From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 09/10] ARM: dts: introduce MPS2 AN385/AN386
Date: Thu, 18 Feb 2016 13:16:28 +0100 [thread overview]
Message-ID: <5567140.dIBhKTnriP@wuerfel> (raw)
In-Reply-To: <56C5A742.8010304@arm.com>
On Thursday 18 February 2016 11:13:06 Vladimir Murzin wrote:
> On 18/02/16 10:45, Arnd Bergmann wrote:
> > On Thursday 18 February 2016 10:11:37 Vladimir Murzin wrote:
> >>
> >> Right, I thought in a wrong way, in opposite it makes more sense now.
> >>
> >> .dtsi
> >>
> >> /* below the soc/ */
> >> smb {
> >> compatible = "simple-bus";
> >> #address-cells = <2>;
> >> #size-cells = <1>;
> >> ranges = <0 0 0x40200000 0x10000>,
> >> <1 0 0xa0000000 0x10000>;
> >> };
> >
> > That looks good, yes.
> >
> > Is 0x10000 the correct maximum addressable size of the external bus
> > in both cases?
> >
> > Intuitively, I would guess that the 0xa0000000 range might
> > be much wider.
>
> There is only Ethernet connected to this bus (apart from PSRAM), so it
> might be wider, but there is no indication of this in documentation.
I see this called "ahb_to_extmem16" in the documentation, which indicates
that it might be use 16 bits of address space, which would match
the 64K you listed.
For SSRAM1 / SSRAM2 / SSRAM3, a 8 MB address space is mentioned
and 16 MB for external PSRAM at 0x21000000.
Arnd
next prev parent reply other threads:[~2016-02-18 12:16 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-16 10:08 [PATCH v3 00/10] Support for Cortex-M Prototyping System Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 01/10] dt-bindings: document the MPS2 timer bindings Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 02/10] clockevents/drivers: add MPS2 Timer driver Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 03/10] dt-bindings: document the MPS2 UART bindings Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 04/10] serial: mps2-uart: add MPS2 UART driver Vladimir Murzin
2016-02-16 10:48 ` Andy Shevchenko
2016-02-16 14:25 ` Vladimir Murzin
2016-02-16 11:02 ` One Thousand Gnomes
2016-02-16 15:09 ` Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 05/10] serial: mps2-uart: add support for early console Vladimir Murzin
2016-02-16 10:36 ` Andy Shevchenko
2016-02-16 13:09 ` Vladimir Murzin
2016-02-16 13:13 ` Andy Shevchenko
2016-02-16 13:38 ` Vladimir Murzin
2016-02-16 14:00 ` Andy Shevchenko
2016-02-16 16:12 ` One Thousand Gnomes
2016-02-19 9:45 ` Vladimir Murzin
2016-02-19 9:57 ` Andy Shevchenko
2016-02-19 15:46 ` Peter Hurley
2016-02-19 16:27 ` Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 06/10] ARM: mps2: introduce MPS2 platform Vladimir Murzin
2016-02-16 10:56 ` Arnd Bergmann
2016-02-16 14:35 ` Vladimir Murzin
2016-02-16 14:39 ` Arnd Bergmann
2016-02-16 10:08 ` [PATCH v3 07/10] ARM: mps2: add low-level debug support Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 08/10] ARM: configs: add MPS2 defconfig Vladimir Murzin
2016-02-16 10:58 ` Arnd Bergmann
2016-02-16 14:51 ` Vladimir Murzin
2016-02-16 15:08 ` Arnd Bergmann
2016-02-16 15:14 ` Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 09/10] ARM: dts: introduce MPS2 AN385/AN386 Vladimir Murzin
2016-02-16 11:01 ` Arnd Bergmann
2016-02-16 16:10 ` Vladimir Murzin
2016-02-17 16:48 ` Vladimir Murzin
2016-02-17 16:58 ` Arnd Bergmann
2016-02-18 10:11 ` Vladimir Murzin
2016-02-18 10:45 ` Arnd Bergmann
2016-02-18 11:13 ` Vladimir Murzin
2016-02-18 12:16 ` Arnd Bergmann [this message]
2016-02-18 12:47 ` Vladimir Murzin
2016-02-16 15:17 ` Linus Walleij
2016-02-16 15:37 ` Vladimir Murzin
2016-02-16 10:08 ` [PATCH v3 10/10] ARM: dts: introduce MPS2 AN399/AN400 Vladimir Murzin
2016-02-16 11:05 ` [PATCH v3 00/10] Support for Cortex-M Prototyping System Arnd Bergmann
2016-02-16 16:14 ` Vladimir Murzin
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