arm64: dts: imx8mn-var-som-symphony: adapt FEC pinctrl for SOMs with onboard PHY

Browse source

The VAR SOM symphony carrier board can be used with SOMs which have a
soldered ethernet PHY onboard and with SOMs which don't have one.

For SOMs with an onboard PHY, the PHY on the cartrier board is not
used, and GPIO1_IO9 is used as a reset line to the onboard PHY.

For SOMs without an onboard PHY, the PHY on the carrier board is
used. For this configuration, pca9534 GPIO 5 (located on the carrier
board) is used as a reset line to the PHY, and GPIO1_IO9 is not
used.

GPIO1_IO9 is not connected to any user-accessible pins or functions,
and leaving it enabled in the mux pinctrl for both configurations is
safe.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

...

This commit is contained in:

Hugo Villeneuve 2023-05-29 15:35:26 -04:00 • committed by Shawn Guo

parent 26ca44bdbd

commit 37d61885ac

1 changed files with 0 additions and 40 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

40

arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts

View file