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From: Can Aydin <can.aydin@locatacorp.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [RFC] [PATCH 0/4] Add support for Freescale's 85xx and P1/P2xxx eSPI controller
Date: Tue, 28 Sep 2010 22:27:24 +1000	[thread overview]
Message-ID: <4CA1DF2C.3010005@locatacorp.com> (raw)
In-Reply-To: <4CA1D63E.3090102@locatacorp.com>



>> Can the Chip Select Pins be used as GPIO? It might be simpler to do
>> that than
>> adding a speciality to common code.
> True, a GPIO pin could be re-purposed to serve as chip select, but that
> would involve a soldering iron and a steady hand as the P1/P2xxRDB
> boards are reference design boards sold by a lot of third party vendors
> (including Denx if I'm not mistaken) this would detract from the ability
> to just plug u-boot in and run with it.
>
> People could also choose to bitbang the SPI on their custom hardware but
> again I feel that might defeat the purpose and spirit of u-boot. (Then
> again, I'm new so don't quote me on that).
>
Quick followup, I may have misunderstood that question. The SPI pins can 
only be re-purposed as extra data pins for the SDHC. It's not possible 
to use them as GPIO.

  reply	other threads:[~2010-09-28 12:27 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-05 22:14 [U-Boot] [RFC PATCH 0/3] Add device tree support for ARM to U-Boot John Rigby
2010-08-05 22:14 ` [U-Boot] [RFC 1/3] FDT: Add fixup support of multiple banks of memory John Rigby
2010-08-05 23:26   ` Kumar Gala
2010-08-05 23:36     ` John Rigby
2010-08-10 19:39       ` Grant Likely
2010-08-10 20:17         ` Dan Malek
2010-08-10 20:26           ` Grant Likely
2010-08-10 21:17             ` Dan Malek
2010-08-10 21:03         ` John Rigby
2010-08-10 21:09           ` Grant Likely
2010-08-10 22:22         ` Scott Wood
2010-09-28  9:56     ` [U-Boot] [RFC] [PATCH 0/4] Add support for Freescale's 85xx and P1/P2xxx eSPI controller Can Aydin
2010-09-28 11:02       ` Reinhard Meyer
2010-09-28 11:49         ` Can Aydin
2010-09-28 12:27           ` Can Aydin [this message]
2010-09-28 12:46           ` Wolfgang Denk
2010-09-28 13:22             ` Reinhard Meyer
2010-09-28 23:37               ` Can Aydin
2010-09-28 23:50             ` Can Aydin
2010-10-13 10:25       ` Xie Shaohui-B21989
2010-10-27 10:50         ` Can Aydin
2010-08-05 22:14 ` [U-Boot] [RFC 2/3] ARM: WIP: add flat device tree support John Rigby
2010-08-05 22:31   ` Wolfgang Denk
2010-08-05 23:07     ` John Rigby
2010-08-10 19:44   ` Grant Likely
2010-08-10 19:46     ` Grant Likely
2010-08-10 20:23     ` Albert ARIBAUD
2010-08-10 20:48       ` John Rigby
2010-08-10 21:01         ` Wolfgang Denk
2010-08-05 22:14 ` [U-Boot] [RFC 3/3] ARM: add config for beagle with fdt enabled John Rigby
2010-08-05 22:35   ` Wolfgang Denk
2010-08-05 23:04     ` John Rigby
2010-09-01 16:53 ` [U-Boot] [PATCH 0/5] Device tree support for ARM John Rigby
2010-09-01 16:53 ` [U-Boot] [PATCH 1/5] FDT: Add fixup support for multiple banks of memory John Rigby
2010-09-01 16:53 ` [U-Boot] [PATCH 2/5] FDT: only call boot_get_fdt from generic code John Rigby
2010-09-01 16:53 ` [U-Boot] [PATCH 3/5] boot: change some arch ifdefs to feature ifdefs John Rigby
2010-09-01 16:53 ` [U-Boot] [PATCH 4/5] ARM: add flat device tree support John Rigby
2010-10-06 15:26   ` Rob Herring
2010-09-01 16:53 ` [U-Boot] [PATCH 5/5] ARM: enable device tree for beagle John Rigby
2010-09-01 16:59   ` John Rigby

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