From de18e01478d3a65112521de04b67e9029b99f55d Mon Sep 17 00:00:00 2001 From: Heiko Stuebner Date: Mon, 17 Jun 2013 22:08:31 +0200 Subject: [PATCH] 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 Tested-by: Ulrich Prinz --- .../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 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 = ; }; + 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>,