From: Conor Dooley <conor@kernel.org>
To: Sven Peter <sven@kernel.org>
Cc: Janne Grunau <j@jannau.net>, Neal Gompa <neal@gompa.dev>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: reset: Add Apple SoC CIO reset
Date: Mon, 10 Aug 2026 17:02:02 +0100 [thread overview]
Message-ID: <20260810-unveiled-specked-a856434db8df@spud> (raw)
In-Reply-To: <20260809-b4-cio-reset-v1-1-4f33777d9b4b@kernel.org>
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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@kernel.org>
Fix the sashiko complaint and then
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
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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next prev parent reply other threads:[~2026-08-10 16:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-09 12:16 [PATCH 0/3] Apple SoC CIO (USB4/Thunderbolt) reset controller Sven Peter
2026-08-09 12:16 ` [PATCH 1/3] dt-bindings: reset: Add Apple SoC CIO reset Sven Peter
2026-08-10 16:02 ` Conor Dooley [this message]
2026-08-09 12:16 ` [PATCH 2/3] reset: Add Apple SoC CIO reset driver Sven Peter
2026-08-09 14:30 ` Joshua Peisach
2026-08-09 15:20 ` Sven Peter
2026-08-09 17:13 ` Joshua Peisach
2026-08-09 12:16 ` [PATCH 3/3] arm64: dts: apple: Add CIO reset controllers Sven Peter
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