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

[Shawn Guo]

On Mon, May 29, 2023 at 03:35:26PM -0400, Hugo Villeneuve wrote:
> From: Hugo Villeneuve <hvilleneuve at dimonoff.com>
> 
> 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 at dimonoff.com>

Applied, thanks!