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#
# I2C subsystem configuration
#
menu "I2C support"
config DM_I2C
bool "Enable Driver Model for I2C drivers"
depends on DM
help
Enable driver model for I2C. The I2C uclass interface: probe, read,
write and speed, is implemented with the bus drivers operations,
which provide methods for bus setting and data transfer. Each chip
device (bus child) info is kept as parent platdata. The interface
is defined in include/i2c.h. When i2c bus driver supports the i2c
uclass, but the device drivers not, then DM_I2C_COMPAT config can
be used as compatibility layer.
config DM_I2C_COMPAT
bool "Enable I2C compatibility layer"
depends on DM
help
Enable old-style I2C functions for compatibility with existing code.
This option can be enabled as a temporary measure to avoid needing
to convert all code for a board in a single commit. It should not
be enabled for any board in an official release.
config I2C_CROS_EC_TUNNEL
tristate "Chrome OS EC tunnel I2C bus"
depends on CROS_EC
help
This provides an I2C bus that will tunnel i2c commands through to
the other side of the Chrome OS EC to the I2C bus connected there.
This will work whatever the interface used to talk to the EC (SPI,
I2C or LPC). Some Chromebooks use this when the hardware design
does not allow direct access to the main PMIC from the AP.
config I2C_CROS_EC_LDO
bool "Provide access to LDOs on the Chrome OS EC"
depends on CROS_EC
---help---
On many Chromebooks the main PMIC is inaccessible to the AP. This is
often dealt with by using an I2C pass-through interface provided by
the EC. On some unfortunate models (e.g. Spring) the pass-through
is not available, and an LDO message is available instead. This
option enables a driver which provides very basic access to those
regulators, via the EC. We implement this as an I2C bus which
emulates just the TPS65090 messages we know about. This is done to
avoid duplicating the logic in the TPS65090 regulator driver for
enabling/disabling an LDO.
config I2C_SET_DEFAULT_BUS_NUM
bool "Set default I2C bus number"
depends on DM_I2C
help
Set default number of I2C bus to be accessed. This option provides
behaviour similar to old (i.e. pre DM) I2C bus driver.
config I2C_DEFAULT_BUS_NUMBER
hex "I2C default bus number"
depends on I2C_SET_DEFAULT_BUS_NUM
default 0x0
help
Number of default I2C bus to use
config DM_I2C_GPIO
bool "Enable Driver Model for software emulated I2C bus driver"
depends on DM_I2C && DM_GPIO
help
Enable the i2c bus driver emulation by using the GPIOs. The bus GPIO
configuration is given by the device tree. Kernel-style device tree
bindings are supported.
Binding info: doc/device-tree-bindings/i2c/i2c-gpio.txt
config SYS_I2C_AT91
bool "Atmel I2C driver"
depends on DM_I2C && ARCH_AT91
help
Add support for the Atmel I2C driver. A serious problem is that there
is no documented way to issue repeated START conditions for more than
two messages, as needed to support combined I2C messages. Use the
i2c-gpio driver unless your system can cope with this limitation.
Binding info: doc/device-tree-bindings/i2c/i2c-at91.txt
config SYS_I2C_FSL
bool "Freescale I2C bus driver"
depends on DM_I2C
help
Add support for Freescale I2C busses as used on MPC8240, MPC8245, and
MPC85xx processors.
config SYS_I2C_CADENCE
tristate "Cadence I2C Controller"
depends on DM_I2C && (ARCH_ZYNQ || ARM64)
help
Say yes here to select Cadence I2C Host Controller. This controller is
e.g. used by Xilinx Zynq.
config SYS_I2C_DAVINCI
bool "Davinci I2C Controller"
depends on (ARCH_KEYSTONE || ARCH_DAVINCI)
help
Say yes here to add support for Davinci and Keystone I2C controller
config SYS_I2C_DW
bool "Designware I2C Controller"
default n
help
Say yes here to select the Designware I2C Host Controller. This
controller is used in various SoCs, e.g. the ST SPEAr, Altera
SoCFPGA, Synopsys ARC700 and some Intel x86 SoCs.
