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The Armada XP provides a mechanism called "virtual CPU registers" or
"per-CPU register banking", to access the per-CPU registers of the
current CPU, without having to worry about finding on which CPU we're
running. CPU0 has its registers at 0x21800, CPU1 at 0x21900, CPU2 at
0x21A00 and CPU3 at 0x21B00. The virtual registers accessing the
current CPU registers are at 0x21000.
However, in the Device Tree node that provides the register addresses
for the coherency unit (which is responsible for ensuring coherency
between processors, and I/O coherency between processors and the
DMA-capable devices), a mistake was made: the CPU0-specific registers
were specified instead of the virtual CPU registers. This means that
the coherency barrier needed for I/O coherency was not behaving
properly when executed from a CPU different from CPU0. This patch
fixes that by using the virtual CPU registers.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: <stable@vger.kernel.org> # v3.8+
Fixes: e60304f8cb "arm: mvebu: Add hardware I/O Coherency support"
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
272 lines
6.0 KiB
Plaintext
272 lines
6.0 KiB
Plaintext
/*
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* Device Tree Include file for Marvell Armada 370 and Armada XP SoC
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*
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* Copyright (C) 2012 Marvell
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*
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* Lior Amsalem <alior@marvell.com>
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* Gregory CLEMENT <gregory.clement@free-electrons.com>
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* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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* Ben Dooks <ben.dooks@codethink.co.uk>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*
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* This file contains the definitions that are common to the Armada
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* 370 and Armada XP SoC.
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*/
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/include/ "skeleton64.dtsi"
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#define MBUS_ID(target,attributes) (((target) << 24) | ((attributes) << 16))
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/ {
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model = "Marvell Armada 370 and XP SoC";
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compatible = "marvell,armada-370-xp";
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aliases {
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eth0 = ð0;
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eth1 = ð1;
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};
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cpus {
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#address-cells = <1>;
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#size-cells = <0>;
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cpu@0 {
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compatible = "marvell,sheeva-v7";
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device_type = "cpu";
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reg = <0>;
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};
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};
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soc {
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#address-cells = <2>;
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#size-cells = <1>;
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controller = <&mbusc>;
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interrupt-parent = <&mpic>;
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pcie-mem-aperture = <0xe0000000 0x8000000>;
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pcie-io-aperture = <0xe8000000 0x100000>;
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devbus-bootcs {
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compatible = "marvell,mvebu-devbus";
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reg = <MBUS_ID(0xf0, 0x01) 0x10400 0x8>;
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ranges = <0 MBUS_ID(0x01, 0x2f) 0 0xffffffff>;
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#address-cells = <1>;
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#size-cells = <1>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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devbus-cs0 {
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compatible = "marvell,mvebu-devbus";
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reg = <MBUS_ID(0xf0, 0x01) 0x10408 0x8>;
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ranges = <0 MBUS_ID(0x01, 0x3e) 0 0xffffffff>;
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#address-cells = <1>;
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#size-cells = <1>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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devbus-cs1 {
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compatible = "marvell,mvebu-devbus";
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reg = <MBUS_ID(0xf0, 0x01) 0x10410 0x8>;
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ranges = <0 MBUS_ID(0x01, 0x3d) 0 0xffffffff>;
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#address-cells = <1>;
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#size-cells = <1>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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devbus-cs2 {
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compatible = "marvell,mvebu-devbus";
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reg = <MBUS_ID(0xf0, 0x01) 0x10418 0x8>;
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ranges = <0 MBUS_ID(0x01, 0x3b) 0 0xffffffff>;
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#address-cells = <1>;
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#size-cells = <1>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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devbus-cs3 {
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compatible = "marvell,mvebu-devbus";
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reg = <MBUS_ID(0xf0, 0x01) 0x10420 0x8>;
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ranges = <0 MBUS_ID(0x01, 0x37) 0 0xffffffff>;
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#address-cells = <1>;
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#size-cells = <1>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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internal-regs {
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compatible = "simple-bus";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0 MBUS_ID(0xf0, 0x01) 0 0x100000>;
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mbusc: mbus-controller@20000 {
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compatible = "marvell,mbus-controller";
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reg = <0x20000 0x100>, <0x20180 0x20>;
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};
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mpic: interrupt-controller@20000 {
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compatible = "marvell,mpic";
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#interrupt-cells = <1>;
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#size-cells = <1>;
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interrupt-controller;
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msi-controller;
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};
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coherency-fabric@20200 {
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compatible = "marvell,coherency-fabric";
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reg = <0x20200 0xb0>, <0x21010 0x1c>;
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};
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serial@12000 {
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compatible = "snps,dw-apb-uart";
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reg = <0x12000 0x100>;
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reg-shift = <2>;
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interrupts = <41>;
