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Date:   Thu, 31 Aug 2017 05:16:09 +0000
From:   Sriram Dash <sriram.dash@....com>
To:     Rob Herring <robh@...nel.org>
CC:     "mark.rutland@....com" <mark.rutland@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will.deacon@....com" <will.deacon@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH] arm64: dts: Add support for NXP's LX2160A SoC

>From: Rob Herring [mailto:robh@...nel.org]
>Subject: Re: [PATCH] arm64: dts: Add support for NXP's LX2160A SoC
>
>On Fri, Aug 18, 2017 at 04:25:36PM +0530, Sriram Dash wrote:
>> The QorIQ LX2160A processor is built in the 16FFC process on the
>> Layerscape architecture combining sixteen ARM A72 processor cores with
>> advanced, high-performance datapath acceleration and network,
>> peripheral interfaces required for networking, wireless
>> infrastructure, storage, and general-purpose embedded applications.
>>
>> Features summary:
>>     - Sixteen 32-bit / 64-bit ARM v8 A72 CPUs
>>     - Cache Coherent Interconnect Fabric (CCN508 aka “Eliot”)
>>     - Two 64-bit 3.2GT/s DDR4 SDRAM memory controllers with ECC.
>>     - Data path acceleration architecture (DPAA2)
>>     - 24 Serdes lanes at up to 25 GHz
>>     - Ethernet interfaces
>>       Single WRIOP tile supporting 130Gbps using 18 MACs
>>       Support for 10G-SXGMII (aka USXGMII).
>>       Support for SGMII (and 1000Base-KX)
>>       Support for XFI (and 10GBase-KR)
>>       Support for CAUI4 (100G); CAUI2 (50G) and 25G-AUI(25G).
>>       Support for XLAUI4 (and 40GBase-KR4) for 40G.
>>       Support for two RGMII parallel interfaces.
>>       Energy efficient Ethernet support (802.3az)
>>       IEEE 1588 support.
>>     - High-speed peripheral interfaces
>>       Two PCIe Gen 4.0 8-lane controllers supporting SR-IOV,
>>       Four PCIe Gen 4.0 4-lane controllers.
>>       Four serial ATA (SATA 3.0) controllers.
>>       Two USB 3.0 controllers with integrated PHY
>>       Two Enhanced secure digital host controllers
>>       Two Controller Area Network (CAN) modules
>>       Flexible Serial peripheral interface (FlexSPI) controller.
>>       Three Serial peripheral interface (SPI) controllers.
>>       Nine I2C Controllers.
>>       Four UARTs supporting two 4-pin UART ports or four 2-pin UART ports.
>>       General Purpose IO (GPIO)
>>     - Support for hardware virtualization and partitioning (ARM MMU-500)
>>     - Support for GIC (ARM GIC-500)
>>     - QorIQ platform Trust Architecture 3.0
>>     - One Secure WatchDog timer and one Non-Secure Watchdog timer.
>>     - ARM Generic Timer
>>     - Two Flextimers
>>     - Debug supporting run control, data acquisition, high-speed trace,
>>       performance/event monitoring
>>     - Thermal Monitor Unit (TMU) with +/- 2C accuracy
>>     - Support for Voltage ID (VID) for yield improvement
>>
>> Signed-off-by: Sriram Dash <sriram.dash@....com>
>> ---
>>  Documentation/devicetree/bindings/arm/fsl.txt  |   8 +
>>  arch/arm64/boot/dts/freescale/Makefile         |   1 +
>>  arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 240
>> +++++++++++++++++++++++++
>> arch/arm64/boot/dts/freescale/fsl-lx2qds1.dts  |  54 ++++++
>>  4 files changed, 303 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
>>  create mode 100644 arch/arm64/boot/dts/freescale/fsl-lx2qds1.dts
>>
>> diff --git a/Documentation/devicetree/bindings/arm/fsl.txt
>> b/Documentation/devicetree/bindings/arm/fsl.txt
>> index cdb9dd7..6069434 100644
>> --- a/Documentation/devicetree/bindings/arm/fsl.txt
>> +++ b/Documentation/devicetree/bindings/arm/fsl.txt
>> @@ -218,3 +218,11 @@ Required root node properties:
>>  LS2088A ARMv8 based RDB Board
>>  Required root node properties:
>>      - compatible = "fsl,ls2088a-rdb", "fsl,ls2088a";
>> +
>> +LX2160A SoC
>> +Required root node properties:
>> +    - compatible = "fsl,lx2160a";
>> +
>> +LX2160A ARMv8 based QDS Board
>> +Required root node properties:
>> +    - compatible = "fsl,lx2qds1", "fsl,lx2160a";
>> diff --git a/arch/arm64/boot/dts/freescale/Makefile
>> b/arch/arm64/boot/dts/freescale/Makefile
>> index 72c4b52..634f6d4 100644
>> --- a/arch/arm64/boot/dts/freescale/Makefile
>> +++ b/arch/arm64/boot/dts/freescale/Makefile
>> @@ -12,6 +12,7 @@ dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2080a-rdb.dtb
>>  dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2080a-simu.dtb
>>  dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2088a-qds.dtb
>>  dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2088a-rdb.dtb
>> +dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2qds1.dtb
>>
>>  always		:= $(dtb-y)
>>  subdir-y	:= $(dts-dirs)
>> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
>> b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
>> new file mode 100644
