[PATCH v2] arm64: dts: imx8mp: Enable SAI audio on Data Modul i.MX8M Plus eDM SBC

[Shawn Guo]

On Tue, Feb 06, 2024 at 01:55:17PM +0100, Marek Vasut wrote:
> Add SAI I2S and audio bindings to Data Modul i.MX8M Plus eDM SBC.
> 
> The SGTL5000 is attached to SAI3, however the SGTL5000 codec MCLK
> must be supplied even if the SAI3 is not in use and is controlled
> separately by the codec. The MCLK is also used to drive the codec
> I2C block, so without MCLK, I2C access to the codec would not be
> possible.
> 
> To provide such flexible MCLK control, use PWM4 with period 1 and
> duty cycle 50% as 12 MHz clock source, as there is no direct way
> to route MX8MP CCM clock to the MCLK pin. Use codec as bitclock
> and frame clock master, so that the SGTL5000 PLL can be used to
> generate derived clock.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>

Applied, thanks!