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Message-Id: <20190910104247.13142-1-biwen.li@nxp.com>
Date: Tue, 10 Sep 2019 18:42:46 +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: [v4,1/2] dt-bindings: rtc: pcf85263/pcf85363: add some properties
Add some properties for pcf85263/pcf85363 as follows:
- nxp,rtc-interrupt-type: integer type
- nxp,rtc-interrupt-output-pin: string type
- quartz-load-femtofarads: integer type
- nxp,quartz-drive-strength: integer type
- nxp,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>
---
Change in v4:
- Drop robust defines in include/dt-bindings/rtc/pcf85363.h
- Add nxp,rtc-interrupt-type property
- Replace interrupt-output-pin with nxp,rtc-interrupt-output-pin
Change in v3:
- None
Change in v2:
- Replace properties name
quartz-load-capacitance -> quartz-load-femtofarads
quartz-drive-strength -> nxp,quartz-drive-strength
quartz-low-jitter -> nxp,quartz-low-jitter
- Replace drive strength name
PCF85263_QUARTZDRIVE_NORMAL -> PCF85263_QUARTZDRIVE_100ko
PCF85263_QUARTZDRIVE_LOW -> PCF85263_QUARTZDRIVE_60ko
PCF85263_QUARTZDRIVE_HIGH -> PCF85263_QUARTZDRIVE_500ko
- Set default interrupt-output-pin as "INTA"
.../devicetree/bindings/rtc/pcf85363.txt | 44 ++++++++++++++++++-
include/dt-bindings/rtc/pcf85363.h | 14 ++++++
2 files changed, 57 insertions(+), 1 deletion(-)
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..fc1579463657 100644
--- a/Documentation/devicetree/bindings/rtc/pcf85363.txt
+++ b/Documentation/devicetree/bindings/rtc/pcf85363.txt
@@ -8,10 +8,52 @@ Required properties:
Optional properties:
- interrupts: IRQ line for the RTC (not implemented).
+- nxp,rtc-interrupt-type: integer property, represent the interrupt's
+ type. Valid values are
+ INT_PIE(periodic interrupt enable),
+ INT_OIE(offset correction interrupt enable),
+ INT_A1IE(alarm1 interrupt enable),
+ INT_A2IE(alarm2 interrupt enable),
+ INT_TSRIE(timestamp register interrupt enable)
+ INT_BSIE(battery switch interrupt enable),
+ INT_WDIE(WatchDog interrupt enable,and
+ compose these values such as: INT_A1IE | INT_A2IE,
+ but currently only support INT_A1IE, default value is INT_A1IE.
+ The property and property nxp,rtc-interrupt-output-pin
+ work together to generate some interrupts on some pins.
+
+- nxp,rtc-interrupt-output-pin: The interrupt output pin must be
+ "INTA" or "INTB", default value is "INTA". The property and property
+ nxp,rtc-interrupt-type work together to generate some interrupts on
+ some pins.
+
+- quartz-load-femtofarads: The internal capacitor to select for the quartz,
+ expressed in femto Farad (fF). Valid values are 6000, 7000 and 12500.
+ Default value is 12500fF.
+
+- nxp,quartz-drive-strength: Drive strength for the quartz,
+ expressed in kilo ohms (kOhm) Valid values are 60, 100 and 500.
+ Default value is 100kOhm.
+
+- nxp,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, Please refer to
+ Documentation/devicetree/bindings/power/wakeup-source.txt
+
Example:
pcf85363: pcf85363@51 {
compatible = "nxp,pcf85363";
reg = <0x51>;
-};
+ interrupt-parent = <&gpio1>;
+ interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
+
+ wakeup-source;
+ nxp,rtc-interrupt-output-pin = "INTA";
+ nxp,rtc-interrupt-type = <INT_A1IE>;
+ quartz-load-femtofarads = <12500>;
+ nxp,quartz-drive-strength = <60>;
+ nxp,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..6340bf2da8f5
--- /dev/null
+++ b/include/dt-bindings/rtc/pcf85363.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _DT_BINDINGS_RTC_PCF85363_H
+#define _DT_BINDINGS_RTC_PCF85363_H
+
+/* Interrupt type */
+#define INT_WDIE (1 << 0)
+#define INT_BSIE (1 << 1)
+#define INT_TSRIE (1 << 2)
+#define INT_A2IE (1 << 3)
+#define INT_A1IE (1 << 4)
+#define INT_OIE (1 << 5)
+#define INT_PIE (1 << 6)
+
+#endif /* _DT_BINDINGS_RTC_PCF85363_H */
--
2.17.1
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