Re: [PATCH v2] arm64: dts: ti: k3-am69-sk: Add idle-states for remaining SERDES instances

[Siddharth Vadapalli <s-vadapalli@ti.com>]

On Tue, Jul 08, 2025 at 05:09:42PM +0530, Hrushikesh Salunke wrote:
> In AM69 SoC there are 4 instances of the 4 lane SERDES. So in
> "serdes_ln_ctrl" node there are total 16 entries in "mux-reg-mask"
> property. But "idle-states" is defined only for the lanes of first two
> SERDES instances. SERDES lane mapping is left at its reset state of
> "zero" for all four lanes of SERDES2 and SERDES4. The reset state of
> "zero" corresponds to the following configuration:
> 
> Lanes 0 and 1 of SERDES2 are unused
> CPSW MAC Ports 1 and 2 mapped to lanes 2 and 3 of SERDES2
> EDP Lanes 0, 1, 2 and 3 mapped to lanes 0, 1, 2 and 3 of SERDES4
> 
> For completeness, define the "idle-states" for the lanes of remaining
> SERDES instances.
> 
> Signed-off-by: Hrushikesh Salunke <h-salunke@ti.com>
> ---
> This patch is based on commit
> 26ffb3d6f02c  Add linux-next specific files for 20250704
> 
> Changes since v1
> As pointed by out by Siddharth, setting lanes of remaining SERDES
> to "unused" will cause regression on AM69-SK as these lanes are used
> by CPSW and Display. Updated patch to set the desired values for
> remaining serdes lanes.

Reviewed-by: Siddharth Vadapalli <s-vadapalli@ti.com>

Regards,
Siddharth.