[PATCH 3/4] arm64: dts: imx8ulp: add HiFi4 DSP node

[shengjiu.wang at oss.nxp.com]

From: Shengjiu Wang <shengjiu.wang at nxp.com>

Add a HiFi4 DSP node to the i.MX8ULP device tree. The node is
introduced with all required registers, clocks, clock-names,
firmware reference and mailbox connections, but its status is set
to “disabled”. This prepares the SoC for HiFi4 DSP support while
leaving the node inactive until a platform explicitly enables it.

Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
index ac8293f81c6b..fd2c6b9d3c87 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
@@ -8,6 +8,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/power/imx8ulp-power.h>
+#include <dt-bindings/reset/fsl,imx8ulp-sim-lpav.h>
 #include <dt-bindings/thermal/thermal.h>
 
 #include "imx8ulp-pinfunc.h"
@@ -208,6 +209,28 @@ soc: soc at 0 {
 		ranges = <0x0 0x0 0x0 0x40000000>,
 			 <0x60000000 0x0 0x60000000 0x1000000>;
 
+		dsp: dsp at 21170000 {
+			compatible = "fsl,imx8ulp-hifi4";
+			reg = <0x21170000 0x20000>;
+			clocks = <&cgc2 IMX8ULP_CLK_LPAV_BUS_DIV>,
+				 <&cgc2 IMX8ULP_CLK_HIFI_DIVPLAT>,
+				 <&cgc2 IMX8ULP_CLK_HIFI_DIVCORE>,
+				 <&cgc1 IMX8ULP_CLK_DUMMY>,
+				 <&pcc5 IMX8ULP_CLK_MU3_B>;
+			clock-names = "ipg", "ocram", "core", "debug", "mu";
+			firmware-name = "imx/dsp/hifi4.bin";
+			mboxes = <&mu3 0 0>,
+				 <&mu3 1 0>,
+				 <&mu3 3 0>;
+			mbox-names = "tx", "rx", "rxdb";
+			power-domains = <&scmi_devpd IMX8ULP_PD_HIFI4>;
+			resets = <&sim_lpav IMX8ULP_SIM_LPAV_HIFI4_DSP_STALL>,
+				 <&sim_lpav IMX8ULP_SIM_LPAV_HIFI4_DSP_RST>,
+				 <&sim_lpav IMX8ULP_SIM_LPAV_HIFI4_DSP_DBG_RST>;
+			reset-names = "runstall", "softreset", "dbgreset";
+			status = "disabled";
+		};
+
 		s4muap: mailbox at 27020000 {
 			compatible = "fsl,imx8ulp-mu-s4";
 			reg = <0x27020000 0x10000>;
-- 
2.34.1