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From: pavel@denx.de (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 2/3] ARM: socfpga: Add driver for the L3 interconnect
Date: Mon, 15 Dec 2014 23:34:40 +0100	[thread overview]
Message-ID: <20141215223440.GC27866@amd> (raw)
In-Reply-To: <1417292052-12974-3-git-send-email-s.trumtrar@pengutronix.de>

Hi!

> The L3 interconnect provides Global Programmer View (GPV) registers for every
> AXI master and slave on the SoC.
> Although this is just a bunch of bits, syscon is not the right approach for
> this IP core.
> The L3 interconnect is configured with a lot of reserved "holes" in its memory
> space. Just mapping this with regmap, what syscon would do, would lead to the
> system completely hanging, if one of those areas would be touched.
> One example for when this might happen is the regmap registers dump in the
> debugfs.

Could syscon be extended to take more than one range? Then, you could
simply list all the ranges in device tree and use syscon...

> diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
> index 76d6bd4da138..11db07da894f 100644
> --- a/drivers/soc/Kconfig
> +++ b/drivers/soc/Kconfig
> @@ -1,6 +1,7 @@
>  menu "SOC (System On Chip) specific Drivers"

SoC is usual spelling.

> @@ -0,0 +1,10 @@
> +#
> +# SoCFPGA Soc drivers

SoC.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

  parent reply	other threads:[~2014-12-15 22:34 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-29 20:14 [PATCH v3 0/3] SoCFPGA: L3 NIC driver Steffen Trumtrar
2014-11-29 20:14 ` [PATCH v3 1/3] Documentation: dt: add Altera L3 NIC bindings Steffen Trumtrar
2014-12-02 16:44   ` Dinh Nguyen
2014-11-29 20:14 ` [PATCH v3 2/3] ARM: socfpga: Add driver for the L3 interconnect Steffen Trumtrar
2014-12-02 16:45   ` Dinh Nguyen
2014-12-05 19:51     ` atull
2014-12-05 20:19       ` Steffen Trumtrar
2014-12-15 22:34   ` Pavel Machek [this message]
2014-12-16  8:31     ` Steffen Trumtrar
2014-11-29 20:14 ` [PATCH v3 3/3] ARM: dts: socfpga: Add l3nic node Steffen Trumtrar
2014-12-02 16:46   ` Dinh Nguyen
2014-11-30 11:51 ` [PATCH v3 0/3] SoCFPGA: L3 NIC driver Arnd Bergmann
2014-11-30 20:53   ` Robert Schwebel
2014-12-04 16:30     ` Arnd Bergmann
2014-12-04 18:37       ` Mark Rutland
2014-12-05 11:30         ` Robin Murphy
2014-12-05 22:18           ` Rob Herring
2014-12-01 10:08 ` Mark Rutland
2014-12-01 10:36   ` Steffen Trumtrar
2014-12-02 16:44 ` Dinh Nguyen

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