From: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
To: robh+dt@kernel.org, mark.rutland@arm.com, peter@korsgaard.com,
andrew@lunn.ch, palmer@sifive.com, paul.walmsley@sifive.com,
sagar.kadam@sifive.com, linux-i2c@vger.kernel.org,
devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 v2 1/3] dt-bindings: i2c: extend existing opencore bindings.
Date: Tue, 7 May 2019 20:45:06 +0530 [thread overview]
Message-ID: <1557242108-13580-2-git-send-email-sagar.kadam@sifive.com> (raw)
In-Reply-To: <1557242108-13580-1-git-send-email-sagar.kadam@sifive.com>
Add FU540-C000 specific device tree bindings to already
available i2-ocores file. This device is available on
HiFive Unleashed Rev A00 board.
Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
---
Documentation/devicetree/bindings/i2c/i2c-ocores.txt | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
index 17bef9a..f6bcf90 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
@@ -2,6 +2,7 @@ Device tree configuration for i2c-ocores
Required properties:
- compatible : "opencores,i2c-ocores" or "aeroflexgaisler,i2cmst"
+ "sifive,fu540-c000-i2c" or "sifive,i2c0"
- reg : bus address start and address range size of device
- interrupts : interrupt number
- clocks : handle to the controller clock; see the note below.
@@ -67,3 +68,22 @@ or
reg = <0x60>;
};
};
+or
+ /*
+ An Opencore based I2C node in FU540-C000 chip from SiFive
+ This chip has a hardware erratum for broken IRQ
+ so it's recommended not to define interrupt in the device node
+ */
+ i2c@10030000 {
+ compatible = "sifive,i2c0","sifive,fu540-c000-i2c";
+ reg = <0x0 0x10030000 0x0 0x1000>;
+ reg-names = "i2c-control";
+ clocks = <&tlclk>;
+ clock-frequency = <100000>;
+
+ reg-shift = <2>;
+ reg-io-width = <1>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
--
1.9.1
--
The information transmitted is intended only for the person or entity to
which it is addressed and may contain confidential and/or privileged
material. If you are not the intended recipient of this message please do
not read, copy, use or disclose this communication and notify the sender
immediately. It should be noted that any review, retransmission,
dissemination or other use of, or taking action or reliance upon, this
information by persons or entities other than the intended recipient is
prohibited.
next prev parent reply other threads:[~2019-05-07 15:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-07 15:15 [PATCH v2 v2 0/3] Extend dt bindings to support I2C on sifive devices and a fix broken IRQ in polling mode Sagar Shrikant Kadam
2019-05-07 15:15 ` Sagar Shrikant Kadam [this message]
2019-05-07 15:24 ` [PATCH v2 v2 1/3] dt-bindings: i2c: extend existing opencore bindings Andrew Lunn
2019-05-13 20:56 ` Rob Herring
2019-05-14 12:50 ` Sagar Kadam
2019-05-14 13:01 ` Andrew Lunn
2019-05-14 16:05 ` Rob Herring
2019-05-07 15:15 ` [PATCH v2 v2 2/3] i2c-ocore: sifive: add support for i2c device on FU540-c000 SoC Sagar Shrikant Kadam
2019-05-07 15:26 ` Andrew Lunn
2019-05-07 15:15 ` [PATCH v2 v2 3/3] i2c-ocores: sifive: add polling mode workaround for FU540-C000 SoC Sagar Shrikant Kadam
2019-05-07 15:27 ` [PATCH v2 v2 0/3] Extend dt bindings to support I2C on sifive devices and a fix broken IRQ in polling mode Andrew Lunn
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=1557242108-13580-2-git-send-email-sagar.kadam@sifive.com \
--to=sagar.kadam@sifive.com \
--cc=andrew@lunn.ch \
--cc=devicetree@vger.kernel.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=mark.rutland@arm.com \
--cc=palmer@sifive.com \
--cc=paul.walmsley@sifive.com \
--cc=peter@korsgaard.com \
--cc=robh+dt@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).