From d9fda07af7fbb989cf68ba7d2f370320f05664d8 Mon Sep 17 00:00:00 2001 From: Benoit Cousson Date: Tue, 9 Aug 2011 17:15:17 +0200 Subject: [PATCH] arm/dts: Add initial device tree support for OMAP4 SoC Add initial device-tree support for OMAP4 SoC. This is based on the original panda board patch done by Manju: http://permalink.gmane.org/gmane.linux.ports.arm.omap/60393 Add the generic GIC interrupt-controller from ARM. Add an empty "soc" node to contain non memory mapped IPs (DSP, MPU, IPU...). Note: Since reg, irq and dma are provided by hwmod for the moment, these attributes will not be present at all in DTS to highlight the gap. They will be added as soon as dma bindings will be there and drivers will be adapted. Signed-off-by: Benoit Cousson Acked-by: Grant Likely Cc: G, Manjunath Kondaiah --- arch/arm/boot/dts/omap4.dtsi | 79 ++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 arch/arm/boot/dts/omap4.dtsi diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi new file mode 100644 index 000000000000..d4131e36aefb --- /dev/null +++ b/arch/arm/boot/dts/omap4.dtsi @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * Carveout for multimedia usecases + * It should be the last 48MB of the first 512MB memory part + * In theory, it should not even exist. That zone should be reserved + * dynamically during the .reserve callback. + */ +/memreserve/ 0x9d000000 0x03000000; + +/include/ "skeleton.dtsi" + +/ { + compatible = "ti,omap4430", "ti,omap4"; + interrupt-parent = <&gic>; + + aliases { + }; + + /* + * The soc node represents the soc top level view. It is uses for IPs + * that are not memory mapped in the MPU view or for the MPU itself. + */ + soc { + compatible = "ti,omap-infra"; + }; + + /* + * XXX: Use a flat representation of the OMAP4 interconnect. + * The real OMAP interconnect network is quite complex. + * + * MPU -+-- MPU_PRIVATE - GIC, L2 + * | + * +----------------+----------+ + * | | | + * + +- EMIF - DDR | + * | | | + * | + +--------+ + * | | | + * | +- L4_ABE - AESS, MCBSP, TIMERs... + * | | + * +- L3_MAIN --+- L4_CORE - IPs... + * | + * +- L4_PER - IPs... + * | + * +- L4_CFG -+- L4_WKUP - IPs... + * | | + * | +- IPs... + * +- IPU ----+ + * | | + * +- DSP ----+ + * | | + * +- DSS ----+ + * + * Since that will not bring real advantage to represent that in DT for + * the moment, just use a fake OCP bus entry to represent the whole bus + * hierarchy. + */ + ocp { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + gic: interrupt-controller@48241000 { + compatible = "arm,cortex-a9-gic"; + interrupt-controller; + #interrupt-cells = <1>; + reg = <0x48241000 0x1000>, + <0x48240100 0x0100>; + }; + }; +}; -- 2.20.1