config SYS_I2C_DW_ENABLE_STATUS_UNSUPPORTED
bool "DW I2C Enable Status Register not supported"
depends on SYS_I2C_DW && (TARGET_SPEAR300 || TARGET_SPEAR310 || \
TARGET_SPEAR320 || TARGET_SPEAR600 || TARGET_X600)
default y
help
Some versions of the Designware I2C controller do not support the
enable status register. This config option can be enabled in such
cases.
config SYS_I2C_ASPEED
bool "Aspeed I2C Controller"
depends on DM_I2C && ARCH_ASPEED
help
Say yes here to select Aspeed I2C Host Controller. The driver
supports AST2500 and AST2400 controllers, but is very limited.
Only single master mode is supported and only byte-by-byte
synchronous reads and writes are supported, no Pool Buffers or DMA.
config SYS_I2C_INTEL
bool "Intel I2C/SMBUS driver"
depends on DM_I2C
help
Add support for the Intel SMBUS driver. So far this driver is just
a stub which perhaps some basic init. There is no implementation of
the I2C API meaning that any I2C operations will immediately fail
for now.
config SYS_I2C_IMX_LPI2C
bool "NXP i.MX LPI2C driver"
help
Add support for the NXP i.MX LPI2C driver.
config SYS_I2C_MESON
bool "Amlogic Meson I2C driver"
depends on DM_I2C && ARCH_MESON
help
Add support for the I2C controller available in Amlogic Meson
SoCs. The controller supports programmable bus speed including
standard (100kbits/s) and fast (400kbit/s) speed and allows the
software to define a flexible format of the bit streams. It has an
internal buffer holding up to 8 bytes for transfers and supports
both 7-bit and 10-bit addresses.
config SYS_I2C_MXC
bool "NXP MXC I2C driver"
help
Add support for the NXP I2C driver. This supports up to four bus
channels and operating on standard mode up to 100 kbits/s and fast
mode up to 400 kbits/s.
# These settings are not used with DM_I2C, however SPL doesn't use
# DM_I2C even if DM_I2C is enabled, and so might use these settings even
# when main u-boot does not!
if SYS_I2C_MXC && (!DM_I2C || SPL)
config SYS_I2C_MXC_I2C1
bool "NXP MXC I2C1"
help
Add support for NXP MXC I2C Controller 1.
Required for SoCs which have I2C MXC controller 1 eg LS1088A, LS2080A
config SYS_I2C_MXC_I2C2
bool "NXP MXC I2C2"
help
Add support for NXP MXC I2C Controller 2.
Required for SoCs which have I2C MXC controller 2 eg LS1088A, LS2080A
config SYS_I2C_MXC_I2C3
bool "NXP MXC I2C3"
help
Add support for NXP MXC I2C Controller 3.
Required for SoCs which have I2C MXC controller 3 eg LS1088A, LS2080A
config SYS_I2C_MXC_I2C4
bool "NXP MXC I2C4"
help
Add support for NXP MXC I2C Controller 4.
Required for SoCs which have I2C MXC controller 4 eg LS1088A, LS2080A
config SYS_I2C_MXC_I2C5
bool "NXP MXC I2C5"
help
Add support for NXP MXC I2C Controller 5.
Required for SoCs which have I2C MXC controller 5 eg LX2160A
config SYS_I2C_MXC_I2C6
bool "NXP MXC I2C6"
help
Add support for NXP MXC I2C Controller 6.
Required for SoCs which have I2C MXC controller 6 eg LX2160A
config SYS_I2C_MXC_I2C7
bool "NXP MXC I2C7"
help
Add support for NXP MXC I2C Controller 7.
Required for SoCs which have I2C MXC controller 7 eg LX2160A
config SYS_I2C_MXC_I2C8
bool "NXP MXC I2C8"
help
Add support for NXP MXC I2C Controller 8.
