From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752346AbaAOVnR (ORCPT ); Wed, 15 Jan 2014 16:43:17 -0500 Received: from gloria.sntech.de ([95.129.55.99]:39997 "EHLO gloria.sntech.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751948AbaAOVnO (ORCPT ); Wed, 15 Jan 2014 16:43:14 -0500 From: Heiko =?ISO-8859-1?Q?St=FCbner?= To: "linux-arm-kernel@lists.infradead.org" Cc: arm@kernel.org, Grant Likely , Rob Herring , devicetree@vger.kernel.org, Philipp Zabel , linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Pawel Moll , Mark Rutland , Stephen Warren , Ian Campbell Subject: [PATCH v6 4/6] ARM: rockchip: add sram dt nodes and documentation Date: Wed, 15 Jan 2014 22:42:35 +0100 Message-ID: <2305896.xt7Ek2gLER@phil> User-Agent: KMail/4.11.3 (Linux/3.11-2-amd64; KDE/4.11.3; x86_64; ; ) In-Reply-To: <27256277.YJ687suYy5@phil> References: <27256277.YJ687suYy5@phil> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 | 23 ++++++++++++++++++++ arch/arm/boot/dts/rk3066a.dtsi | 6 +++++ arch/arm/boot/dts/rk3188.dtsi | 6 +++++ 3 files changed, 35 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..80c878e --- /dev/null +++ b/Documentation/devicetree/bindings/arm/rockchip/smp-sram.txt @@ -0,0 +1,23 @@ +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 has to be added to the mmio-sram declaration. + +Required node properties: +- compatible : should contain both "rockchip,rk3066-sram", "mmio-sram" + so that the smp code can select the correct sram node. + +The rest of the properties should follow the generic mmio-sram discription +found in ../../misc/sram.txt + +Example: + + sram: sram@10080000 { + compatible = "rockchip,rk3066-sram", "mmio-sram"; + reg = <0x10080000 0x10000>; + mmio-sram-reserved = <0x0 0x50>; + }; diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi index be5d2b0..0dfb680 100644 --- a/arch/arm/boot/dts/rk3066a.dtsi +++ b/arch/arm/boot/dts/rk3066a.dtsi @@ -64,6 +64,12 @@ clock-names = "timer", "pclk"; }; + sram: sram@10080000 { + compatible = "rockchip,rk3066-sram", "mmio-sram"; + reg = <0x10080000 0x10000>; + mmio-sram-reserved = <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 1a26b03..1fc7eda 100644 --- a/arch/arm/boot/dts/rk3188.dtsi +++ b/arch/arm/boot/dts/rk3188.dtsi @@ -60,6 +60,12 @@ interrupts = ; }; + sram: sram@10080000 { + compatible = "rockchip,rk3066-sram", "mmio-sram"; + reg = <0x10080000 0x8000>; + mmio-sram-reserved = <0x0 0x50>; + }; + pinctrl@20008000 { compatible = "rockchip,rk3188-pinctrl"; reg = <0x20008000 0xa0>, -- 1.7.10.4