linux-brain/arch/arm/boot/dts/arm-realview-pbx-a9.dts
Robin Murphy a20303725e ARM: dts: realview: Fix PBX-A9 cache description
Clearly QEMU is very permissive in how its PL310 model may be set up,
but the real hardware turns out to be far more particular about things
actually being correct. Fix up the DT description so that the real
thing actually boots:

- The arm,data-latency and arm,tag-latency properties need 3 cells to
  be valid, otherwise we end up retaining the default 8-cycle latencies
  which leads pretty quickly to lockup.
- The arm,dirty-latency property is only relevant to L210/L220, so get
  rid of it.
- The cache geometry override also leads to lockup and/or general
  misbehaviour. Irritatingly, the manual doesn't state the actual PL310
  configuration, but based on the boardfile code and poking registers
  from the Boot Monitor, it would seem to be 8 sets of 16KB ways.

With that, we can successfully boot to enjoy the fun of mismatched FPUs...

Cc: stable@vger.kernel.org
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-08-10 22:58:09 +02:00

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/*
* Copyright 2016 Linaro Ltd
*
* 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 "arm-realview-pbx.dtsi"
/ {
/*
* This is the RealView Platform Baseboard Explore for Cortex-A9
* (HBI0182 + HBI0183) as described in ARM DUI 0440B
*/
model = "ARM RealView Platform Baseboard Explore for Cortex-A9";
arm,hbi = <0x182>;
cpus {
#address-cells = <1>;
#size-cells = <0>;
enable-method = "arm,realview-smp";
cpu-map {
cluster0 {
core0 {
cpu = <&CPU0>;
};
core1 {
cpu = <&CPU1>;
};
};
};
CPU0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <0x0>;
next-level-cache = <&L2>;
};
CPU1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <0x1>;
next-level-cache = <&L2>;
};
};
L2: l2-cache {
compatible = "arm,pl310-cache";
reg = <0x1f002000 0x1000>;
cache-unified;
cache-level = <2>;
/*
* Override default cache size, sets and
* associativity as these may be erroneously set
* up by boot loader(s).
*/
cache-size = <131072>; // 128KB
cache-sets = <512>;
cache-line-size = <32>;
arm,parity-disable;
arm,tag-latency = <1 1 1>;
arm,data-latency = <1 1 1>;
};
scu: scu@1f000000 {
compatible = "arm,cortex-a9-scu";
reg = <0x1f000000 0x100>;
};
twd_timer: timer@1f000600 {
compatible = "arm,cortex-a9-twd-timer";
reg = <0x1f000600 0x20>;
interrupt-parent = <&intc>;
interrupts = <1 13 0xf04>;
};
twd_wdog: watchdog@1f000620 {
compatible = "arm,cortex-a9-twd-wdt";
reg = <0x1f000620 0x20>;
interrupt-parent = <&intc>;
interrupts = <1 14 0xf04>;
};
pmu: pmu@0 {
compatible = "arm,cortex-a9-pmu";
interrupt-parent = <&intc>;
interrupts = <0 44 IRQ_TYPE_LEVEL_HIGH>,
<0 45 IRQ_TYPE_LEVEL_HIGH>;
interrupt-affinity = <&CPU0>, <&CPU1>;
};
/* Primary GIC PL390 interrupt controller in the test chip */
intc: interrupt-controller@1f000000 {
compatible = "arm,cortex-a9-gic";
#interrupt-cells = <3>;
#address-cells = <1>;
interrupt-controller;
reg = <0x1f001000 0x1000>,
<0x1f000100 0x100>;
};
};
&ethernet {
interrupt-parent = <&intc>;
interrupts = <0 28 IRQ_TYPE_LEVEL_HIGH>;
};
&usb {
interrupt-parent = <&intc>;
interrupts = <0 29 IRQ_TYPE_LEVEL_HIGH>;
};
&serial0 {
interrupt-parent = <&intc>;
interrupts = <0 12 IRQ_TYPE_LEVEL_HIGH>;
};
&serial1 {
interrupt-parent = <&intc>;
interrupts = <0 13 IRQ_TYPE_LEVEL_HIGH>;
};
&serial2 {
interrupt-parent = <&intc>;
interrupts = <0 14 IRQ_TYPE_LEVEL_HIGH>;
};
&serial3 {
interrupt-parent = <&intc>;
interrupts = <0 15 IRQ_TYPE_LEVEL_HIGH>;
};
&ssp {
interrupt-parent = <&intc>;
interrupts = <0 11 IRQ_TYPE_LEVEL_HIGH>;
};
&wdog0 {
interrupt-parent = <&intc>;
interrupts = <0 0 IRQ_TYPE_LEVEL_HIGH>;
};
&wdog1 {
interrupt-parent = <&intc>;
interrupts = <0 40 IRQ_TYPE_LEVEL_HIGH>;
};
&timer01 {
interrupt-parent = <&intc>;
interrupts = <0 4 IRQ_TYPE_LEVEL_HIGH>;
};
&timer23 {
interrupt-parent = <&intc>;
interrupts = <0 5 IRQ_TYPE_LEVEL_HIGH>;
};
&gpio0 {
interrupt-parent = <&intc>;
interrupts = <0 6 IRQ_TYPE_LEVEL_HIGH>;
};
&gpio1 {
interrupt-parent = <&intc>;
interrupts = <0 7 IRQ_TYPE_LEVEL_HIGH>;
};
&gpio2 {
interrupt-parent = <&intc>;
interrupts = <0 8 IRQ_TYPE_LEVEL_HIGH>;
};
&rtc {
interrupt-parent = <&intc>;
interrupts = <0 10 IRQ_TYPE_LEVEL_HIGH>;
};
&timer45 {
interrupt-parent = <&intc>;
interrupts = <0 41 IRQ_TYPE_LEVEL_HIGH>;
};
&timer67 {
interrupt-parent = <&intc>;
interrupts = <0 42 IRQ_TYPE_LEVEL_HIGH>;
};
&aaci {
interrupt-parent = <&intc>;
interrupts = <0 19 IRQ_TYPE_LEVEL_HIGH>;
};
&mmc {
interrupt-parent = <&intc>;
interrupts = <0 17 IRQ_TYPE_LEVEL_HIGH>,
<0 18 IRQ_TYPE_LEVEL_HIGH>;
};
&kmi0 {
interrupt-parent = <&intc>;
interrupts = <0 20 IRQ_TYPE_LEVEL_HIGH>;
};
&kmi1 {
interrupt-parent = <&intc>;
interrupts = <0 21 IRQ_TYPE_LEVEL_HIGH>;
};
&clcd {
interrupt-parent = <&intc>;
interrupts = <0 23 IRQ_TYPE_LEVEL_HIGH>;
};