[PATCH] imx93-u-boot: Describe the CPU clocks in the devicetree

[Peng Fan]

> Subject: [PATCH] imx93-u-boot: Describe the CPU clocks in the
> devicetree
> 
> Currently, there is an error when the i.MX93 CPU frequency is
> read:
> 
> Could not read CPU frequency: -2
> CPU:   NXP i.MX93(52) Rev1.1 A55 at 0 MHz
> 
> Fix it by describing the A55 clock nodes in the devicetree, like done on
> other i.MX SoCs.
> 
> With this change, the CPU frequency error is gone and it can be
> correctly
> retrieved:
> 
> CPU:   NXP i.MX93(52) Rev1.1 A55 at 1700 MHz
> CPU:   Industrial temperature grade  (-40C to 105C) at 35C
> 
> As the upstream imx93.dtsi does not describe the CPU clocks, keep the
> clock node in imx93-u-boot.dtsi for now.
> 
> Signed-off-by: Fabio Estevam <festevam at gmail.com>

Reviewed-by: Peng Fan <peng.fan at nxp.com>