linux-kernel - [1/2] dt-bindings: rtc: pcf85263/pcf85363: add some properties

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Date:   Fri, 30 Aug 2019 17:17:19 +0800
From:   Biwen Li <biwen.li@....com>
To:     a.zummo@...ertech.it, alexandre.belloni@...tlin.com,
        robh+dt@...nel.org, mark.rutland@....com, leoyang.li@....com
Cc:     linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Biwen Li <biwen.li@....com>,
        Martin Fuzzey <mfuzzey@...keon.com>
Subject: [1/2] dt-bindings: rtc: pcf85263/pcf85363: add some properties

Add some properties for pcf85263/pcf85363 as follows:
  - interrupt-output-pin: string type
  - quartz-load-capacitance: integer type
  - quartz-drive-strength: integer type
  - quartz-low-jitter: bool type
  - wakeup-source: bool type

Signed-off-by: Martin Fuzzey <mfuzzey@...keon.com>
Signed-off-by: Biwen Li <biwen.li@....com>
---
 .../devicetree/bindings/rtc/pcf85363.txt      | 31 +++++++++++++++++++
 include/dt-bindings/rtc/pcf85363.h            | 15 +++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 include/dt-bindings/rtc/pcf85363.h

diff --git a/Documentation/devicetree/bindings/rtc/pcf85363.txt b/Documentation/devicetree/bindings/rtc/pcf85363.txt
index 94adc1cf93d9..d83359990bd7 100644
--- a/Documentation/devicetree/bindings/rtc/pcf85363.txt
+++ b/Documentation/devicetree/bindings/rtc/pcf85363.txt
@@ -8,10 +8,41 @@ Required properties:
 Optional properties:
 - interrupts: IRQ line for the RTC (not implemented).
 
+- interrupt-output-pin: The interrupt output pin must be
+  "NONE", "INTA" or "INTB", default value is "NONE"
+
+- quartz-load-capacitance: The internal capacitor to select for the quartz:
+	PCF85263_QUARTZCAP_7pF		[0]
+	PCF85263_QUARTZCAP_6pF		[1]
+	PCF85263_QUARTZCAP_12p5pF	[2] DEFAULT
+
+- quartz-drive-strength: Drive strength for the quartz:
+	PCF85263_QUARTZDRIVE_NORMAL	[0] DEFAULT
+	PCF85263_QUARTZDRIVE_LOW	[1]
+	PCF85263_QUARTZDRIVE_HIGH	[2]
+
+- quartz-low-jitter: Boolean property, if present enables low jitter mode
+  which reduces jitter at the cost of increased power consumption.
+
+- wakeup-source: Boolean property, mark the chip as a wakeup source,
+  independently of the availability of an IRQ line connected to the SoC.
+  This is useful if the IRQ line is connected to a PMIC or other circuit
+  that can power up the device rather than to a normal SOC interrupt.
+
 Example:
 
 pcf85363: pcf85363@51 {
 	compatible = "nxp,pcf85363";
 	reg = <0x51>;
+
+	interrupt-parent = <&gpio1>;
+	interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
+
+	#include <dt-bindings/rtc/pcf85363.h>
+	wakeup-source;
+	interrupt-output-pin = "INTA";
+	quartz-load-capacitance = <PCF85363_QUARTZCAP_12p5pF>;
+	quartz-drive-strength = <PCF85363_QUARTZDRIVE_LOW>;
+	quartz-low-jitter;
 };
 
diff --git a/include/dt-bindings/rtc/pcf85363.h b/include/dt-bindings/rtc/pcf85363.h
new file mode 100644
index 000000000000..2c06c28eb5ff
--- /dev/null
+++ b/include/dt-bindings/rtc/pcf85363.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _DT_BINDINGS_RTC_PCF85363_H
+#define _DT_BINDINGS_RTC_PCF85363_H
+
+/* Quartz capacitance */
+#define PCF85363_QUARTZCAP_7pF		0
+#define PCF85363_QUARTZCAP_6pF		1
+#define PCF85363_QUARTZCAP_12p5pF	2
+
+/* Quartz drive strength */
+#define PCF85363_QUARTZDRIVE_NORMAL	0
+#define PCF85363_QUARTZDRIVE_LOW	1
+#define PCF85363_QUARTZDRIVE_HIGH	2
+
+#endif /* _DT_BINDINGS_RTC_PCF85363_H */
-- 
2.17.1