Required for SoCs which have I2C MXC controller 8 eg LX2160A
endif
if SYS_I2C_MXC_I2C1
config SYS_MXC_I2C1_SPEED
int "I2C Channel 1 speed"
default 40000000 if TARGET_LS2080A_SIMU || TARGET_LS2080A_EMU
default 100000
help
MXC I2C Channel 1 speed
config SYS_MXC_I2C1_SLAVE
int "I2C1 Slave"
default 0
help
MXC I2C1 Slave
endif
if SYS_I2C_MXC_I2C2
config SYS_MXC_I2C2_SPEED
int "I2C Channel 2 speed"
default 40000000 if TARGET_LS2080A_SIMU || TARGET_LS2080A_EMU
default 100000
help
MXC I2C Channel 2 speed
config SYS_MXC_I2C2_SLAVE
int "I2C2 Slave"
default 0
help
MXC I2C2 Slave
endif
if SYS_I2C_MXC_I2C3
config SYS_MXC_I2C3_SPEED
int "I2C Channel 3 speed"
default 100000
help
MXC I2C Channel 3 speed
config SYS_MXC_I2C3_SLAVE
int "I2C3 Slave"
default 0
help
MXC I2C3 Slave
endif
if SYS_I2C_MXC_I2C4
config SYS_MXC_I2C4_SPEED
int "I2C Channel 4 speed"
default 100000
help
MXC I2C Channel 4 speed
config SYS_MXC_I2C4_SLAVE
int "I2C4 Slave"
default 0
help
MXC I2C4 Slave
endif
if SYS_I2C_MXC_I2C5
config SYS_MXC_I2C5_SPEED
int "I2C Channel 5 speed"
default 100000
help
MXC I2C Channel 5 speed
config SYS_MXC_I2C5_SLAVE
int "I2C5 Slave"
default 0
help
MXC I2C5 Slave
endif
if SYS_I2C_MXC_I2C6
config SYS_MXC_I2C6_SPEED
int "I2C Channel 6 speed"
default 100000
help
MXC I2C Channel 6 speed
config SYS_MXC_I2C6_SLAVE
int "I2C6 Slave"
default 0
help
MXC I2C6 Slave
endif
if SYS_I2C_MXC_I2C7
config SYS_MXC_I2C7_SPEED
int "I2C Channel 7 speed"
default 100000
help
MXC I2C Channel 7 speed
config SYS_MXC_I2C7_SLAVE
int "I2C7 Slave"
default 0
help
MXC I2C7 Slave
endif
if SYS_I2C_MXC_I2C8
config SYS_MXC_I2C8_SPEED
int "I2C Channel 8 speed"
default 100000
help
MXC I2C Channel 8 speed
config SYS_MXC_I2C8_SLAVE
int "I2C8 Slave"
default 0
help
MXC I2C8 Slave
endif
config SYS_I2C_OMAP24XX
bool "TI OMAP2+ I2C driver"
depends on ARCH_OMAP2PLUS
help
Add support for the OMAP2+ I2C driver.
if SYS_I2C_OMAP24XX
config SYS_OMAP24_I2C_SLAVE
int "I2C Slave addr channel 0"
default 1
help
OMAP24xx I2C Slave address channel 0
config SYS_OMAP24_I2C_SPEED
int "I2C Slave channel 0 speed"
default 100000
help
OMAP24xx Slave speed channel 0
endif
config SYS_I2C_RCAR_I2C
bool "Renesas RCar I2C driver"
depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
help
Support for Renesas RCar I2C controller.
config SYS_I2C_RCAR_IIC
bool "Renesas RCar Gen3 IIC driver"
depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
help
Support for Renesas RCar Gen3 IIC controller.
config SYS_I2C_ROCKCHIP
bool "Rockchip I2C driver"
depends on DM_I2C
help
Add support for the Rockchip I2C driver. This is used with various
Rockchip parts such as RK3126, RK3128, RK3036 and RK3288. All chips
have several I2C ports and all are provided, controlled by the
device tree.
