[PATCH 9/9] arm64: dts: imx93-kontron: Enable ELE firmware driver

[Frieder Schrempf]

From: Frieder Schrempf <frieder.schrempf at kontron.de>

Add the ELE firmware API node and pass its handle to the OCOTP
driver. This allows us to gain read/write access to the OTP fuses.

Signed-off-by: Frieder Schrempf <frieder.schrempf at kontron.de>
---
 .../boot/dts/freescale/imx93-kontron-osm-s.dtsi    | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi b/arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi
index c79b1df339db..c1da4b52c878 100644
--- a/arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi
@@ -24,6 +24,15 @@ chosen {
 		stdout-path = &lpuart1;
 	};
 
+	firmware {
+		hsm0: secure-enclave {
+			compatible = "fsl,imx93-se-ele-hsm";
+			mbox-names = "tx", "rx";
+			mboxes = <&s4muap 0 0>, <&s4muap 1 0>;
+			memory-region = <&ele_memory>;
+		};
+	};
+
 	reg_usdhc2_vcc: regulator-usdhc2-vcc {
 		compatible = "regulator-fixed";
 		pinctrl-names = "default";
@@ -57,6 +66,19 @@ regulator-state-disk {
 			regulator-off-in-suspend;
 		};
 	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		ele_memory: ele-memory {
+			compatible = "shared-dma-pool";
+			alloc-ranges = <0 0x80000000 0 0x40000000>;
+			size = <0 0x100000>;
+			no-map;
+		};
+	};
 };
 
 &flexcan1 { /* OSM-S CAN_A */
@@ -253,6 +275,10 @@ &lpuart7 { /* OSM-S UART_A */
 	pinctrl-0 = <&pinctrl_lpuart7>;
 };
 
+&ocotp {
+	secure-enclave = <&hsm0>;
+};
+
 &tpm3 { /* OSM-S PWM_0 */
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_tpm3>;

-- 
2.54.0