diff options
| author | Heiko Stuebner <heiko@sntech.de> | 2013-06-17 22:08:31 +0200 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2014-03-01 16:10:07 +0100 |
| commit | de18e01478d3a65112521de04b67e9029b99f55d (patch) | |
| tree | 90ffb480d5be17c1cedebc8a208677edf57e2621 | |
| parent | f6f70cf707a4774d881cc6274c1b53f0e82d2233 (diff) | |
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>
| -rw-r--r-- | Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt | 30 | ||||
| -rw-r--r-- | arch/arm/boot/dts/rk3066a.dtsi | 13 | ||||
| -rw-r--r-- | arch/arm/boot/dts/rk3188.dtsi | 13 |
3 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt b/Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt new file mode 100644 index 000000000000..d9416fb8db6f --- /dev/null +++ b/Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt @@ -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>; + }; + }; diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi index be5d2b09a363..4d4dfbb59f4b 100644 --- a/arch/arm/boot/dts/rk3066a.dtsi +++ b/arch/arm/boot/dts/rk3066a.dtsi @@ -64,6 +64,19 @@ clock-names = "timer", "pclk"; }; + sram: sram@10080000 { + compatible = "mmio-sram"; + reg = <0x10080000 0x10000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x10080000 0x10000>; + + smp-sram@0 { + compatible = "rockchip,rk3066-smp-sram"; + reg = <0x0 0x50>; + }; + }; + pinctrl@20008000 { compatible = "rockchip,rk3066a-pinctrl"; reg = <0x20008000 0x150>; 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>, |