>> index 0000000..48874cf
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
>> @@ -0,0 +1,240 @@
>> +/*
>> + * Device Tree Include file for Layerscape-LX2160A family SoC.
>> + *
>> + * Copyright 2017 NXP
>> + *
>> + * Sriram Dash <sriram.dash@....com>
>> + *
>> + * This file is dual-licensed: you can use it either under the terms
>> + * of the GPLv2 or the X11 license, at your option. Note that this
>> +dual
>> + * licensing only applies to this file, and not this project as a
>> + * whole.
>> + *
>> + *  a) This library is free software; you can redistribute it and/or
>> + *     modify it under the terms of the GNU General Public License as
>> + *     published by the Free Software Foundation; either version 2 of the
>> + *     License, or (at your option) any later version.
>> + *
>> + *     This library is distributed in the hope that it will be useful,
>> + *     but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> + *     GNU General Public License for more details.
>> + *
>> + * Or, alternatively,
>> + *
>> + *  b) Permission is hereby granted, free of charge, to any person
>> + *     obtaining a copy of this software and associated documentation
>> + *     files (the "Software"), to deal in the Software without
>> + *     restriction, including without limitation the rights to use,
>> + *     copy, modify, merge, publish, distribute, sublicense, and/or
>> + *     sell copies of the Software, and to permit persons to whom the
>> + *     Software is furnished to do so, subject to the following
>> + *     conditions:
>> + *
>> + *     The above copyright notice and this permission notice shall be
>> + *     included in all copies or substantial portions of the Software.
>> + *
>> + *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> + *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
>> + *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>> + *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
>> + *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
>> + *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + *     OTHER DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +#include <dt-bindings/interrupt-controller/arm-gic.h>
>> +
>> +/memreserve/ 0x80000000 0x00010000;
>> +
>> +/ {
>> +	compatible = "fsl,lx2160a";
>> +	interrupt-parent = <&gic>;
>> +	#address-cells = <2>;
>> +	#size-cells = <2>;
>> +
>> +	cpus {
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +
>> +		/* We have 8 clusters having 2 Cortex-A72 cores each */
>> +		cpu@0 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x0>;
>> +		};
>> +
>> +		cpu@1 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x1>;
>> +		};
>> +
>> +		cpu@100 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x100>;
>> +		};
>> +
>> +		cpu@101 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x101>;
>> +		};
>> +
>> +		cpu@200 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x200>;
>> +		};
>> +
>> +		cpu@201 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x201>;
>> +		};
>> +
>> +		cpu@300 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x300>;
>> +		};
>> +
>> +		cpu@301 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x301>;
>> +		};
>> +
>> +		cpu@400 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x400>;
>> +		};
>> +
>> +		cpu@401 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x401>;
>> +		};
>> +
>> +		cpu@500 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x500>;
>> +		};
>> +
>> +		cpu@501 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x501>;
>> +		};
>> +
>> +		cpu@600 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x600>;
>> +		};
>> +
>> +		cpu@601 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x601>;
>> +		};
>> +
>> +		cpu@700 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x700>;
>> +		};
>> +
>> +		cpu@701 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a72";
>> +			reg = <0x701>;
>> +		};
>> +
>> +	};
>> +
>> +	memory@...00000 {
>> +		device_type = "memory";
>> +		reg = <0x00000000 0x80000000 0 0x80000000>;
>> +		      /* DRAM space - 1, size : 2 GB DRAM */
>> +	};
>> +
>> +	sysclk: sysclk {
>> +		compatible = "fixed-clock";
>> +		#clock-cells = <0>;
>> +		clock-frequency = <100000000>;
>> +		clock-output-names = "sysclk";
>> +	};
>> +
>> +	gic: interrupt-controller@...0000 {
>> +		compatible = "arm,gic-v3";
>> +		reg = <0x0 0x06000000 0 0x10000>, /* GIC Dist */
>> +		      <0x0 0x06200000 0 0x200000>, /*GICR(RD_base + SGI_base)*/
>> +		      <0x0 0x0c0c0000 0 0x2000>, /* GICC */
>> +		      <0x0 0x0c0d0000 0 0x1000>, /* GICH */
>> +		      <0x0 0x0c0e0000 0 0x20000>; /* GICV */
>> +		#interrupt-cells = <3>;
>> +		#address-cells = <2>;
>> +		#size-cells = <2>;
>
>Both of these can be 1.
>

Ok. Will update in next rev.

