ||
S: Maintained | ||
F: drivers/misc/eeprom/at24.c | ||
F: include/linux/i2c/at24.h | ||
F: include/linux/platform_data/at24.h | ||
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ATA OVER ETHERNET (AOE) DRIVER | ||
M: "Ed L. Cashin" <[email protected]> | ||
|
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