arm64: dts: ti: k3-j721e: Add the MCU SRAM node

Add the on-chip SRAM present within the MCU domain as a mmio-sram node.
The K3 J721E SoCs have 1 MB of such memory. Any specific memory range
within this RAM needed by a driver/software module ought to be reserved
using an appropriate child node.

Signed-off-by: Suman Anna <[email protected]>
Signed-off-by: Tero Kristo <[email protected]>

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi
index 285f5b4412ebf77605c98c6dc129043248bfbb1b..07b58eeebceb0ba91e8845c608e4fb8f25cec11f 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi
@@ -43,6 +43,14 @@
                pinctrl-single,function-mask = <0xffffffff>;
        };
 
+       mcu_ram: sram@41c00000 {
+               compatible = "mmio-sram";
+               reg = <0x00 0x41c00000 0x00 0x100000>;
+               ranges = <0x0 0x00 0x41c00000 0x100000>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+       };
+
        wkup_uart0: serial@42300000 {
                compatible = "ti,j721e-uart", "ti,am654-uart";
                reg = <0x00 0x42300000 0x00 0x100>;