[PATCH 0/2] dt-bindings: rtc: Convert to DT schema

[PATCH 0/2] dt-bindings: rtc: Convert to DT schema

[Eduard Bostina]

This series converts the Texas Instruments Palmas RTC bindings to DT schema
and resolves a node name compliance issue.

Patch 1 converts the text binding to DT schema.

Patch 2 updates the tps659038_rtc nodes across the AM57xx device trees 
to use the generic 'rtc' node name.

Eduard Bostina (2):
  dt-bindings: rtc: Convert TI Palmas RTC to DT schema
  ARM: dts: ti: omap: Fix Palmas RTC node names

 .../devicetree/bindings/rtc/rtc-palmas.txt    | 32 -----------
 .../bindings/rtc/ti,palmas-rtc.yaml           | 57 +++++++++++++++++++
 .../boot/dts/ti/omap/am5729-beagleboneai.dts  |  2 +-
 .../dts/ti/omap/am57xx-beagle-x15-common.dtsi |  2 +-
 .../boot/dts/ti/omap/am57xx-idk-common.dtsi   |  2 +-
 5 files changed, 60 insertions(+), 35 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/rtc/rtc-palmas.txt
 create mode 100644 Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml

-- 
2.43.0

[PATCH 1/2] dt-bindings: rtc: Convert TI Palmas RTC to DT schema

[Eduard Bostina]

Convert the Texas Instruments Palmas RTC controller bindings
to DT schema.

As part of the conversion, declare 'wakeup-source: true'.
This documents the Palmas PMIC's capability to wake the system.

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
---
 .../devicetree/bindings/rtc/rtc-palmas.txt    | 32 -----------
 .../bindings/rtc/ti,palmas-rtc.yaml           | 57 +++++++++++++++++++
 2 files changed, 57 insertions(+), 32 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/rtc/rtc-palmas.txt
 create mode 100644 Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml

diff --git a/Documentation/devicetree/bindings/rtc/rtc-palmas.txt b/Documentation/devicetree/bindings/rtc/rtc-palmas.txt
deleted file mode 100644
index c6cf37758a77..000000000000
--- a/Documentation/devicetree/bindings/rtc/rtc-palmas.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-Palmas RTC controller bindings
-
-Required properties:
-- compatible:
-  - "ti,palmas-rtc" for palma series of the RTC controller
-- interrupts: Interrupt number of RTC submodule on device.
-
-Optional properties:
-
-- ti,backup-battery-chargeable: The Palmas series device like TPS65913 or
-	TPS80036 supports the backup battery for powering the RTC when main
-	battery is removed or in very low power state. The backup battery
-	can be chargeable or non-chargeable. This flag will tells whether
-	battery is chargeable or not. If charging battery then driver can
-	enable the charging.
-- ti,backup-battery-charge-high-current: Enable high current charging in
-	backup battery. Device supports the < 100uA and > 100uA charging.
-	The high current will be > 100uA. Absence of this property will
-	charge battery to lower current i.e. < 100uA.
-
-Example:
-	palmas: tps65913@58 {
-		...
-		palmas_rtc: rtc {
-			compatible = "ti,palmas-rtc";
-			interrupt-parent = <&palmas>;
-			interrupts = <8 0>;
-			ti,backup-battery-chargeable;
-			ti,backup-battery-charge-high-current;
-		};
-		...
-	};
diff --git a/Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml b/Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml
new file mode 100644
index 000000000000..ac64f0589c84
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/ti,palmas-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments Palmas RTC
+
+maintainers:
+  - Eduard Bostina <egbostina@gmail.com>
+
+allOf:
+  - $ref: /schemas/rtc/rtc.yaml#
+
+properties:
+  compatible:
+    const: ti,palmas-rtc
+
+  interrupts:
+    maxItems: 1
+
+  wakeup-source: true
+
+  ti,backup-battery-chargeable:
+    type: boolean
+    description:
+      The backup battery can be chargeable or non-chargeable. This flag
+      indicates whether the battery is chargeable. If present, the driver
+      can enable charging.
+
+  ti,backup-battery-charge-high-current:
+    type: boolean
+    description:
+      Enable high current charging in the backup battery.
+      Device supports the < 100uA and > 100uA charging. The high current will
+      be > 100uA. Absence of this property will charge battery to lower
+      current i.e. < 100uA.
+
+required:
+  - compatible
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    pmic {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        rtc {
+            compatible = "ti,palmas-rtc";
+            interrupts = <8 0>;
+            ti,backup-battery-chargeable;
+            ti,backup-battery-charge-high-current;
+        };
+    };
-- 
2.43.0

[PATCH 2/2] ARM: dts: ti: omap: Fix Palmas RTC node names

[Eduard Bostina]

The core RTC Device Tree schema expects RTC nodes to be named generically
('rtc' or 'rtc@...').

Update the tps659038_rtc nodes across the AM57xx device trees to use
the generic 'rtc' node name to resolve dtbs_check warnings.

