From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko =?ISO-8859-1?Q?St=FCbner?= Subject: [PATCH v8 4/6] ARM: rockchip: add sram dt nodes and documentation Date: Tue, 25 Feb 2014 12:47:42 +0100 Message-ID: <4021819.DsUjhG2Ihi@phil> References: <21117503.1c6iOkvYSr@phil> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: <21117503.1c6iOkvYSr@phil> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" Cc: arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, Grant Likely , Rob Herring , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Philipp Zabel , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Greg Kroah-Hartman , Pawel Moll , Mark Rutland , Stephen Warren , Ian Campbell List-Id: devicetree@vger.kernel.org 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 --- .../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 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 0000000..d9416fb --- /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 be5d2b0..37d0768 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; + + smp-sram@10080000 { + compatible = "rockchip,rk3066-smp-sram"; + reg = <0x10080000 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 1a26b03..412f4d0 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; + + smp-sram@10080000 { + compatible = "rockchip,rk3066-smp-sram"; + reg = <0x10080000 0x50>; + }; + }; + pinctrl@20008000 { compatible = "rockchip,rk3188-pinctrl"; reg = <0x20008000 0xa0>, -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html