[PATCH v2 4/5] dt-bindings: serial: snps-dw-apb-uart: Allow use of a power-domain

[Rob Herring (Arm)]

On Wed, 23 Jul 2025 08:56:46 +0000, Jonas Karlman wrote:
> The UART controllers in most Rockchip SoCs are part of power domains
> that are always powered on. These always powered on power domains have
> typically not been described in the device tree.
> 
> Because these power domains have been left out of the device tree there
> has not been any real need to properly describe the UART controllers
> power domain of Rockchip SoCs.
> 
> On Rockchip RK3528 the UART controllers are spread out among the
> described PD_RKVENC, PD_VO and PD_VPU power domains. However, one UART
> controller belong to an undescribed always powered on power domain.
> 
> Add support to describe an optional power-domains for the UART
> controllers.
> 
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
> ---
> v2: New patch
> ---
>  Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml | 3 +++
>  1 file changed, 3 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh at kernel.org>