Commit 99ff1830 authored by Olof Johansson's avatar Olof Johansson
Browse files

Merge tag 'keystone-soc-for-arm-soc' of... 

Merge tag 'keystone-soc-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into next/soc

From Santosh Shilimkar:
SOC support for Keystone II devices:
- Minimal machine and device-tree support with arch_timers and console UART
- Reboot hook using PLL reset
- Low level debug support using UART
- SMP boot support

* tag 'keystone-soc-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone

:
  ARM: keystone: Enable SMP support on Keystone machines
  ARM: keystone: Add minimal TI Keystone platform support
  ARM: dts: keystone: Add minimal Keystone SOC device tree data

Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parents 7bf15412 f07cb6a0

Documentation/devicetree/bindings/arm/keystone/keystone.txt

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TI Keystone Platforms Device Tree Bindings

-----------------------------------------------



Boards with Keystone2 based devices (TCI66xxK2H) SOC shall have the

following properties.



Required properties:

 - compatible: All TI specific devices present in Keystone SOC should be in

   the form "ti,keystone-*". Generic devices like gic, arch_timers, ns16550

   type UART should use the specified compatible for those devices.

arch/arm/Kconfig

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@@ -950,6 +950,8 @@ source "arch/arm/mach-iop13xx/Kconfig" 


source "arch/arm/mach-ixp4xx/Kconfig"



source "arch/arm/mach-keystone/Kconfig"



source "arch/arm/mach-kirkwood/Kconfig"



source "arch/arm/mach-ks8695/Kconfig"
@@ -1562,6 +1564,7 @@ config ARCH_NR_GPIO 
	int

	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA

	default 512 if SOC_OMAP5

	default 512 if ARCH_KEYSTONE

	default 392 if ARCH_U8500

	default 352 if ARCH_VT8500

	default 288 if ARCH_SUNXI

arch/arm/Kconfig.debug

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@@ -251,6 +251,20 @@ choice 
		  Say Y here if you want kernel low-level debugging support

		  on i.MX6Q/DL.



	config DEBUG_KEYSTONE_UART0

		bool "Kernel low-level debugging on KEYSTONE2 using UART0"

		depends on ARCH_KEYSTONE

		help

		  Say Y here if you want the debug print routines to direct

		  their output to UART0 serial port on KEYSTONE2 devices.



	config DEBUG_KEYSTONE_UART1

		bool "Kernel low-level debugging on KEYSTONE2 using UART1"

		depends on ARCH_KEYSTONE

		help

		  Say Y here if you want the debug print routines to direct

		  their output to UART1 serial port on KEYSTONE2 devices.



	config DEBUG_MMP_UART2

		bool "Kernel low-level debugging message via MMP UART2"

		depends on ARCH_MMP
@@ -657,6 +671,8 @@ config DEBUG_LL_INCLUDE 
				 DEBUG_IMX51_UART || \

				 DEBUG_IMX53_UART ||\

				 DEBUG_IMX6Q_UART

	default "debug/keystone.S" if DEBUG_KEYSTONE_UART0 || \

				      DEBUG_KEYSTONE_UART1

	default "debug/mvebu.S" if DEBUG_MVEBU_UART || \

				   DEBUG_MVEBU_UART_ALTERNATE

	default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART

arch/arm/Makefile

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@@ -195,6 +195,7 @@ machine-$(CONFIG_PLAT_SPEAR) += spear 
machine-$(CONFIG_ARCH_VIRT)		+= virt

machine-$(CONFIG_ARCH_ZYNQ)		+= zynq

machine-$(CONFIG_ARCH_SUNXI)		+= sunxi

machine-$(CONFIG_ARCH_KEYSTONE)		+= keystone



# Platform directory name.  This list is sorted alphanumerically

# by CONFIG_* macro name.

arch/arm/boot/dts/keystone.dts

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/*

 * Copyright 2013 Texas Instruments, Inc.

 *

 * 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.

 */



/dts-v1/;

/include/ "skeleton.dtsi"



/ {

	model = "Texas Instruments Keystone 2 SoC";

	compatible =  "ti,keystone-evm";

	#address-cells = <2>;

	#size-cells = <2>;

	interrupt-parent = <&gic>;



	aliases {

		serial0	= &uart0;

	};



	memory {

		reg = <0x00000000 0x80000000 0x00000000 0x40000000>;

	};



	cpus {

		#address-cells = <1>;

		#size-cells = <0>;



		interrupt-parent = <&gic>;



		cpu@0 {

			compatible = "arm,cortex-a15";

			device_type = "cpu";

			reg = <0>;

		};



		cpu@1 {

			compatible = "arm,cortex-a15";

			device_type = "cpu";

			reg = <1>;

		};



		cpu@2 {

			compatible = "arm,cortex-a15";

			device_type = "cpu";

			reg = <2>;

		};



		cpu@3 {

			compatible = "arm,cortex-a15";

			device_type = "cpu";

			reg = <3>;

		};

	};



	gic: interrupt-controller {

		compatible = "arm,cortex-a15-gic";

		#interrupt-cells = <3>;

		#size-cells = <0>;

		#address-cells = <1>;

		interrupt-controller;

		reg = <0x0 0x02561000 0x0 0x1000>,

		      <0x0 0x02562000 0x0 0x2000>;

	};



	timer {

		compatible = "arm,armv7-timer";

		interrupts = <1 13 0xf08>,

			     <1 14 0xf08>,

			     <1 11 0xf08>,

			     <1 10 0x308>;

	};



	pmu {

		compatible = "arm,cortex-a15-pmu";

		interrupts = <0 20 0xf01>,

			     <0 21 0xf01>,

			     <0 22 0xf01>,

			     <0 23 0xf01>;

	};



	soc {

		#address-cells = <1>;

		#size-cells = <1>;

		compatible = "ti,keystone","simple-bus";

		interrupt-parent = <&gic>;

		ranges = <0x0 0x0 0x0 0xc0000000>;



		rstctrl: reset-controller {

			compatible = "ti,keystone-reset";

			reg = <0x023100e8 4>;	/* pll reset control reg */

		};



		uart0: serial@02530c00 {

			compatible = "ns16550a";

			current-speed = <115200>;

			reg-shift = <2>;

			reg-io-width = <4>;

			reg = <0x02530c00 0x100>;

			clock-frequency = <133120000>;

			interrupts = <0 277 0xf01>;

		};



		uart1:	serial@02531000 {

			compatible = "ns16550a";

			current-speed = <115200>;

			reg-shift = <2>;

			reg-io-width = <4>;

			reg = <0x02531000 0x100>;

			clock-frequency = <133120000>;

			interrupts = <0 280 0xf01>;

		};



	};

};

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