From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
To: linux-sh@vger.kernel.org
Subject: Re: [PATCH v2 02/02] ARM: shmobile: Add SDHI devices for Koelsch DTS
Date: Sat, 03 May 2014 15:51:45 +0000 [thread overview]
Message-ID: <53651091.1040601@cogentembedded.com> (raw)
In-Reply-To: <20140212095404.4832.61203.sendpatchset@w520>
Hello.
On 05/03/2014 04:11 AM, Sergei Shtylyov wrote:
>> From: Magnus Damm <damm@opensource.se>
>> Add DT support for SDHI0, SDHI1 and SDHI2 on Koelsch.
>> The board specific handling of CD and WP pins are
>> using GPIOs.
> Frankly speaking, I didn't understand why. The native SDHI[012] CD/WP pins
> are used in the legacy Koelsch code, why not do the same in the device tree?
Ah, after looking at the SDHI driver, it seems I've figured that out: it
only can use GPIO for the CD signal, and the WP signal is ignored for R-Car
gen2 SoCs, so that only GPIO can actually work... Now I'm wondering how the
legacy code manages to work. :-)
>> SDHI0 and SDHI1 are hooked up to regular
>> SD connectors while SDHI2 is using micro-SD which
>> is lacking WP signal.
>> Signed-off-by: Magnus Damm <damm@opensource.se>
WBR, Sergei
next prev parent reply other threads:[~2014-05-03 15:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-12 9:54 [PATCH v2 02/02] ARM: shmobile: Add SDHI devices for Koelsch DTS Magnus Damm
2014-05-03 0:11 ` Sergei Shtylyov
2014-05-03 15:51 ` Sergei Shtylyov [this message]
2014-05-03 19:16 ` Magnus Damm
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