From: Joshua Clayton <stillcompiling@gmail.com>
To: mark.rutland@arm.com
Cc: robh+dt@kernel.org, pawel.moll@arm.com,
ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
a.zummo@towertech.it, grant.likely@linaro.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
rtc-linux@googlegroups.com,
Joshua Clayton <stillcompiling@gmail.com>
Subject: [PATCH] rtc: rtc-pfc2123: Add support for devicetree
Date: Mon, 29 Dec 2014 10:28:46 -0800 [thread overview]
Message-ID: <1419877726-8458-1-git-send-email-stillcompiling@gmail.com> (raw)
Add compatible string "nxp,rtc-pcf2123"
Document the binding
Signed-off-by: Joshua Clayton <stillcompiling@gmail.com>
---
Documentation/devicetree/bindings/rtc/nxp,rtc-2123.txt | 16 ++++++++++++++++
drivers/rtc/rtc-pcf2123.c | 10 ++++++++++
2 files changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rtc/nxp,rtc-2123.txt
diff --git a/Documentation/devicetree/bindings/rtc/nxp,rtc-2123.txt b/Documentation/devicetree/bindings/rtc/nxp,rtc-2123.txt
new file mode 100644
index 0000000..5cbc0b1
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/nxp,rtc-2123.txt
@@ -0,0 +1,16 @@
+NXP PCF2123 SPI Real Time Clock
+
+Required properties:
+- compatible: should be: "nxp,rtc-pcf2123"
+- reg: should be the SPI slave chipselect address
+
+Optional properties:
+- spi-cs-high: PCF2123 needs chipselect high
+
+Example:
+
+rtc: nxp,rtc-pcf2123@3 {
+ compatible = "nxp,rtc-pcf2123"
+ reg = <3>
+ spi-cs-high;
+};
diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
index d1953bb..8a7556c 100644
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -38,6 +38,7 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/of.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/rtc.h>
@@ -340,10 +341,19 @@ static int pcf2123_remove(struct spi_device *spi)
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id pcf2123_dt_ids[] = {
+ { .compatible = "nxp,rtc-pcf2123", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, pcf2123_dt_ids);
+#endif
+
static struct spi_driver pcf2123_driver = {
.driver = {
.name = "rtc-pcf2123",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(pcf2123_dt_ids),
},
.probe = pcf2123_probe,
.remove = pcf2123_remove,
--
2.1.0
reply other threads:[~2014-12-29 18:29 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=1419877726-8458-1-git-send-email-stillcompiling@gmail.com \
--to=stillcompiling@gmail.com \
--cc=a.zummo@towertech.it \
--cc=devicetree@vger.kernel.org \
--cc=galak@codeaurora.org \
--cc=grant.likely@linaro.org \
--cc=ijc+devicetree@hellion.org.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=pawel.moll@arm.com \
--cc=robh+dt@kernel.org \
--cc=rtc-linux@googlegroups.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