u-boot.git/drivers/i2c, branch master

treewide: Kconfig: use bool instead of tristate

2026-07-10T21:45:57Z

U-Boot does not support modules, so having tristate options is useless. Therefore this patch does a blind replace of all tristate options to bool tree-wide. Signed-off-by: Anshul Dalal Reviewed-by: Heiko Schocher Reviewed-by: Quentin Schulz Reviewed-by: Siddharth Vadapalli Reviewed-by: Neha Malcom Francis Reviewed-by: Romain Gantois Reviewed-by: Simon Glass

i2c: designware: fix i2c probe error

2026-07-08T09:23:25Z

Probing i2c slave device just needs its device address. A certain type of chipsets such as RTC S35390A have no offset, which means address length should be 0. But the current designware_i2c_probe_chip function requires offset 0 and its length 1. This causes the designware-i2c to be initialized again and again. Furthermore, after booting into kernel, the designware-i2c kernel driver complains its controller timeout. This patch fixes this misbehaviour in such way that only device address is issued, no reinitialization needs when target device not detected, the designware-i2c kernel driver continues working. Signed-off-by: Coben Han

i2c: nx: Add License

2026-07-08T09:23:10Z

Add License information for nx_i2c driver. Signed-off-by: Peng Fan Reviewed-by: Heiko Schocher

i2c: nx: Use dev_read_addr_ptr()

2026-07-08T09:22:48Z

Use dev_read_addr_ptr() which supports both live device tree and flat DT backends, avoiding direct dependency on devfdt_* helpers. No functional changes. Signed-off-by: Peng Fan Reviewed-by: Heiko Schocher

treewide: Staticize and constify acpi ops

2026-06-29T21:29:44Z

Set the acpi_ops structure as static const where applicable. The The structure is not accessible from outside of drivers and is not going to be modified at runtime. The structure may be unused in a couple of drivers depending on their configuration, mark those sites with __maybe_unused . Signed-off-by: Marek Vasut Reviewed-by: Simon Glass

Kconfig: i2c: restyle

2026-06-25T20:15:37Z

Restyle all Kconfigs for "i2c": Menu entries : no space left Menu attributes: 1 TAB Help text : 1 TAB + 2 spaces Replace '---help---' by 'help' Signed-off-by: Johan Jonker

Merge patch series "arm: omap: Add back omap4 support"

2026-06-17T15:52:33Z

Bastien Curutchet says: This series aims to add back the omap4 support. This support was removed by commit b0ee3fe642c ("arm: ti: Remove omap4 platform support") because at that moment, none of the OMAP4-based boards had done the migration to DM_I2C. My use case is an old product based on the Variscite's omap4 system on module. I needed to upgrade U-Boot on it for security reasons. I think that this work could benefit to other people who may have same kind of product to maintain. Patch 1 to 3 remove the omap's clock driver dependency to the AM33xx as it is also present in omap4 platforms. I tested these changes on the beaglebone black to ensure I didn't break the AM33xx case. Patch 4 & 5 revert the deletion of the omap4 support. The revert makes checkpatch.pl angry. I fixed quite a lots of warnings already but it remains two kinds of warnings: - CamelCase on timings structure, I left the CamelCase because IMHO it's more readable this way. - #ifdef CONFIG_XYZ shouldn't be used anymore. I left one of this because I didn't find a clean way to get rid of it. Patch 6 adds support for the Variscite's system on module. This system on module is supported by the Linux project through ti/omap/omap4-var-som-om44.dtsi Link: https://lore.kernel.org/r/20260608-omap4-support-v3-0-8595ccd203f0@bootlin.com

arm: ti: Introduce back omap4 support

2026-06-17T15:50:36Z

omap4 support was dropped by b0ee3fe642c ("arm: ti: Remove omap4 platform support") because the supported boards hadn't done the conversion to CONFIG_DM_I2C in time. It still exists some omap4-based products and they could benefit from the latest U-Boot support for obvious security reasons. Revert part of b0ee3fe642c to introduce back a minimal support for the omap4 platform. Fix the checkpatch's warning/errors induced by this revert. Following warnings are still present: | arch/arm/include/asm/arch-omap4/clock.h:445: WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? | arch/arm/mach-omap2/omap4/hwinit.c:24: WARNING: Use 'if (IS_ENABLED(CONFIG...))' instead of '#if or #ifdef' where possible | arch/arm/mach-omap2/omap4/sdram_elpida.c:142: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:143: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:144: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:145: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:146: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:147: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:148: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:149: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:150: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:151: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:152: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:153: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:154: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:155: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:156: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:157: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:158: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:159: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:209: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:210: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:213: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:215: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:216: CHECK: Avoid CamelCase: | arch/arm/mach-omap2/omap4/sdram_elpida.c:217: CHECK: Avoid CamelCase: I didn't find an clean way to fix the "don't use #ifdef" warning as we need to define the gpio_bank for the SPL build only. For the CamelCase warnings, the incriminated attributes represent timings, so IMHO, it is more readable with CamelCase. Set myself as OMAP4 maintainer. Signed-off-by: Bastien Curutchet

Merge tag 'v2026.07-rc3' into next

2026-05-25T17:35:35Z

Prepare v2026.07-rc3

i2c: imx_lpi2c: Fix MSR status check issue in STOP

2026-05-15T20:31:39Z

In bus_i2c_stop, the MSR SDF is checked in a loop after stop command is sent. Meanwhile, some error status in MSR is also checked by imx_lpci2c_check_clear_error. But the imx_lpci2c_check_clear_error will clear the MSR. It causes problem in below situation: In current loop, SDF does not set, but error status is found by imx_lpci2c_check_clear_error (for example, NDF), then NDF will be cleared and result has NDF error. However, because SDF does not set in this loop, it goes not next loop. When SDF is set in next loop, imx_lpci2c_check_clear_error is re-executed, but as the MSR is cleared, the result is 0. Then the stop return 0. But it should return NDF error. Signed-off-by: Ye Li Reviewed-by: Peng Fan