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zephyr/drivers/i2c/Kconfig.dw

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drivers/i2c: Cleanup Kconfig Move driver specific to dedicated file when relevant (i.e.: more than 1-2 options), use if/endif also. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2018-02-28 11:27:46 +01:00
# Copyright (c) 2018 Intel Corporation
# SPDX-License-Identifier: Apache-2.0
menuconfig I2C_DW
bool "Design Ware I2C support"
drivers: i2c: Update drivers to use devicetree Kconfig symbol Update i2c drivers to use DT_HAS_<compat>_ENABLED Kconfig symbol to expose the driver and enable it by default based on devicetree. We remove 'depend on' Kconfig for symbols that would be implied by the devicetree node existing. Signed-off-by: Kumar Gala <galak@kernel.org>
2022-07-20 15:44:42 -05:00
default y
depends on DT_HAS_SNPS_DESIGNWARE_I2C_ENABLED
drivers: i2c: dw: Enable PINCTRL conjuction with dt prop 'pinctrl-0' If there is a pinctrl-0 property, PINCTRL will be enabled in conjunction with it. Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
2024-12-25 02:22:04 +09:00
select PINCTRL if $(dt_compat_any_has_prop,$(DT_COMPAT_SNPS_DESIGNWARE_I2C),pinctrl-0)
drivers: i2c_dw: Add clock control This adds optional clock control support to the i2c_dw driver. The support currently assumes that the clock control binding uses clkid for the clock cell name. Signed-off-by: Łukasz Kędziora <lkedziora@antmicro.com> Signed-off-by: Piotr Zierhoffer <pzierhoffer@antmicro.com> Signed-off-by: Andreas Weissel <andreas.weissel@synaptics.com>
2025-10-29 10:01:26 +01:00
depends on !$(dt_compat_any_has_prop,$(DT_COMPAT_SNPS_DESIGNWARE_I2C),clocks) || CLOCK_CONTROL
drivers: i2c: dw: select PCIE select PCIE if the controller is on a pcie bus. Signed-off-by: Fin Maaß <f.maass@vogl-electronic.com>
2026-06-17 12:52:00 +02:00
select PCIE if $(dt_compat_on_bus,$(DT_COMPAT_SNPS_DESIGNWARE_I2C),pcie)
select DYNAMIC_INTERRUPTS if $(dt_compat_on_bus,$(DT_COMPAT_SNPS_DESIGNWARE_I2C),pcie)
i2c: dw: use the generic timeout macro Replace the driver specific I2C_DW_RW_TIMEOUT_MS with the generic macro that allows override via Kconfig and dt properties. Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
2026-07-21 10:08:19 +00:00
select I2C_TRANSFER_TIMEOUT_SUPPORTED
drivers/i2c: Cleanup Kconfig Move driver specific to dedicated file when relevant (i.e.: more than 1-2 options), use if/endif also. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2018-02-28 11:27:46 +01:00
help
kconfig: Hide the DesignWare I2C driver on unsupported platforms When users are configuring nRF applications they are given the option to enable the DesignWare I2C driver. But they should not be given this option because nRF SoCs do not have DesignWare I2C HW. This commit hides the driver by default by introducing the config option HAS_I2C_DW. Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2018-10-19 14:05:26 +02:00
Enable the Design Ware I2C driver
drivers/i2c: Cleanup Kconfig Move driver specific to dedicated file when relevant (i.e.: more than 1-2 options), use if/endif also. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2018-02-28 11:27:46 +01:00
i2c: dw: use a common "if I2C_DW" Replace various depends on I2C_DW with a single if I2C_DW, this stops options under here from being exposed in Kconfig for unrelated platforms and cleans up the config a bit. Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
2026-07-21 09:59:35 +00:00
if I2C_DW
drivers/i2c: Cleanup Kconfig Move driver specific to dedicated file when relevant (i.e.: more than 1-2 options), use if/endif also. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2018-02-28 11:27:46 +01:00
config I2C_DW_CLOCK_SPEED
int "Set the clock speed for I2C"
dts: realtek: Add I2C SCL count offset properties Add devicetree properties `lcnt-offset` and `hcnt-offset` to allow board-specific tuning of SCL high/low count timing on RTS5912. Signed-off-by: Elmo Lan <elmo_lan@realtek.com>
2025-10-31 22:19:40 +08:00
default 100 if I2C_RTS5912
drivers/i2c: Cleanup Kconfig Move driver specific to dedicated file when relevant (i.e.: more than 1-2 options), use if/endif also. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2018-02-28 11:27:46 +01:00
default 32
drivers: i2c: i2c_dw: Added intel lpss dma support for I2C Enabled intel LPSS DMA interface using dw common to support usage of internal DMA in LPSS I2C to transfer and receive data. Signed-off-by: Bindu S <bindu.s@intel.com>
2023-08-08 10:45:49 +05:30
config I2C_DW_LPSS_DMA
bool "Use I2C integrated DMA for asynchronous transfer"
i2c: dw: use a common "if I2C_DW" Replace various depends on I2C_DW with a single if I2C_DW, this stops options under here from being exposed in Kconfig for unrelated platforms and cleans up the config a bit. Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
2026-07-21 09:59:35 +00:00
depends on !I2C_RTS5912
drivers: i2c: i2c_dw: Added intel lpss dma support for I2C Enabled intel LPSS DMA interface using dw common to support usage of internal DMA in LPSS I2C to transfer and receive data. Signed-off-by: Bindu S <bindu.s@intel.com>
2023-08-08 10:45:49 +05:30
select DMA
select DMA_INTEL_LPSS
help
drivers: i2c: correct spelling Employ a code spell checking tool to scan and correct spelling errors in all files within the drivers/i2c directory. Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
2024-01-13 00:55:44 +07:00
This option enables I2C DMA feature to be used for asynchronous
data transfers. All Tx operations are done using dma channel 0 and
drivers: i2c: i2c_dw: Added intel lpss dma support for I2C Enabled intel LPSS DMA interface using dw common to support usage of internal DMA in LPSS I2C to transfer and receive data. Signed-off-by: Bindu S <bindu.s@intel.com>
2023-08-08 10:45:49 +05:30
all Rx operations are done using dma channel 1.
