From mboxrd@z Thu Jan 1 00:00:00 1970 From: Amelie Delaunay Subject: [PATCHv3 2/8] dt-bindings: document the STM32 RTC bindings Date: Thu, 5 Jan 2017 14:43:23 +0100 Message-ID: <1483623809-29937-3-git-send-email-amelie.delaunay@st.com> References: <1483623809-29937-1-git-send-email-amelie.delaunay@st.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1483623809-29937-1-git-send-email-amelie.delaunay@st.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Alessandro Zummo , Alexandre Belloni , Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre Torgue , Russell King Cc: devicetree@vger.kernel.org, Amelie Delaunay , rtc-linux@googlegroups.com, linux-kernel@vger.kernel.org, Gabriel Fernandez , linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org This patch adds documentation of device tree bindings for the STM32 RTC. Signed-off-by: Amelie Delaunay Acked-by: Rob Herring --- .../devicetree/bindings/rtc/st,stm32-rtc.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt diff --git a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt new file mode 100644 index 0000000..e2837b9 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt @@ -0,0 +1,27 @@ +STM32 Real Time Clock + +Required properties: +- compatible: "st,stm32-rtc". +- reg: address range of rtc register set. +- clocks: reference to the clock entry ck_rtc. +- interrupt-parent: phandle for the interrupt controller. +- interrupts: rtc alarm interrupt. +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain + (RTC registers) write protection. + +Optional properties (to override default ck_rtc parent clock): +- assigned-clocks: reference to the ck_rtc clock entry. +- assigned-clock-parents: phandle of the new parent clock of ck_rtc. + +Example: + + rtc: rtc@40002800 { + compatible = "st,stm32-rtc"; + reg = <0x40002800 0x400>; + clocks = <&rcc 1 CLK_RTC>; + assigned-clocks = <&rcc 1 CLK_RTC>; + assigned-clock-parents = <&rcc 1 CLK_LSE>; + interrupt-parent = <&exti>; + interrupts = <17 1>; + st,syscfg = <&pwrcfg>; + }; -- 1.9.1