[PATCH 2/6] dt-bindings: rtc: stm32: add alarm A out property to select output
From: Valentin Caron <hidden>
Date: 2022-05-04 13:07:33
Also in:
linux-devicetree, linux-rtc, lkml
Subsystem:
open firmware and flattened device tree bindings, real time clock (rtc) subsystem, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Alexandre Belloni, Linus Torvalds
STM32 RTC can pulse some SOC pins when an alarm of RTC expires. This patch adds property to activate alarm A output. The pulse can output on three pins RTC_OUT1, RTC_OUT2, RTC_OUT2_RMP (PC13, PB2, PI8 on stm32mp15) (PC13, PB2, PI1 on stm32mp13). Signed-off-by: Valentin Caron <redacted> --- .../devicetree/bindings/rtc/st,stm32-rtc.yaml | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml
index 56d46ea35c5d..71e02604e8de 100644
--- a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml@@ -59,6 +59,13 @@ properties: Refer to <include/dt-bindings/rtc/rtc-stm32.h> for the supported values. Pinctrl state named "default" may be defined to reserve pin for RTC output. + st,alarm: + $ref: "/schemas/types.yaml#/definitions/uint32" + description: | + To select and enable RTC Alarm A output. + Refer to <include/dt-bindings/rtc/rtc-stm32.h> for the supported values. + Pinctrl state named "default" may be defined to reserve pin for RTC output. + allOf: - if: properties:
@@ -75,6 +82,9 @@ allOf: st,lsco: maxItems: 0 + st,alarm: + maxItems: 0 + clock-names: false required:
@@ -95,6 +105,9 @@ allOf: st,lsco: maxItems: 0 + st,alarm: + maxItems: 0 + required: - clock-names - st,syscfg
@@ -117,6 +130,9 @@ allOf: st,lsco: maxItems: 1 + st,alarm: + maxItems: 1 + required: - clock-names
@@ -153,8 +169,9 @@ examples: clocks = <&rcc RTCAPB>, <&rcc RTC>; clock-names = "pclk", "rtc_ck"; interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>; + st,alarm = <RTC_OUT1>; st,lsco = <RTC_OUT2_RMP>; - pinctrl-0 = <&rtc_out2_rmp_pins_a>; + pinctrl-0 = <&rtc_out1_pins_a &rtc_out2_rmp_pins_a>; pinctrl-names = "default"; };
--
2.25.1
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