Hi Tzung-Bi, On a platform, the four max98357a amps will be controlled by only one codec device, as GPIO for SD_MODE is shared by all amps and is the only thing to be controlled. In this sense, I think we can treat max98357a DAI as if it supports four channels. I understand that this solution is not scalable, because one can control as many amps as they want. Theoretically, the number of supported channels by this codec device is unlimited. I found that rt1015.c has similar usage. Do you have a better suggestion to support this kind of use case ? Thanks! On Tue, Jun 1, 2021 at 2:20 PM Tzung-Bi Shih <tzungbi@xxxxxxxxxx> wrote: > > On Wed, May 26, 2021 at 11:47 PM Judy Hsiao <judyhsiao@xxxxxxxxxxxx> wrote: > > Sets channels_max to 4 to support QUAD channel. > > Could you point out probably the up-to-date MAX98357A datasheet for > 4-channel support? > > On a related note, from the public datasheet I could find[1], "Table > 5" only shows 2 channel's configuration. > > [1]: https://pdf1.alldatasheet.com/datasheet-pdf/view/623796/MAXIM/MAX98357A.html
