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

Conor Dooley <[email protected]> Mon, 10 Aug 2026 17:02:02 +0100

Newsgroups	dev.linux.lists.asahi,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Message-ID	<20260810-unveiled-specked-a856434db8df@spud>

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 <[email protected]>

Fix the sashiko complaint and then
Reviewed-by: Conor Dooley <[email protected]>
pw-bot: not-applicable

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