diff mbox series

[10/10] dt-bindings: rtc: pcf2127: add PCF2131 INT_A and INT_B support

Message ID 20220125200009.900660-11-hugo@hugovil.com
State New
Headers show
Series None | expand

Commit Message

Hugo Villeneuve Jan. 25, 2022, 8 p.m. UTC
From: Hugo Villeneuve <hvilleneuve@dimonoff.com>

The PCF2131 has two output interrupt pins, named INT_A and INT_B.

Add properties to identify onto which pin we want the alarm interrupt
to be routed. It can be either one, or both.

These properties are automatically set to false for variants other
than PCF2131 (ex: PCF2127).

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
---
 .../devicetree/bindings/rtc/nxp,pcf2127.yaml  | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

Comments

Hugo Villeneuve Feb. 10, 2022, 10:12 p.m. UTC | #1
On Tue, 8 Feb 2022 21:20:28 -0600
Rob Herring <robh@kernel.org> wrote:

> On Tue, Jan 25, 2022 at 03:00:09PM -0500, Hugo Villeneuve wrote:
> > From: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> > 
> > The PCF2131 has two output interrupt pins, named INT_A and INT_B.
> > 
> > Add properties to identify onto which pin we want the alarm interrupt
> > to be routed. It can be either one, or both.
> > 
> > These properties are automatically set to false for variants other
> > than PCF2131 (ex: PCF2127).
> > 
> > Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> > ---
> >  .../devicetree/bindings/rtc/nxp,pcf2127.yaml  | 23 +++++++++++++++++++
> >  1 file changed, 23 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
> > index 57eb0a58afa3..83656dd2f97f 100644
> > --- a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
> > +++ b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
> > @@ -24,6 +24,16 @@ properties:
> >    interrupts:
> >      maxItems: 1
> >  
> > +  alarm-output-a:
> 
> nxp,alarm-output-a

Ok, this will be fixed for V2.

Thank you, Hugo.
Hugo Villeneuve Feb. 10, 2022, 10:55 p.m. UTC | #2
On Thu, 10 Feb 2022 23:32:32 +0100
Alexandre Belloni <alexandre.belloni@bootlin.com> wrote:

> On 10/02/2022 17:12:34-0500, Hugo Villeneuve wrote:
> > On Tue, 8 Feb 2022 21:20:28 -0600
> > Rob Herring <robh@kernel.org> wrote:
> > 
> > > On Tue, Jan 25, 2022 at 03:00:09PM -0500, Hugo Villeneuve wrote:
> > > > From: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> > > > 
> > > > The PCF2131 has two output interrupt pins, named INT_A and INT_B.
> > > > 
> > > > Add properties to identify onto which pin we want the alarm interrupt
> > > > to be routed. It can be either one, or both.
> > > > 
> > > > These properties are automatically set to false for variants other
> > > > than PCF2131 (ex: PCF2127).
> > > > 
> > > > Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> > > > ---
> > > >  .../devicetree/bindings/rtc/nxp,pcf2127.yaml  | 23 +++++++++++++++++++
> > > >  1 file changed, 23 insertions(+)
> > > > 
> > > > diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
> > > > index 57eb0a58afa3..83656dd2f97f 100644
> > > > --- a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
> > > > +++ b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
> > > > @@ -24,6 +24,16 @@ properties:
> > > >    interrupts:
> > > >      maxItems: 1
> > > >  
> > > > +  alarm-output-a:
> > > 
> > > nxp,alarm-output-a
> > 
> > Ok, this will be fixed for V2.
> > 
> 
> Actually, this property has to be made more generic and thought out.
> There are multiple RTCs that have multiple interrupt pins where one of
> the pin can be used for different interrupt or clock output.
> 
> With your binding, there is no way to separate which interrupt is going
> to which pin and so there is no way to get the alarm and BLF or the
> watchdog on different pins and we certainly don't want to have a
> property per interrupt type.

Hi,
can you please suggest how you would prefer it to be done?

> Also, the documentation is missing the fact that the driver makes having
> one of the property mandatory.

I will add it.

Thank you, Hugo.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
index 57eb0a58afa3..83656dd2f97f 100644
--- a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
+++ b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
@@ -24,6 +24,16 @@  properties:
   interrupts:
     maxItems: 1
 
+  alarm-output-a:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Enable alarm interrupt on INT_A output pin.
+
+  alarm-output-b:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Enable alarm interrupt on INT_B output pin.
+
   start-year: true
 
   reset-source: true
@@ -32,6 +42,18 @@  required:
   - compatible
   - reg
 
+if:
+  not:
+    properties:
+      compatible:
+        contains:
+          enum:
+            - nxp,pcf2131
+then:
+  properties:
+    alarm-output-a: false
+    alarm-output-b: false
+
 additionalProperties: false
 
 examples:
@@ -62,6 +84,7 @@  examples:
             pinctrl-0 = <&rtc_nint_pins>;
             interrupts-extended = <&gpio1 16 IRQ_TYPE_LEVEL_HIGH>;
             reset-source;
+            alarm-output-b;
         };
     };