ARM: rockchip: add sram dt nodes and documentation

Add dt-nodes for the sram on rk3066 and rk3188 including the reserved section
needed for smp bringup.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Ulrich Prinz <ulrich.prinz@googlemail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi
index 1a26b03b3649..bb36596ea205 100644
--- a/arch/arm/boot/dts/rk3188.dtsi
+++ b/arch/arm/boot/dts/rk3188.dtsi
@@ -60,6 +60,19 @@
                         interrupts = <GIC_PPI 13 0xf04>;
                 };
 
+                sram: sram@10080000 {
+                        compatible = "mmio-sram";
+                        reg = <0x10080000 0x8000>;
+                        #address-cells = <1>;
+                        #size-cells = <1>;
+                        ranges = <0 0x10080000 0x8000>;
+
+                        smp-sram@0 {
+                                compatible = "rockchip,rk3066-smp-sram";
+                                reg = <0x0 0x50>;
+                        };
+                };
+
                 pinctrl@20008000 {
                         compatible = "rockchip,rk3188-pinctrl";
                         reg = <0x20008000 0xa0>,