From: Eliav Farber <farbere@amazon.com>
To: <brgl@bgdev.pl>, <robh+dt@kernel.org>, <mark.rutland@arm.com>,
<arnd@arndb.de>, <gregkh@linuxfoundation.org>,
<linux-i2c@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Cc: <farbere@amazon.com>, <talel@amazon.com>, <hhhawa@amazon.com>,
<jonnyc@amazon.com>, <hanochu@amazon.com>, <ronenk@amazon.com>,
<itamark@amazon.com>, <shellykz@amazon.com>, <shorer@amazon.com>,
<amitlavi@amazon.com>, <almogbs@amazon.com>, <dwmw@amazon.co.uk>
Subject: [PATCH 1/2] dt-bindings: at24: new optional property - enable-gpios
Date: Tue, 16 Aug 2022 13:00:01 +0000 [thread overview]
Message-ID: <20220816130002.41450-2-farbere@amazon.com> (raw)
In-Reply-To: <20220816130002.41450-1-farbere@amazon.com>
Boards using the AT24 EEPROMs might have a GPIO that must be set to
enable the chip (e.g. pin that controls the power supply).
Add a new optional property to the device tree binding document, which
allows to specify the GPIO line to which the enable pin is connected.
On Linux this means that we need to hog the line at the beginning of
probe function.
Signed-off-by: Eliav Farber <farbere@amazon.com>
---
Documentation/devicetree/bindings/eeprom/at24.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/eeprom/at24.txt b/Documentation/devicetree/bindings/eeprom/at24.txt
index f9a7c984274c..553b53ed3e4c 100644
--- a/Documentation/devicetree/bindings/eeprom/at24.txt
+++ b/Documentation/devicetree/bindings/eeprom/at24.txt
@@ -73,6 +73,9 @@ Optional properties:
- wp-gpios: GPIO to which the write-protect pin of the chip is connected.
+ - enable-gpios: GPIO to enables the chip (e.g. pin that controls the eeprom
+ power supply).
+
- address-width: number of address bits (one of 8, 16).
Example:
--
2.37.1
next prev parent reply other threads:[~2022-08-16 13:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-16 13:00 [PATCH 0/2] add enable gpio support for a24 eeprom driver Eliav Farber
2022-08-16 13:00 ` Eliav Farber [this message]
2022-08-18 1:48 ` [PATCH 1/2] dt-bindings: at24: new optional property - enable-gpios Rob Herring
2022-08-18 15:59 ` Farber, Eliav
2022-08-16 13:00 ` [PATCH 2/2] eeprom: at24: add enable gpio support Eliav Farber
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=20220816130002.41450-2-farbere@amazon.com \
--to=farbere@amazon.com \
--cc=almogbs@amazon.com \
--cc=amitlavi@amazon.com \
--cc=arnd@arndb.de \
--cc=brgl@bgdev.pl \
--cc=devicetree@vger.kernel.org \
--cc=dwmw@amazon.co.uk \
--cc=gregkh@linuxfoundation.org \
--cc=hanochu@amazon.com \
--cc=hhhawa@amazon.com \
--cc=itamark@amazon.com \
--cc=jonnyc@amazon.com \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=robh+dt@kernel.org \
--cc=ronenk@amazon.com \
--cc=shellykz@amazon.com \
--cc=shorer@amazon.com \
--cc=talel@amazon.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 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).