drivers: I2C_DW: Fix I2C scan example Solves two identical issues listed below: Issue 1: I2C scanner example for DesignWare hardware gets stuck indefenitely resulting in system hang up.This is because DW I2C driver does not handle 0 byte transfer correctly which is the case for I2C scan example. Fixed it by overwriting the msg length to 1 if it is 0 and the buffer is not NULL. Issue 2: Similarly, if the I2C pins are not pulled up (nothing connected to I2C pins), the DW hardware does not actually send the data (assuming contention on the bus) hence not releasing the semaphore resulting in calling thread waiting forever. Fixed it by adding a timeout to k_sem_take call and return error if cannot successfully acquire it. Tested scenarios where nothing was connected on the bus and saw the I2C scan example complete the whole scan command. Then connected two different sensors on the I2C bus and saw both the address on the console. Tested both the uses cases on Raspberry Pi Pico. Fixes #70332. Found that micropython tackles the same issue by implementing I2C scan commands with Soft I2C because the same reason mentioned in Issue 1. Signed-off-by: Dev Joshi <quic_devbhave@quicinc.com>
2024-06-30 22:27:19 -07:00
drivers: i2c: rts5912 i2c dirver base on DesignWare I2C driver to implement RTS5912 I2C driver. 1. support customize bus recovery function. 2. fix isr timing issue by enable tx empty control. 3. support stuck at low handle by enable bus clear feature. 4. support custom stuck at low timeout set from dts 5. disable block mode in rts5912 i2c. 6. support I2C_ALLOW_NO_STOP_TRANSACTIONS Signed-off-by: Titan Chen <titan.chen@realtek.com>
2025-04-24 11:58:21 +08:00
config I2C_DW_EXTENDED_SUPPORT
bool "Extended DW features"
help
This option enables support for the SCL/SDA timeout registers and some
additional features of the DW I2C controller.
i2c: dw: Allow implementations to block suspend to idle Some implementations of the DesginWare I2C controller do not support the system suspending to idle during an I2C transaction. Add a Kconfig option to allow locking of the power management policy state during I2C transactions. Signed-off-by: Keith Short <keithshort@google.com>
2026-02-12 15:52:01 -07:00
config I2C_DW_PM_POLICY_STATE_LOCK
bool "Lock power managemnet policy during I2C transfers"
help
Enable this option to block power management policy state changes
during I2C transfers.
drivers: i2c: dw: add support for I2C core clock optimization - Introduce support for the DesignWare I2C specific core clock frequency optimization feature (IC_CLK_FREQ_OPTIMIZATION). - This feature reduces the internal latency cycles required to generate the SCL high and low periods, allowing the controller to achieve target bus speeds with a lower input clock (ic_clk) frequency. - The driver now supports both standard calculation (optimization=0) and the new optimized mode, selectable via Kconfig. This ensures compatibility with existing hardware while enabling the optimization on platforms that support it. Signed-off-by: Shreehari HK <shreehari.hk@alifsemi.com>
2026-02-19 12:11:07 +05:30
config I2C_DW_IC_CLK_FREQ_OPTIMIZATION
bool "Core Clock Frequency Optimization"
help
Enable hardware optimization to reduce the required I2C core clock frequency.
This features reduces the internal latency cycles required to generate the
SCL high and low periods, allowing the controller to achieve target bus
speeds with a lower system clock frequency (ic_clk).
Enable this option only if your hardware IP supports this specific latency
reduction feature.
i2c: dw: use a common "if I2C_DW" Replace various depends on I2C_DW with a single if I2C_DW, this stops options under here from being exposed in Kconfig for unrelated platforms and cleans up the config a bit. Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
2026-07-21 09:59:35 +00:00
endif # I2C_DW
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