>> +		ranges;
>
>It's preferred to have a value here.
>
>> +		interrupt-controller;
>> +		interrupts = <1 9 0x4>;
>> +
>> +		its: gic-its@...0000 {
>> +			compatible = "arm,gic-v3-its";
>> +			msi-controller;
>> +			reg = <0x0 0x6020000 0 0x20000>;
>> +		};
>> +	};
>> +
>> +	timer {
>> +		compatible = "arm,armv8-timer";
>> +		interrupts = <1 13 4>, /* Physical Secure PPI, active-low */
>> +			     <1 14 4>, /* Physical Non-Secure PPI, active-low */
>> +			     <1 11 4>, /* Virtual PPI, active-low */
>> +			     <1 10 4>; /* Hypervisor PPI, active-low */
>> +	};
>> +
>> +	soc {
>> +		compatible = "simple-bus";
>> +		#address-cells = <2>;
>> +		#size-cells = <2>;
>
>These can be 1 if the I/O devices fit into 4GB space.
>

Ok. I checked, it can be be 1. Will update in next version.

>> +		ranges;
>> +
>> +		uart0: serial@...0000 {
>> +			device_type = "serial";
>> +			compatible = "arm,pl011","arm,sbsa-uart";
>> +			reg = <0x0 0x21c0000 0x0 0x1000>;
>> +			interrupts = <0 32 0x4>;
>> +			current-speed = <115200>;
>> +		};
>> +
>> +		uart1: serial@...0000 {
>> +			device_type = "serial";
>> +			compatible = "arm,pl011","arm,sbsa-uart";
>> +			reg = <0x0 0x21d0000 0x0 0x1000>;
>> +			interrupts = <0 33 0x4>;
>> +			current-speed = <115200>;
>> +		};
>> +
>> +		uart2: serial@...0000 {
>> +			device_type = "serial";
>> +			compatible = "arm,pl011","arm,sbsa-uart";
>> +			reg = <0x0 0x21e0000 0x0 0x1000>;
>> +			interrupts = <0 72 0x4>;
>> +			current-speed = <115200>;
>> +		};
>> +
>> +		uart3: serial@...0000 {
>> +			device_type = "serial";
>> +			compatible = "arm,pl011","arm,sbsa-uart";
>> +			reg = <0x0 0x21f0000 0x0 0x1000>;
>> +			interrupts = <0 73 0x4>;
>> +			current-speed = <115200>;
>> +		};
>> +	};
>> +};
>> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2qds1.dts
>> b/arch/arm64/boot/dts/freescale/fsl-lx2qds1.dts
>> new file mode 100644
>> index 0000000..0a8f525
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2qds1.dts
>> @@ -0,0 +1,54 @@
>> +/*
>> + * Device Tree file for LX2 QDS1 Board
>> + *
>> + * Copyright 2017 NXP
>> + *
>> + * Sriram Dash <sriram.dash@....com>
>> + *
>> + * This file is dual-licensed: you can use it either under the terms
>> + * of the GPL or the X11 license, at your option. Note that this dual
>> + * licensing only applies to this file, and not this project as a
>> + * whole.
>> + *
>> + *  a) This library is free software; you can redistribute it and/or
>> + *     modify it under the terms of the GNU General Public License as
>> + *     published by the Free Software Foundation; either version 2 of the
>> + *     License, or (at your option) any later version.
>> + *
>> + *     This library is distributed in the hope that it will be useful,
>> + *     but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> + *     GNU General Public License for more details.
>> + *
>> + * Or, alternatively,
>> + *
>> + *  b) Permission is hereby granted, free of charge, to any person
>> + *     obtaining a copy of this software and associated documentation
>> + *     files (the "Software"), to deal in the Software without
>> + *     restriction, including without limitation the rights to use,
>> + *     copy, modify, merge, publish, distribute, sublicense, and/or
>> + *     sell copies of the Software, and to permit persons to whom the
>> + *     Software is furnished to do so, subject to the following
>> + *     conditions:
>> + *
>> + *     The above copyright notice and this permission notice shall be
>> + *     included in all copies or substantial portions of the Software.
>> + *
>> + *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> + *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
>> + *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>> + *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
>> + *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
>> + *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + *     OTHER DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "fsl-lx2160a.dtsi"
>> +
>> +/ {
>> +	model = "NXP Layerscape LX2 QDS1 Board";
>> +	compatible = "fsl,lx2qds1", "fsl,lx2160a"; };
>> --
>> 1.9.1
>>
>> --
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