config SYS_I2C_SANDBOX
bool "Sandbox I2C driver"
depends on SANDBOX && DM_I2C
help
Enable I2C support for sandbox. This is an emulation of a real I2C
bus. Devices can be attached to the bus using the device tree
which specifies the driver to use. See sandbox.dts as an example.
config SYS_I2C_S3C24X0
bool "Samsung I2C driver"
depends on ARCH_EXYNOS4 && DM_I2C
help
Support for Samsung I2C controller as Samsung SoCs.
config SYS_I2C_STM32F7
bool "STMicroelectronics STM32F7 I2C support"
depends on (STM32F7 || STM32H7 || ARCH_STM32MP) && DM_I2C
help
Enable this option to add support for STM32 I2C controller
introduced with STM32F7/H7 SoCs. This I2C controller supports :
_ Slave and master modes
_ Multimaster capability
_ Standard-mode (up to 100 kHz)
_ Fast-mode (up to 400 kHz)
_ Fast-mode Plus (up to 1 MHz)
_ 7-bit and 10-bit addressing mode
_ Multiple 7-bit slave addresses (2 addresses, 1 with configurable mask)
_ All 7-bit addresses acknowledge mode
_ General call
_ Programmable setup and hold times
_ Easy to use event management
_ Optional clock stretching
_ Software reset
config SYS_I2C_TEGRA
bool "NVIDIA Tegra internal I2C controller"
depends on TEGRA
help
Support for NVIDIA I2C controller available in Tegra SoCs.
config SYS_I2C_UNIPHIER
bool "UniPhier I2C driver"
depends on ARCH_UNIPHIER && DM_I2C
default y
help
Support for UniPhier I2C controller driver. This I2C controller
is used on PH1-LD4, PH1-sLD8 or older UniPhier SoCs.
config SYS_I2C_UNIPHIER_F
bool "UniPhier FIFO-builtin I2C driver"
depends on ARCH_UNIPHIER && DM_I2C
default y
help
Support for UniPhier FIFO-builtin I2C controller driver.
This I2C controller is used on PH1-Pro4 or newer UniPhier SoCs.
config SYS_I2C_VERSATILE
bool "Arm Ltd Versatile I2C bus driver"
depends on DM_I2C && (TARGET_VEXPRESS_CA15_TC2 || TARGET_VEXPRESS64_JUNO)
help
Add support for the Arm Ltd Versatile Express I2C driver. The I2C host
controller is present in the development boards manufactured by Arm Ltd.
config SYS_I2C_MVTWSI
bool "Marvell I2C driver"
depends on DM_I2C
help
Support for Marvell I2C controllers as used on the orion5x and
kirkwood SoC families.
config TEGRA186_BPMP_I2C
bool "Enable Tegra186 BPMP-based I2C driver"
depends on TEGRA186_BPMP
help
Support for Tegra I2C controllers managed by the BPMP (Boot and
Power Management Processor). On Tegra186, some I2C controllers are
directly controlled by the main CPU, whereas others are controlled
by the BPMP, and can only be accessed by the main CPU via IPC
requests to the BPMP. This driver covers the latter case.
config SYS_I2C_BUS_MAX
int "Max I2C busses"
depends on ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_SOCFPGA
default 2 if TI816X
default 3 if OMAP34XX || AM33XX || AM43XX || ARCH_KEYSTONE
default 4 if ARCH_SOCFPGA || OMAP44XX || TI814X
default 5 if OMAP54XX
help
Define the maximum number of available I2C buses.
config SYS_I2C_XILINX_XIIC
bool "Xilinx AXI I2C driver"
depends on DM_I2C
help
Support for Xilinx AXI I2C controller.
config SYS_I2C_IHS
bool "gdsys IHS I2C driver"
depends on DM_I2C
help
Support for gdsys IHS I2C driver on FPGA bus.
source "drivers/i2c/muxes/Kconfig"
endmenu