ARM: rockchip: add sram dt nodes and documentation
From: Heiko Stuebner <heiko@...> Date: Mon, 17 Jun 2013 22:08:31 +0200
Commit-Message
Add dt-nodes for the sram on rk3066 and rk3188 including the reserved section needed for smp bringup. Signed-off-by: Heiko Stuebner <heiko@...> Tested-by: Ulrich Prinz <ulrich.prinz@...>
Patch-Comment
.../devicetree/bindings/arm/rockchip/smp-sram.txt | 30 ++++++++++++++++++++++ arch/arm/boot/dts/rk3066a.dtsi | 13 ++++++++++ arch/arm/boot/dts/rk3188.dtsi | 13 ++++++++++ 3 files changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt
Statistics
- 56 lines added
- 0 lines removed
Changes
--------- Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt ----------
new file mode 100644
index 0000000..d9416fb
@@ -0,0 +1,30 @@
+Rockchip SRAM for smp bringup:
+------------------------------
+
+Rockchip's smp-capable SoCs use the first part of the sram for the bringup
+of the cores. Once the core gets powered up it executes the code that is
+residing at the very beginning of the sram.
+
+Therefore a reserved section sub-node has to be added to the mmio-sram
+declaration.
+
+Required sub-node properties:
+- compatible : should be "rockchip,rk3066-smp-sram"
+
+The rest of the properties should follow the generic mmio-sram discription
+found in ../../misc/sram.txt
+
+Example:
+
+ sram: sram@10080000 {
+ compatible = "mmio-sram";
+ reg = <0x10080000 0x10000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ smp-sram@10080000 {
+ compatible = "rockchip,rk3066-smp-sram";
+ reg = <0x10080000 0x50>;
+ };
+ };
------------------------ arch/arm/boot/dts/rk3066a.dtsi ------------------------
index be5d2b0..37d0768 100644
@@ -64,6 +64,19 @@
clock-names = "timer", "pclk";
};
+ sram: sram@10080000 {
+ compatible = "mmio-sram";
+ reg = <0x10080000 0x10000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ smp-sram@10080000 {
+ compatible = "rockchip,rk3066-smp-sram";
+ reg = <0x10080000 0x50>;
+ };
+ };
+
pinctrl@20008000 {
compatible = "rockchip,rk3066a-pinctrl";
reg = <0x20008000 0x150>;
------------------------ arch/arm/boot/dts/rk3188.dtsi -------------------------
index 1a26b03..412f4d0 100644
@@ -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;
+
+ smp-sram@10080000 {
+ compatible = "rockchip,rk3066-smp-sram";
+ reg = <0x10080000 0x50>;
+ };
+ };
+
pinctrl@20008000 {
compatible = "rockchip,rk3188-pinctrl";
reg = <0x20008000 0xa0>,