From: Christopher Covington <cov@codeaurora.org>
To: Russell King <linux@arm.linux.org.uk>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: linux-arm-msm@vger.kernel.org, Timur Tabi <timur@codeaurora.org>,
Jon Masters <jcm@redhat.com>,
Mark Langsdorf <mlangsdo@redhat.com>,
Andre Przywara <andre.przywara@arm.com>,
Dave Martin <dave.martin@linaro.org>,
Aleksey Makarov <aleksey.makarov@linaro.org>,
Christopher Covington <christopher.covington@linaro.org>,
Christopher Covington <cov@codeaurora.org>
Subject: [PATCH] tty: amba-pl011: Use 32-bit accesses for SBSA UART
Date: Tue, 8 Mar 2016 00:43:19 -0500 [thread overview]
Message-ID: <1457415800-8799-1-git-send-email-cov@codeaurora.org> (raw)
From: Christopher Covington <christopher.covington@linaro.org>
Version 2 of the Server Base System Architecture (SBSA) describes the
Generic UART registers as 32 bits wide. At least one implementation, found
of the Qualcomm Technologies QDF2432, only supports 32 bit accesses. While
other implementations may also support smaller sized accesses, simply use
32 bit accesses all the time for the SBSA UART for simple, broad,
compatibility.
Signed-off-by: Christopher Covington <cov@codeaurora.org>
---
drivers/tty/serial/amba-pl011.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index c0da0cc..ffb5eb8 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -121,6 +121,7 @@ static struct vendor_data vendor_arm = {
static struct vendor_data vendor_sbsa = {
.reg_offset = pl011_std_offsets,
+ .access_32b = true,
.oversampling = false,
.dma_threshold = false,
.cts_event_workaround = false,
--
Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next reply other threads:[~2016-03-08 5:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-08 5:43 Christopher Covington [this message]
2016-03-08 14:51 ` [PATCH] tty: amba-pl011: Use 32-bit accesses for SBSA UART Mark Langsdorf
2016-03-11 6:35 ` Christopher Covington
2016-03-11 15:02 ` Peter Hurley
2016-03-11 23:38 ` [PATCH v2] " Christopher Covington
2016-03-15 10:08 ` [PATCH] " Andre Przywara
2016-03-30 12:30 ` Christopher Covington
2016-03-30 16:55 ` Greg Kroah-Hartman
2016-03-30 17:01 ` Timur Tabi
2016-03-30 18:01 ` Greg Kroah-Hartman
2016-03-30 18:11 ` Timur Tabi
2016-04-01 21:23 ` [PATCH v3] " Christopher Covington
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1457415800-8799-1-git-send-email-cov@codeaurora.org \
--to=cov@codeaurora.org \
--cc=aleksey.makarov@linaro.org \
--cc=andre.przywara@arm.com \
--cc=christopher.covington@linaro.org \
--cc=dave.martin@linaro.org \
--cc=gregkh@linuxfoundation.org \
--cc=jcm@redhat.com \
--cc=jslaby@suse.com \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
--cc=linux@arm.linux.org.uk \
--cc=mlangsdo@redhat.com \
--cc=timur@codeaurora.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.