From: Roger Quadros <rogerq@ti.com>
To: <tony@atomide.com>
Cc: <hch@lst.de>, <robin.murphy@arm.com>, <robh+dt@kernel.org>,
<nm@ti.com>, <t-kristo@ti.com>, <nsekhar@ti.com>,
<linux-omap@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, Roger Quadros <rogerq@ti.com>,
<stable@kernel.org>
Subject: [PATCH] ARM: dts: omap5: Add bus_dma_limit for L3 bus
Date: Mon, 16 Mar 2020 12:27:31 +0200 [thread overview]
Message-ID: <20200316102731.15467-1-rogerq@ti.com> (raw)
The L3 interconnect's memory map is from 0x0 to
0xffffffff. Out of this, System memory (SDRAM) can be
accessed from 0x80000000 to 0xffffffff (2GB)
OMAP5 does support 4GB of SDRAM but upper 2GB can only be
accessed by the MPU subsystem.
Add the dma-ranges property to reflect the physical address limit
of the L3 bus.
Cc: stable@kernel.org
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
arch/arm/boot/dts/omap5.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
index d0ecf54d5a23..a7562d3deb1a 100644
--- a/arch/arm/boot/dts/omap5.dtsi
+++ b/arch/arm/boot/dts/omap5.dtsi
@@ -143,6 +143,7 @@
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0 0 0xc0000000>;
+ dma-ranges = <0x80000000 0x0 0x80000000 0x80000000>;
ti,hwmods = "l3_main_1", "l3_main_2", "l3_main_3";
reg = <0 0x44000000 0 0x2000>,
<0 0x44800000 0 0x3000>,
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next reply other threads:[~2020-03-16 10:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-16 10:27 Roger Quadros [this message]
2020-03-17 17:01 ` [PATCH] ARM: dts: omap5: Add bus_dma_limit for L3 bus Tony Lindgren
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=20200316102731.15467-1-rogerq@ti.com \
--to=rogerq@ti.com \
--cc=devicetree@vger.kernel.org \
--cc=hch@lst.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=nm@ti.com \
--cc=nsekhar@ti.com \
--cc=robh+dt@kernel.org \
--cc=robin.murphy@arm.com \
--cc=stable@kernel.org \
--cc=t-kristo@ti.com \
--cc=tony@atomide.com \
/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.