[PATCH 1/3] dt-bindings: reset: Add Apple SoC CIO reset

Conor Dooley conor at kernel.org
Mon Aug 10 09:02:02 PDT 2026


On Sun, Aug 09, 2026 at 02:16:02PM +0200, Sven Peter wrote:
> The CIO (USB4/Thunderbolt) blocks on Apple Silicon SoCs have a reset
> inside the power manager that has to be deasserted before their
> co-processor can be booted. On t8103 each port comes with a dedicated
> register page, represented as a standalone node. On t600x a single
> register shared by all ports of a die is located in the middle of the
> PMGR MMIO region instead, represented as a sub-node of the PMGR syscon.
> 
> Signed-off-by: Sven Peter <sven at kernel.org>

Fix the sashiko complaint and then
Reviewed-by: Conor Dooley <conor.dooley at microchip.com>
pw-bot: not-applicable

> +  - |
> +    power-management at 28e080000 {
> +        compatible = "apple,t6000-pmgr", "apple,pmgr", "syscon", "simple-mfd";
> +        reg = <0x8e080000 0x1c000>;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +
> +        reset-controller at 1a034 {
> +            compatible = "apple,t6000-cio-reset";
> +            reg = <0x1a034 0x4>;
> +            #reset-cells = <1>;
> +        };
> +    };

Probably the fix is actually moving this to the parent device bnding.
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