linux-kernel - [PATCH v6 2/5] arm64: dts: imx8mp: Add mu2 root clock

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Message-ID: <20250319094621.2353442-3-daniel.baluta@nxp.com>
Date: Wed, 19 Mar 2025 11:46:18 +0200
From: Daniel Baluta <daniel.baluta@....com>
To: shawnguo@...nel.org,
	robh@...nel.org
Cc: s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	festevam@...il.com,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	frank.li@....com,
	aisheng.dong@....com,
	daniel.baluta@...il.com,
	laurentiu.mihalcea@....com,
	shengjiu.wang@....com,
	iuliana.prodan@....com,
	a.fatoum@...gutronix.de,
	mathieu.poirier@...aro.org,
	linux-remoteproc@...r.kernel.org,
	Daniel Baluta <daniel.baluta@....com>,
	Peng Fan <peng.fan@....com>
Subject: [PATCH v6 2/5] arm64: dts: imx8mp: Add mu2 root clock

Enable MU2 node and add mu2 root clock.
MU2 is used to communicate with DSP core.

Reviewed-by: Iuliana Prodan <iuliana.prodan@....com>
Reviewed-by: Peng Fan <peng.fan@....com>
Signed-off-by: Daniel Baluta <daniel.baluta@....com>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 4 ++++
 arch/arm64/boot/dts/freescale/imx8mp.dtsi    | 1 +
 2 files changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index c26954e5a605..d2fdb420f2d3 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -690,6 +690,10 @@ dsi_out: endpoint {
 	};
 };
 
+&mu2 {
+	status = "okay";
+};
+
 &pcie_phy {
 	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
 	clocks = <&pcie0_refclk>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 3b725fe442d0..deb98f03180a 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -1254,6 +1254,7 @@ mu2: mailbox@...60000 {
 				interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
 				#mbox-cells = <2>;
 				status = "disabled";
+				clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_MU2_ROOT>;
 			};
 
 			i2c5: i2c@...d0000 {
-- 
2.43.0