linux-kernel - [PATCH 5/9] arm64: dts: exynosautov920: Add ABOX IPC Generic device node

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Message-Id: <20250721023052.3586000-6-ew.kim@samsung.com>
Date: Mon, 21 Jul 2025 11:30:48 +0900
From: ew kim <ew.kim@...sung.com>
To: broonie@...nel.org, s.nawrocki@...sung.com, robh@...nel.org,
	krzk+dt@...nel.org
Cc: lgirdwood@...il.com, tiwai@...e.com, perex@...ex.cz,
	conor+dt@...nel.org, alim.akhtar@...sung.com, linux-sound@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, ew kim
	<ew.kim@...sung.com>
Subject: [PATCH 5/9] arm64: dts: exynosautov920: Add ABOX IPC Generic device
 node

This patch adds a new child node `abox_ipc_generic` under the
`abox_generic` node for ExynosAuto v920. The ABOX IPC Generic
driver handles inter-processor communication (IPC) between
the ABOX DSP and host SoC using IRQs.

The node includes configuration for the number of IRQ channels
used for IPC routing. This allows SoC-specific subsystems to
send and receive messages through the ABOX generic audio stack.

Signed-off-by: ew kim <ew.kim@...sung.com>
---
 arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts |  6 +++++-
 arch/arm64/boot/dts/exynos/exynosautov920.dtsi     | 10 ++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts b/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts
index a870c0b6847f..2f4cf112675a 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts
+++ b/arch/arm64/boot/dts/exynos/exynosautov920-sadk.dts
@@ -89,4 +89,8 @@ &xtcxo {
 
 &abox_generic {
 	status = "okay";
-};
\ No newline at end of file
+};
+
+&abox_ipc_generic {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
index 4f086a7a79c8..21bcbcf7e2b6 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
@@ -1133,8 +1133,14 @@ abox_generic: abox_generic {
 		samsung,num-pcm-capture = <32>;
 		samsung,num-i2s-dummy-backend = <5>;
 		status = "disabled";
-		#address-cells = <2>;
-		#size-cells = <1>;
+		/* #address-cells = <2>; */
+		/* #size-cells = <1>; */
+
+		abox_ipc_generic: abox_ipc_generic {
+			compatible = "samsung,abox_ipc_generic";
+			samsung,num-irq = <64>;
+			status = "disabled";
+		};
 	};
 };
 
-- 
2.25.1