Re: [PATCH 0/6] spi: add multi-CS and per-transfer lane mask support

[David Lechner]

On 7/14/26 3:57 AM, Andy Shevchenko wrote:
> On Tue, Jul 14, 2026 at 02:55:31AM -0300, Jonathan Santos wrote:
>> This series introduces two SPI subsystem features: per-transfer chipselect
>> masks and multi-CS device support. Together they address the multi-device
>> setup described in [1] and the limitation noted in [2], where no SPI
>> controller completely handles logical chip selects beyond the first one.
>>
>> The first part of the set addresses multi-CS support. Some SPI controllers
>> can assert multiple chip selects simultaneously, but the existing code
>> hardcoded CS index 0 in both spi_set_cs() and of_spi_parse_dt(),
>> preventing this from working.
>>
>> The second part addresses dynamic lane selection for STRIPE mode. In
>> SPI_MULTI_LANE_MODE_STRIPE, all available lanes are currently always
>> active. Some peripherals need to select a different subset of rx/tx lanes
>> per transfer. New fields are added to the spi_transfer struct to allow
>> drivers to specify which lanes to use for each transfer. The documentation
>> is also updated to describe this new behavior.
> 
>> [1]: https://lore.kernel.org/linux-iio/af0EGv172ZMl%2F6N5@xxxxxxxxxxxxxxxxxxxxxxxxxx/T/#t
>> [2]: https://lore.kernel.org/all/20250915183725.219473-1-jonas.gorski@xxxxxxxxx/
> 
> Mark usually "merges" a series like this and cover letter goes as merge commit
> message. With that in mind, can we use Link tags for the above? Like
> 
> Link: ... [1]
> Link: ... [2]
> 

Beware, that would cause b4 to add the links to every patch in the series.