| # |
| # 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 |