linux-kernel - [PATCH v2 1/2] dt-bindings: rtc: brcm,brcmstb-waketimer: add alarm interrupt

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Message-Id: <20230124201430.2502371-2-opendmb@gmail.com>
Date:   Tue, 24 Jan 2023 12:14:29 -0800
From:   Doug Berger <opendmb@...il.com>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Brian Norris <computersforpeace@...il.com>,
        Markus Mayer <mmayer@...adcom.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>, linux-rtc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Doug Berger <opendmb@...il.com>
Subject: [PATCH v2 1/2] dt-bindings: rtc: brcm,brcmstb-waketimer: add alarm interrupt

A second interrupt can optionally be specified for this device
to be used for generating RTC alarm interrupts.

Signed-off-by: Doug Berger <opendmb@...il.com>
---
 .../bindings/rtc/brcm,brcmstb-waketimer.yaml  | 21 ++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/rtc/brcm,brcmstb-waketimer.yaml b/Documentation/devicetree/bindings/rtc/brcm,brcmstb-waketimer.yaml
index 9fe079917a98..c6c57636c729 100644
--- a/Documentation/devicetree/bindings/rtc/brcm,brcmstb-waketimer.yaml
+++ b/Documentation/devicetree/bindings/rtc/brcm,brcmstb-waketimer.yaml
@@ -11,7 +11,8 @@ maintainers:
 
 description:
   The Broadcom STB wake-up timer provides a 27Mhz resolution timer, with the
-  ability to wake up the system from low-power suspend/standby modes.
+  ability to wake up the system from low-power suspend/standby modes and
+  optionally generate RTC alarm interrupts.
 
 allOf:
   - $ref: "rtc.yaml#"
@@ -24,8 +25,14 @@ properties:
     maxItems: 1
 
   interrupts:
-    description: the TIMER interrupt
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: the TIMER interrupt
+      - description: the ALARM interrupt
+    description:
+      The TIMER interrupt wakes the system from low-power suspend/standby modes.
+      An ALARM interrupt may be specified to interrupt the CPU when an RTC alarm
+      is enabled.
 
   clocks:
     description: clock reference in the 27MHz domain
@@ -35,10 +42,10 @@ additionalProperties: false
 
 examples:
   - |
-    rtc@...11580 {
+    rtc@...1a080 {
         compatible = "brcm,brcmstb-waketimer";
-        reg = <0xf0411580 0x14>;
-        interrupts = <0x3>;
-        interrupt-parent = <&aon_pm_l2_intc>;
+        reg = <0xf041a080 0x14>;
+        interrupts-extended = <&aon_pm_l2_intc 0x04>,
+                              <&upg_aux_aon_intr2_intc 0x08>;
         clocks = <&upg_fixed>;
     };
-- 
2.25.1