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

Browse source

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@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

...

This commit is contained in:

Marek Vasut 2024-02-06 13:55:17 +01:00 • committed by Shawn Guo

parent 616effc027

commit 340d538e3b

1 changed files with 63 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

64

arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc.dts

View file