Linux-RISC-V Archive on
 help / color / Atom feed
From: Sagar Shrikant Kadam <>
Subject: [PATCH v4 1/3] dt-bindings: i2c: extend existing opencore bindings.
Date: Mon, 20 May 2019 17:50:15 +0530
Message-ID: <> (raw)
In-Reply-To: <>

Add FU540-C000 specific device tree bindings to already
available i2-ocores file. This device is available on
HiFive Unleashed Rev A00 board. Move interrupt and interrupt
parents under optional property list as these can be optional.

The FU540-C000 SoC from sifive, has an Opencore's I2C block

The DT compatibility string for this IP is present in HDL and available at.

Signed-off-by: Sagar Shrikant Kadam <>
 Documentation/devicetree/bindings/i2c/i2c-ocores.txt | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
index 17bef9a..b73960e 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-ocores.txt
@@ -2,8 +2,11 @@ Device tree configuration for i2c-ocores
 Required properties:
 - compatible      : "opencores,i2c-ocores" or "aeroflexgaisler,i2cmst"
+                    "sifive,fu540-c000-i2c" or "sifive,i2c0".
+		    for Opencore based I2C IP block reimplemented in
+		    FU540-C000 SoC.Please refer sifive-blocks-ip-versioning.txt
+		    for additional details.
 - reg             : bus address start and address range size of device
-- interrupts      : interrupt number
 - clocks          : handle to the controller clock; see the note below.
                     Mutually exclusive with opencores,ip-clock-frequency
 - opencores,ip-clock-frequency: frequency of the controller clock in Hz;
@@ -12,6 +15,8 @@ Required properties:
 - #size-cells     : should be <0>
 Optional properties:
+- interrupt-parent: handle to interrupt controller.
+- interrupts      : interrupt number.
 - clock-frequency : frequency of bus clock in Hz; see the note below.
                     Defaults to 100 KHz when the property is not specified
 - reg-shift       : device register offsets are shifted by this value

linux-riscv mailing list

  reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-20 12:20 [PATCH v4 0/3] Extend dt bindings to support I2C on sifive devices and a fix broken IRQ in polling mode Sagar Shrikant Kadam
2019-05-20 12:20 ` Sagar Shrikant Kadam [this message]
2019-05-20 12:20 ` [PATCH v4 2/3] i2c-ocores: sifive: add support for i2c device on FU540-c000 SoC Sagar Shrikant Kadam
2019-05-20 12:20 ` [PATCH v4 3/3] i2c-ocores: sifive: add polling mode workaround for FU540-C000 SoC Sagar Shrikant Kadam
2019-05-20 12:41   ` Andrew Lunn
2019-05-20 13:27     ` Sagar Kadam

Reply instructions:

You may reply publically 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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \ \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-RISC-V Archive on

Archives are clonable:
	git clone --mirror linux-riscv/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-riscv linux-riscv/ \
	public-inbox-index linux-riscv

Newsgroup available over NNTP:

AGPL code for this site: git clone public-inbox