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From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Stefan Agner <stefan@agner.ch>,
	shawn.guo@linaro.org, kernel@pengutronix.de,
	linux@arm.linux.org.uk, u.kleine-koenig@pengutronix.de,
	jason@lakedaemon.net, olof@lixom.net, daniel.lezcano@linaro.org,
	tglx@linutronix.de, mark.rutland@arm.com, pawel.moll@arm.com,
	robh+dt@kernel.org, ijc+devicetree@hellion.org.uk,
	galak@codeaurora.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 11/12] ARM: dts: add support for Vybrid running on Cortex-M4
Date: Wed, 03 Dec 2014 12:03:37 +0100	[thread overview]
Message-ID: <2994970.DCfUQgtmcD@wuerfel> (raw)
In-Reply-To: <1417565531-4507-12-git-send-email-stefan@agner.ch>

On Wednesday 03 December 2014 01:12:10 Stefan Agner wrote:
> diff --git a/arch/arm/boot/dts/vf610m4-colibri.dts b/arch/arm/boot/dts/vf610m4-colibri.dts
> new file mode 100644
> index 0000000..051ee0f
> --- /dev/null
> +++ b/arch/arm/boot/dts/vf610m4-colibri.dts
> @@ -0,0 +1,52 @@
> +/*
> + * Device tree for Colibri VF61 Cortex-M4 support
> + *
> + * Copyright 2014 Stefan Agner
> + *
> + * This program 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.
> + */
> +
> +/dts-v1/;
> +#include "vf610m4.dtsi"
> +
> +/ {
> +       model = "VF610 Cortex-M4";
> +       compatible = "fsl,vf610m4";
> +
> +       chosen {
> +               bootargs = "console=ttyLP2,115200 ihash_entries=64 dhash_entries=64 earlyprintk clk_ignore_unused init=/linuxrc rw";
> +       };
> +

Starting with v3.19, you should be able to use the earlycon framework on
arm32, so it would be better to replace earlyprintk with earlycon here
and add a stdout-path property in chosen that points to the console
uart.

64 hash table entries sounds extremely small, doesn't that impact
performance? If you have 50MB of actual RAM available, I don't think
you need that.

	Arnd

  reply	other threads:[~2014-12-03 11:04 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-03  0:11 [PATCH 00/12] ARM: vf610m4: Add Vybrid Cortex-M4 support Stefan Agner
2014-12-03  0:12 ` [PATCH 01/12] ARM: dts: vf610: add routable-irqs property for gic node Stefan Agner
2014-12-03  0:12 ` [PATCH 02/12] ARM: dts: vf610: add Miscellaneous System Control Module (MSCM) Stefan Agner
2014-12-03  0:12 ` [PATCH 03/12] irqchip: gic: define register_routable_domain_ops conditional Stefan Agner
2014-12-03 10:46   ` Arnd Bergmann
2014-12-03 13:04     ` Thomas Gleixner
2014-12-03 17:28       ` Stefan Agner
2014-12-03 19:04         ` Marc Zyngier
2014-12-04  0:03           ` Thomas Gleixner
2014-12-04 13:35           ` Stefan Agner
2014-12-04 13:42             ` Marc Zyngier
2014-12-04 13:50               ` Stefan Agner
2014-12-03  0:12 ` [PATCH 04/12] irqchip: nvic: support routable irq domain ops Stefan Agner
2014-12-03  9:39   ` Uwe Kleine-König
2014-12-03 10:49   ` Arnd Bergmann
2014-12-03 17:32     ` Stefan Agner
2014-12-03  0:12 ` [PATCH 05/12] irqchip: nvic: increase number of external interrupts to 112 Stefan Agner
2014-12-03  8:12   ` Uwe Kleine-König
2014-12-03 17:40     ` Stefan Agner
2014-12-03  0:12 ` [PATCH 06/12] ARM: imx: add support for MSCM interrupt router Stefan Agner
2014-12-03 10:51   ` Arnd Bergmann
2014-12-03  0:12 ` [PATCH 07/12] Documentation: dt: imx: add MSCM documentation Stefan Agner
2014-12-03 10:52   ` Arnd Bergmann
2014-12-03 17:49     ` Stefan Agner
2014-12-03  0:12 ` [PATCH 08/12] clocksource: add dependencies for Vybrid pit clocksource Stefan Agner
2014-12-03  0:12 ` [PATCH 09/12] ARM: unify MMU/!MMU addruart calls Stefan Agner
2014-12-03 10:53   ` Arnd Bergmann
2014-12-03  0:12 ` [PATCH 10/12] ARM: vf610m4: add new machine and SoC for Vybrid on Cortex-M4 Stefan Agner
2014-12-03 10:56   ` Arnd Bergmann
2014-12-03 18:00     ` Stefan Agner
2014-12-03  0:12 ` [PATCH 11/12] ARM: dts: add support for Vybrid running " Stefan Agner
2014-12-03 11:03   ` Arnd Bergmann [this message]
2014-12-16 22:19     ` Stefan Agner
2014-12-17 10:57       ` Arnd Bergmann
2014-12-16 23:41     ` Stefan Agner
2014-12-17 12:31       ` Arnd Bergmann
2014-12-18 20:36         ` Stefan Agner
2014-12-18 22:44           ` Arnd Bergmann
2014-12-20 18:49             ` Stefan Agner
2014-12-03  0:12 ` [PATCH 12/12] ARM: vf610m4: add defconfig for Linux on Vybrids Cortex-M4 Stefan Agner

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