ARM: dts: meson: add a node which describes the SRAM

All 32bit Meson SoCs contain 128KiB SRAM. This SRAM is used when
suspending the device (the the ARM Power Firmware on
Meson8/Meson8b/Meson8m2 saves the DDR settings there) and to boot the
secondary CPU cores.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi
index 4c27ca083afbf8adadfc07e5c8cf06d91a6278b5..7e136991a4b939a3681cbe65855472bfe473e6fa 100644 (file)
--- a/arch/arm/boot/dts/meson.dtsi
+++ b/arch/arm/boot/dts/meson.dtsi
@@ -244,5 +244,13 @@
                        interrupt-names = "macirq";
                        status = "disabled";
                };
+
+               ahb_sram: sram@d9000000 {
+                       compatible = "mmio-sram";
+                       reg = <0xd9000000 0x20000>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       ranges = <0 0xd9000000 0x20000>;
+               };
        };
 }; /* end of / */