Hi Krzysztof, Am Mittwoch, 20. Dezember 2023, 16:48:34 CET schrieb Krzysztof Kozlowski: > On 19/12/2023 13:29, Alexander Stein wrote: > > On SoC like i.MX8QXP some SAI IP cores support only Rx path. Allow > > specifying only an Rx DMA channel, while omitting the Tx one. > > > > Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx> > > --- > > The feature list in reference manual IMX8DQXPRM Rev. 0 05/2020 > > section 1.1.2 "Features" explicitly state that SAI2 and SAI3 is > > receive only. > > Why aren't you constraining it per variant/device? If only some have one > DMA channel, then I would normally expect allOf:if:then narrowing it for > each device. I'm not sure I get what you want to constraint. In the very same SoC there are SAI IP instances supporting Rx & Tx while others support Rx only. The feature list in RM IMX8DQXPRM Rev. 0 05/2020 states: > 4x SAI (SAI0 and SAI1 are transmit/receive; SAI2 and SAI3 are receive only) An actual example can be seen at [1]. Best regards, Alexander [1] https://lore.kernel.org/all/20231214150243.1991532-4-alexander.stein@xxxxxxxxxxxxxxx/ > Best regards, > Krzysztof -- TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht München, HRB 105018 Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider http://www.tq-group.com/
