From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: "David S. Miller" <davem@davemloft.net>
Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] dt-bindings: net: wiznet: add w5x00 support
Date: Tue, 30 Apr 2019 20:52:14 +0200 [thread overview]
Message-ID: <20190430185215.21685-2-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20190430185215.21685-1-nsaenzjulienne@suse.de>
Add bindings for Wiznet's w5x00 series of SPI interfaced Ethernet chips.
Based on the bindings for microchip,enc28j60.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
.../devicetree/bindings/net/wiznet,w5x00.txt | 48 +++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/wiznet,w5x00.txt
diff --git a/Documentation/devicetree/bindings/net/wiznet,w5x00.txt b/Documentation/devicetree/bindings/net/wiznet,w5x00.txt
new file mode 100644
index 000000000000..2cbedefb1607
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/wiznet,w5x00.txt
@@ -0,0 +1,48 @@
+* Wiznet w5x00
+
+This is a standalone 10/100 MBit Ethernet controller with SPI interface.
+
+For each device connected to a SPI bus, define a child node within
+the SPI master node.
+
+Required properties:
+- compatible: Should be "wiznet,w5100", "wiznet,w5200" or "wiznet,w5500"
+- reg: Specify the SPI chip select the chip is wired to.
+- interrupts: Specify the interrupt index within the interrupt controller (referred
+ to above in interrupt-parent) and interrupt type. w5x00 natively
+ generates falling edge interrupts, however, additional board logic
+ might invert the signal.
+- pinctrl-names: List of assigned state names, see pinctrl binding documentation.
+- pinctrl-0: List of phandles to configure the GPIO pin used as interrupt line,
+ see also generic and your platform specific pinctrl binding
+ documentation.
+
+Optional properties:
+- spi-max-frequency: Maximum frequency of the SPI bus when accessing the w5500.
+ According to the w5500 datasheet, the chip allows a maximum of 80 MHz, however,
+ board designs may need to limit this value.
+- local-mac-address: See ethernet.txt in the same directory.
+
+
+Example (for Raspberry Pi with pin control stuff for GPIO irq):
+
+&spi {
+ eth1: w5500@0 {
+ compatible = "wiznet,w5500";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <ð1_pins>;
+ interrupt-parent = <&gpio>;
+ interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+ spi-max-frequency = <30000000>;
+ };
+};
+
+&gpio {
+ eth1_pins: eth1_pins {
+ brcm,pins = <25>;
+ brcm,function = <0>; /* in */
+ brcm,pull = <0>; /* none */
+ };
+};
+
--
2.21.0
next prev parent reply other threads:[~2019-04-30 18:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-30 18:52 [PATCH 1/2] net: ethernet: wiznet: w5X00 add device tree support Nicolas Saenz Julienne
2019-04-30 18:52 ` Nicolas Saenz Julienne [this message]
2019-05-02 21:09 ` [PATCH 2/2] dt-bindings: net: wiznet: add w5x00 support Rob Herring
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=20190430185215.21685-2-nsaenzjulienne@suse.de \
--to=nsaenzjulienne@suse.de \
--cc=davem@davemloft.net \
--cc=devicetree@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=netdev@vger.kernel.org \
--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).