linux-kernel - [PATCH 1/8] dt-bindings: mfd: stm32-lptimer: add support for stm32mp25

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Message-ID: <20250224180150.3689638-2-fabrice.gasnier@foss.st.com>
Date: Mon, 24 Feb 2025 19:01:43 +0100
From: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
To: <lee@...nel.org>, <ukleinek@...nel.org>, <alexandre.torgue@...s.st.com>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <wbg@...nel.org>, <jic23@...nel.org>, <daniel.lezcano@...aro.org>,
        <tglx@...utronix.de>
CC: <catalin.marinas@....com>, <will@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <linux-iio@...r.kernel.org>, <linux-pwm@...r.kernel.org>,
        <olivier.moysan@...s.st.com>, <fabrice.gasnier@...s.st.com>
Subject: [PATCH 1/8] dt-bindings: mfd: stm32-lptimer: add support for stm32mp25

Add a new stm32mp25 compatible to stm32-lptimer dt-bindings, to support
STM32MP25 SoC. Some features has been added to the low-power timer like
new capture compare channels (hence more PWM channels, and PWM input
capture). Some registers/bits has been revisited to support this.
So introduce a new compatible to handle this diversity.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
---
 .../bindings/mfd/st,stm32-lptimer.yaml        | 23 +++++++++++++++----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml b/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml
index d41308856408..4822ce5d0c76 100644
--- a/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml
+++ b/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml
@@ -21,7 +21,9 @@ maintainers:
 
 properties:
   compatible:
-    const: st,stm32-lptimer
+    enum:
+      - st,stm32-lptimer
+      - st,stm32mp25-lptimer
 
   reg:
     maxItems: 1
@@ -48,13 +50,18 @@ properties:
     minItems: 1
     maxItems: 2
 
+  power-domains:
+    maxItems: 1
+
   pwm:
     type: object
     additionalProperties: false
 
     properties:
       compatible:
-        const: st,stm32-pwm-lp
+        enum:
+          - st,stm32-pwm-lp
+          - st,stm32mp25-pwm-lp
 
       "#pwm-cells":
         const: 3
@@ -69,7 +76,9 @@ properties:
 
     properties:
       compatible:
-        const: st,stm32-lptimer-counter
+        enum:
+          - st,stm32-lptimer-counter
+          - st,stm32mp25-lptimer-counter
 
     required:
       - compatible
@@ -80,7 +89,9 @@ properties:
 
     properties:
       compatible:
-        const: st,stm32-lptimer-timer
+        enum:
+          - st,stm32-lptimer-timer
+          - st,stm32mp25-lptimer-timer
 
     required:
       - compatible
@@ -92,7 +103,9 @@ patternProperties:
 
     properties:
       compatible:
-        const: st,stm32-lptimer-trigger
+        enum:
+          - st,stm32-lptimer-trigger
+          - st,stm32mp25-lptimer-trigger
 
       reg:
         description: Identify trigger hardware block.
-- 
2.25.1