diff mbox

[2/8] dt-bindings: document the STM32 RTC bindings

Message ID 1480687801-19525-4-git-send-email-amelie.delaunay@st.com
State Changes Requested, archived
Headers show

Commit Message

Amelie DELAUNAY Dec. 2, 2016, 2:09 p.m. UTC
This patch adds documentation of device tree bindings for the STM32 RTC.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 .../devicetree/bindings/rtc/st,stm32-rtc.txt       | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt

Comments

Alexandre Belloni Dec. 5, 2016, 10:06 a.m. UTC | #1
Hi,

On 02/12/2016 at 15:09:55 +0100, Amelie Delaunay wrote :
> This patch adds documentation of device tree bindings for the STM32 RTC.
> 
> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
> ---
>  .../devicetree/bindings/rtc/st,stm32-rtc.txt       | 31 ++++++++++++++++++++++
>  1 file changed, 31 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..4578838
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt
> @@ -0,0 +1,31 @@
> +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.
> +- clock-names: name of the clock used. Should be "ck_rtc".

Is this name really useful?

> +- interrupt-parent: phandle for the interrupt controller.
> +- interrupts: rtc alarm interrupt.
> +- interrupt-names: rtc alarm interrupt name, should be "alarm".

Same comment, is this name really useful?
Amelie DELAUNAY Dec. 5, 2016, 10:14 a.m. UTC | #2
Hi Alexandre,

Thanks for reviewing

On 12/05/2016 11:06 AM, Alexandre Belloni wrote:
> Hi,
>
> On 02/12/2016 at 15:09:55 +0100, Amelie Delaunay wrote :
>> This patch adds documentation of device tree bindings for the STM32 RTC.
>>
>> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
>> ---
>>  .../devicetree/bindings/rtc/st,stm32-rtc.txt       | 31 ++++++++++++++++++++++
>>  1 file changed, 31 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..4578838
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt
>> @@ -0,0 +1,31 @@
>> +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.
>> +- clock-names: name of the clock used. Should be "ck_rtc".
>
> Is this name really useful?
You're right, not useful.
>
>> +- interrupt-parent: phandle for the interrupt controller.
>> +- interrupts: rtc alarm interrupt.
>> +- interrupt-names: rtc alarm interrupt name, should be "alarm".
>
> Same comment, is this name really useful?
Ditto.
>
>

Best regards,
Amelie
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diff mbox

Patch

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..4578838
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt
@@ -0,0 +1,31 @@ 
+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.
+- clock-names: name of the clock used. Should be "ck_rtc".
+- interrupt-parent: phandle for the interrupt controller.
+- interrupts: rtc alarm interrupt.
+- interrupt-names: rtc alarm interrupt name, should be "alarm".
+- 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>;
+		clock-names = "ck_rtc";
+		assigned-clocks = <&rcc 1 CLK_RTC>;
+		assigned-clock-parents = <&rcc 1 CLK_LSE>;
+		interrupt-parent = <&exti>;
+		interrupts = <17 1>;
+		interrupt-names = "alarm";
+		st,syscfg = <&pwrcfg>;
+	};