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 v5 1/3] dt-bindings: i2c: extend existing opencore bindings.
Date: Mon, 20 May 2019 19:41:16 +0530 [thread overview]
Message-ID: <1558361478-4381-2-git-send-email-sagar.kadam@sifive.com> (raw)
In-Reply-To: <1558361478-4381-1-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. 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
reimplementation.
The DT compatibility string for this IP is present in HDL and available at.
https://github.com/sifive/sifive-blocks/blob/master/src/main/scala/devices/i2c/I2C.scala#L73
Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
---
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
--
1.9.1
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next prev parent reply other threads:[~2019-05-20 14:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-20 14:11 [PATCH v5 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 14:11 ` Sagar Shrikant Kadam [this message]
2019-05-20 14:36 ` [PATCH v5 1/3] dt-bindings: i2c: extend existing opencore bindings Rob Herring
2019-05-21 3:48 ` Sagar Kadam
2019-05-20 14:11 ` [PATCH v5 2/3] i2c-ocores: sifive: add support for i2c device on FU540-c000 SoC Sagar Shrikant Kadam
2019-05-20 14:11 ` [PATCH v5 3/3] i2c-ocores: sifive: add polling mode workaround for FU540-C000 SoC Sagar Shrikant Kadam
2019-05-20 14:52 ` Andrew Lunn
2019-05-20 15:20 ` Sagar Kadam
2019-05-21 8:33 ` Andreas Schwab
2019-05-21 8:57 ` Sagar Kadam
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