From: Greg Kroah-Hartman <greg@kroah.com>
To: Timur Tabi <timur@codeaurora.org>
Cc: peter@hurleysoftware.com, andre.przywara@arm.com,
Linus Walleij <linus.walleij@linaro.org>,
Andrew.Jackson@arm.com, linux-serial@vger.kernel.org,
jslaby@suse.com, rmk+kernel@arm.linux.org.uk, jun.nie@linaro.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] tty: amba-pl011: add support for 32-bit register access for earlycon
Date: Sat, 12 Dec 2015 22:06:43 -0800 [thread overview]
Message-ID: <20151213060643.GA30667@kroah.com> (raw)
In-Reply-To: <1446855503-25881-1-git-send-email-timur@codeaurora.org>
On Fri, Nov 06, 2015 at 06:18:23PM -0600, Timur Tabi wrote:
> Add support the "mmio32" earlycon option for the pl011 device. If
> specified in the earlycon parameter, all reads/writes to pl011 registers
> during early console will use 32-bit accessors. Normally the function
> uses 8-bit writes.
>
> Normal console uses the "access_32b" field of the vendor data structure
> to determine whether the registers needs 32-bit accessors. Early console
> is used before the vendor data is available, so we need a different
> mechanism to choose the accessor.
>
> Example:
>
> earlycon=pl011,mmio32,0x3ced1000
>
> Signed-off-by: Timur Tabi <timur@codeaurora.org>
> ---
>
> This patch applies on top of Russell's 12-part amba-pl011.c patchset.
Which I didn't apply, so can you resend this after he resends his?
thanks,
greg k-h
next prev parent reply other threads:[~2015-12-13 6:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-07 0:18 [PATCH] tty: amba-pl011: add support for 32-bit register access for earlycon Timur Tabi
2015-12-13 6:06 ` Greg Kroah-Hartman [this message]
2015-12-13 15:34 ` Timur Tabi
2015-12-17 15:55 ` Timur Tabi
2015-12-17 16:27 ` Greg Kroah-Hartman
2015-12-17 16:47 ` Timur Tabi
2015-12-17 17:06 ` Peter Hurley
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