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reg-io-width = <1>;
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status = "disabled";
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};
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serial@12100 {
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compatible = "snps,dw-apb-uart";
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reg = <0x12100 0x100>;
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reg-shift = <2>;
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interrupts = <42>;
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reg-io-width = <1>;
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status = "disabled";
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};
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coredivclk: corediv-clock@18740 {
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compatible = "marvell,armada-370-corediv-clock";
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reg = <0x18740 0xc>;
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#clock-cells = <1>;
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clocks = <&mainpll>;
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clock-output-names = "nand";
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};
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timer@20300 {
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reg = <0x20300 0x30>, <0x21040 0x30>;
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interrupts = <37>, <38>, <39>, <40>, <5>, <6>;
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};
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sata@a0000 {
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compatible = "marvell,orion-sata";
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reg = <0xa0000 0x5000>;
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interrupts = <55>;
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clocks = <&gateclk 15>, <&gateclk 30>;
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clock-names = "0", "1";
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status = "disabled";
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};
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "marvell,orion-mdio";
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reg = <0x72004 0x4>;
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};
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eth0: ethernet@70000 {
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compatible = "marvell,armada-370-neta";
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reg = <0x70000 0x4000>;
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interrupts = <8>;
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clocks = <&gateclk 4>;
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status = "disabled";
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};
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eth1: ethernet@74000 {
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compatible = "marvell,armada-370-neta";
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reg = <0x74000 0x4000>;
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interrupts = <10>;
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clocks = <&gateclk 3>;
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status = "disabled";
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};
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i2c0: i2c@11000 {
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compatible = "marvell,mv64xxx-i2c";
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#address-cells = <1>;
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#size-cells = <0>;
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interrupts = <31>;
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timeout-ms = <1000>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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i2c1: i2c@11100 {
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compatible = "marvell,mv64xxx-i2c";
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#address-cells = <1>;
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#size-cells = <0>;
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interrupts = <32>;
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timeout-ms = <1000>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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rtc@10300 {
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compatible = "marvell,orion-rtc";
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reg = <0x10300 0x20>;
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interrupts = <50>;
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};
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mvsdio@d4000 {
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compatible = "marvell,orion-sdio";
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reg = <0xd4000 0x200>;
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interrupts = <54>;
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clocks = <&gateclk 17>;
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bus-width = <4>;
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cap-sdio-irq;
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cap-sd-highspeed;
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cap-mmc-highspeed;
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status = "disabled";
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};
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usb@50000 {
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compatible = "marvell,orion-ehci";
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reg = <0x50000 0x500>;
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interrupts = <45>;
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status = "disabled";
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};
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usb@51000 {
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compatible = "marvell,orion-ehci";
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reg = <0x51000 0x500>;
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interrupts = <46>;
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status = "disabled";
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};
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spi0: spi@10600 {
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compatible = "marvell,orion-spi";
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reg = <0x10600 0x28>;
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#address-cells = <1>;
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#size-cells = <0>;
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cell-index = <0>;
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interrupts = <30>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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spi1: spi@10680 {
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compatible = "marvell,orion-spi";
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reg = <0x10680 0x28>;
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#address-cells = <1>;
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#size-cells = <0>;
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cell-index = <1>;
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interrupts = <92>;
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clocks = <&coreclk 0>;
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status = "disabled";
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};
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};
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};
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clocks {
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/* 2 GHz fixed main PLL */
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mainpll: mainpll {
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compatible = "fixed-clock";
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#clock-cells = <0>;
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clock-frequency = <2000000000>;
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};
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};
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};
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