From: Sven Peter <sven@kernel.org>
To: Sven Peter <sven@kernel.org>, 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>
Cc: asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 3/3] arm64: dts: apple: Add CIO reset controllers
Date: Sun, 09 Aug 2026 14:16:04 +0200 [thread overview]
Message-ID: <20260809-b4-cio-reset-v1-3-4f33777d9b4b@kernel.org> (raw)
In-Reply-To: <20260809-b4-cio-reset-v1-0-4f33777d9b4b@kernel.org>
Add the reset controllers used to start the CIO (USB4/Thunderbolt)
blocks on t8103 and t600x. 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 and represented as a sub-node of its syscon.
Signed-off-by: Sven Peter <sven@kernel.org>
---
arch/arm64/boot/dts/apple/t600x-dieX.dtsi | 8 +++++++-
arch/arm64/boot/dts/apple/t602x-dieX.dtsi | 8 +++++++-
arch/arm64/boot/dts/apple/t8103.dtsi | 6 ++++++
arch/arm64/boot/dts/apple/t8112.dtsi | 6 ++++++
4 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/apple/t600x-dieX.dtsi b/arch/arm64/boot/dts/apple/t600x-dieX.dtsi
index 9676d5127039..5e163d756a7f 100644
--- a/arch/arm64/boot/dts/apple/t600x-dieX.dtsi
+++ b/arch/arm64/boot/dts/apple/t600x-dieX.dtsi
@@ -28,7 +28,13 @@ DIE_NODE(pmgr): power-management@28e080000 {
compatible = "apple,t6000-pmgr", "apple,pmgr", "syscon", "simple-mfd";
#address-cells = <1>;
#size-cells = <1>;
- reg = <0x2 0x8e080000 0 0x4000>;
+ reg = <0x2 0x8e080000 0 0x1c000>;
+
+ DIE_NODE(cio_reset): reset-controller@1a034 {
+ compatible = "apple,t6000-cio-reset";
+ reg = <0x1a034 0x4>;
+ #reset-cells = <1>;
+ };
};
DIE_NODE(pmgr_east): power-management@28e580000 {
diff --git a/arch/arm64/boot/dts/apple/t602x-dieX.dtsi b/arch/arm64/boot/dts/apple/t602x-dieX.dtsi
index ae3d535c5acb..fd4d572a04e7 100644
--- a/arch/arm64/boot/dts/apple/t602x-dieX.dtsi
+++ b/arch/arm64/boot/dts/apple/t602x-dieX.dtsi
@@ -27,7 +27,13 @@ DIE_NODE(pmgr): power-management@28e080000 {
compatible = "apple,t6020-pmgr", "apple,t8103-pmgr", "syscon", "simple-mfd";
#address-cells = <1>;
#size-cells = <1>;
- reg = <0x2 0x8e080000 0 0x8000>;
+ reg = <0x2 0x8e080000 0 0xc000>;
+
+ DIE_NODE(cio_reset): reset-controller@a02c {
+ compatible = "apple,t6020-cio-reset", "apple,t6000-cio-reset";
+ reg = <0xa02c 0x4>;
+ #reset-cells = <1>;
+ };
};
DIE_NODE(pmgr_south): power-management@28e680000 {
diff --git a/arch/arm64/boot/dts/apple/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
index da774096b667..83f6f1003424 100644
--- a/arch/arm64/boot/dts/apple/t8103.dtsi
+++ b/arch/arm64/boot/dts/apple/t8103.dtsi
@@ -730,6 +730,12 @@ pmgr: power-management@23b700000 {
reg = <0x2 0x3b700000 0 0x14000>;
};
+ cio_reset: reset-controller@23b784000 {
+ compatible = "apple,t8103-cio-reset";
+ reg = <0x2 0x3b784000 0x0 0x8000>;
+ #reset-cells = <1>;
+ };
+
pinctrl_ap: pinctrl@23c100000 {
compatible = "apple,t8103-pinctrl", "apple,pinctrl";
reg = <0x2 0x3c100000 0x0 0x100000>;
diff --git a/arch/arm64/boot/dts/apple/t8112.dtsi b/arch/arm64/boot/dts/apple/t8112.dtsi
index 85c47422d4e8..d0637c0384b2 100644
--- a/arch/arm64/boot/dts/apple/t8112.dtsi
+++ b/arch/arm64/boot/dts/apple/t8112.dtsi
@@ -737,6 +737,12 @@ pmgr: power-management@23b700000 {
/* child nodes are added in t8103-pmgr.dtsi */
};
+ cio_reset: reset-controller@23b784000 {
+ compatible = "apple,t8112-cio-reset", "apple,t8103-cio-reset";
+ reg = <0x2 0x3b784000 0x0 0x8000>;
+ #reset-cells = <1>;
+ };
+
pinctrl_ap: pinctrl@23c100000 {
compatible = "apple,t8112-pinctrl", "apple,pinctrl";
reg = <0x2 0x3c100000 0x0 0x100000>;
--
2.55.0
prev parent reply other threads:[~2026-08-09 12:16 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
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 ` Sven Peter [this message]
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