[PATCH v2 3/4] i2c: omap24xx_i2c: support CONFIG for repeated start in DM_I2C xfer

[Heiko Schocher]

Hello Aniket,

On 10.03.25 11:36, Aniket Limaye wrote:
> Repeated Start Condition (Sr) can be used to transfer multiple i2c msgs
> without sending a Stop condition (P). So far, the driver default was to
> always send a Stop condition after every i2c msg.
> 
> Add support for a config option (CONFIG_SYS_I2C_OMAP24XX_REPEATED_START)
> to disable sending the Stop condition by default. If this config is
> enabled, Stop condition will be sent only if explicitly requested in the
> msg flags OR if it is the last msg in the transfer.
> 
> Consequently, handle the Repeated Start condition (Sr) in the next msg
> by not calling the wait_for_bb() check since it will simply timeout in
> the absence of a stop condition (BB will be 1 until Stop is programmed)
> 
> Signed-off-by: Aniket Limaye <a-limaye at ti.com>
> ---
> 
> v2:
> - fixup code formatting and comment blocks
> - CONFIG_I2C_REPEATED_START -> CONFIG_SYS_I2C_OMAP24XX_REPEATED_START
> - Link to v1: https://lore.kernel.org/u-boot/20250304220546.866602-3-a-limaye@ti.com/
> 
> ---
>   drivers/i2c/omap24xx_i2c.c | 22 ++++++++++++++++------
>   1 file changed, 16 insertions(+), 6 deletions(-)


Thanks!

Reviewed-by: Heiko Schocher <hs at denx.de>

bye,
Heiko
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