linux-omap.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Santosh Shilimkar <santosh.shilimkar@ti.com>
To: linux-omap@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
	Santosh Shilimkar <santosh.shilimkar@ti.com>,
	davinci-linux-open-source@linux.davincidsp.com,
	Kevin Hilman <khilman@deeprootsystems.com>
Subject: [PATCH 3/3] davinci: Map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE
Date: Sun,  8 Aug 2010 15:48:22 +0530	[thread overview]
Message-ID: <1281262702-27732-1-git-send-email-santosh.shilimkar@ti.com> (raw)

On Davinci SRAM is mapped as MT_DEVICE becasue of the section
mapping pre-requisite instead of intended MT_MEMORY_NONCACHED

Since the section mapping limitation gets fixed with first
patch in this series, the MT_MEMORY_NONCACHED can be used now.

Have not tested this, so somebody with Davinci hardware can
try this out

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: davinci-linux-open-source@linux.davincidsp.com
Cc: Kevin Hilman <khilman@deeprootsystems.com>
---
 arch/arm/mach-davinci/dm355.c  |    3 +--
 arch/arm/mach-davinci/dm365.c  |    3 +--
 arch/arm/mach-davinci/dm644x.c |    3 +--
 arch/arm/mach-davinci/dm646x.c |    3 +--
 4 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index 3834781..e7bd2ad 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -767,8 +767,7 @@ static struct map_desc dm355_io_desc[] = {
 		.virtual	= SRAM_VIRT,
 		.pfn		= __phys_to_pfn(0x00010000),
 		.length		= SZ_32K,
-		/* MT_MEMORY_NONCACHED requires supersection alignment */
-		.type		= MT_DEVICE,
+		.type		= MT_MEMORY_NONCACHED,
 	},
 };
 
diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c
index a146849..5dee032 100644
--- a/arch/arm/mach-davinci/dm365.c
+++ b/arch/arm/mach-davinci/dm365.c
@@ -967,8 +967,7 @@ static struct map_desc dm365_io_desc[] = {
 		.virtual	= SRAM_VIRT,
 		.pfn		= __phys_to_pfn(0x00010000),
 		.length		= SZ_32K,
-		/* MT_MEMORY_NONCACHED requires supersection alignment */
-		.type		= MT_DEVICE,
+		.type		= MT_MEMORY_NONCACHED,
 	},
 };
 
diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index 7ad1520..5112d51 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -651,8 +651,7 @@ static struct map_desc dm644x_io_desc[] = {
 		.virtual	= SRAM_VIRT,
 		.pfn		= __phys_to_pfn(0x00008000),
 		.length		= SZ_16K,
-		/* MT_MEMORY_NONCACHED requires supersection alignment */
-		.type		= MT_DEVICE,
+		.type		= MT_MEMORY_NONCACHED,
 	},
 };
 
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index 9404565..97078f4 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -735,8 +735,7 @@ static struct map_desc dm646x_io_desc[] = {
 		.virtual	= SRAM_VIRT,
 		.pfn		= __phys_to_pfn(0x00010000),
 		.length		= SZ_32K,
-		/* MT_MEMORY_NONCACHED requires supersection alignment */
-		.type		= MT_DEVICE,
+		.type		= MT_MEMORY_NONCACHED,
 	},
 };
 
-- 
1.6.0.4


             reply	other threads:[~2010-08-08 10:18 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-08 10:18 Santosh Shilimkar [this message]
2010-08-19 18:29 ` [PATCH 3/3] davinci: Map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE Kevin Hilman
2010-08-26 21:37   ` Kevin Hilman
2010-08-27  4:46     ` Shilimkar, Santosh
2010-09-04  9:01       ` Shilimkar, Santosh

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=1281262702-27732-1-git-send-email-santosh.shilimkar@ti.com \
    --to=santosh.shilimkar@ti.com \
    --cc=davinci-linux-open-source@linux.davincidsp.com \
    --cc=khilman@deeprootsystems.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-omap@vger.kernel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).