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
---
 arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts       | 2 +-
 arch/arm/boot/dts/ti/omap/am57xx-beagle-x15-common.dtsi | 2 +-
 arch/arm/boot/dts/ti/omap/am57xx-idk-common.dtsi        | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts b/arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts
index 76bfb364777e..46270ed87377 100644
--- a/arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts
+++ b/arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts
@@ -386,7 +386,7 @@ regen2: regen2 {
 			};
 		};
 
-		tps659038_rtc: tps659038_rtc {
+		tps659038_rtc: rtc {
 			compatible = "ti,palmas-rtc";
 			interrupt-parent = <&tps659038>;
 			interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
diff --git a/arch/arm/boot/dts/ti/omap/am57xx-beagle-x15-common.dtsi b/arch/arm/boot/dts/ti/omap/am57xx-beagle-x15-common.dtsi
index 87b61a98d5e9..e7c186941c23 100644
--- a/arch/arm/boot/dts/ti/omap/am57xx-beagle-x15-common.dtsi
+++ b/arch/arm/boot/dts/ti/omap/am57xx-beagle-x15-common.dtsi
@@ -360,7 +360,7 @@ regen1: regen1 {
 			};
 		};
 
-		tps659038_rtc: tps659038_rtc {
+		tps659038_rtc: rtc {
 			compatible = "ti,palmas-rtc";
 			interrupt-parent = <&tps659038>;
 			interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
diff --git a/arch/arm/boot/dts/ti/omap/am57xx-idk-common.dtsi b/arch/arm/boot/dts/ti/omap/am57xx-idk-common.dtsi
index 5eccff3bb4b6..a2a654ef4ef9 100644
--- a/arch/arm/boot/dts/ti/omap/am57xx-idk-common.dtsi
+++ b/arch/arm/boot/dts/ti/omap/am57xx-idk-common.dtsi
@@ -405,7 +405,7 @@ regen2: regen2 {
 			};
 		};
 
-		tps659038_rtc: tps659038_rtc {
+		tps659038_rtc: rtc {
 			compatible = "ti,palmas-rtc";
 			interrupt-parent = <&tps659038>;
 			interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
-- 
2.43.0

Re: [PATCH 1/2] dt-bindings: rtc: Convert TI Palmas RTC to DT schema

[Alexandre Belloni]

On 19/07/2026 14:10:07+0000, Eduard Bostina wrote:
> Convert the Texas Instruments Palmas RTC controller bindings
> to DT schema.
> 
> As part of the conversion, declare 'wakeup-source: true'.
> This documents the Palmas PMIC's capability to wake the system.
> 
> Signed-off-by: Eduard Bostina <egbostina@gmail.com>
> ---
>  .../devicetree/bindings/rtc/rtc-palmas.txt    | 32 -----------
>  .../bindings/rtc/ti,palmas-rtc.yaml           | 57 +++++++++++++++++++
>  2 files changed, 57 insertions(+), 32 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/rtc/rtc-palmas.txt
>  create mode 100644 Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/rtc/rtc-palmas.txt b/Documentation/devicetree/bindings/rtc/rtc-palmas.txt
> deleted file mode 100644
> index c6cf37758a77..000000000000
> --- a/Documentation/devicetree/bindings/rtc/rtc-palmas.txt
> +++ /dev/null
> @@ -1,32 +0,0 @@
> -Palmas RTC controller bindings
> -
> -Required properties:
> -- compatible:
> -  - "ti,palmas-rtc" for palma series of the RTC controller
> -- interrupts: Interrupt number of RTC submodule on device.
> -
> -Optional properties:
> -
> -- ti,backup-battery-chargeable: The Palmas series device like TPS65913 or
> -	TPS80036 supports the backup battery for powering the RTC when main
> -	battery is removed or in very low power state. The backup battery
> -	can be chargeable or non-chargeable. This flag will tells whether
> -	battery is chargeable or not. If charging battery then driver can
> -	enable the charging.
> -- ti,backup-battery-charge-high-current: Enable high current charging in
> -	backup battery. Device supports the < 100uA and > 100uA charging.
> -	The high current will be > 100uA. Absence of this property will
> -	charge battery to lower current i.e. < 100uA.
> -
> -Example:
> -	palmas: tps65913@58 {
> -		...
> -		palmas_rtc: rtc {
> -			compatible = "ti,palmas-rtc";
> -			interrupt-parent = <&palmas>;
> -			interrupts = <8 0>;
> -			ti,backup-battery-chargeable;
> -			ti,backup-battery-charge-high-current;
> -		};
> -		...
> -	};
> diff --git a/Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml b/Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml
> new file mode 100644
> index 000000000000..ac64f0589c84
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/rtc/ti,palmas-rtc.yaml
> @@ -0,0 +1,57 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/rtc/ti,palmas-rtc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments Palmas RTC
> +
> +maintainers:
> +  - Eduard Bostina <egbostina@gmail.com>
> +
> +allOf:
> +  - $ref: /schemas/rtc/rtc.yaml#
> +
> +properties:
> +  compatible:
> +    const: ti,palmas-rtc
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  wakeup-source: true
> +
> +  ti,backup-battery-chargeable:
> +    type: boolean
> +    description:
> +      The backup battery can be chargeable or non-chargeable. This flag
> +      indicates whether the battery is chargeable. If present, the driver
> +      can enable charging.
> +

It would be great to convert to the genric proeprty which is
aux-voltage-chargeable from rtc.yaml

> +  ti,backup-battery-charge-high-current:
> +    type: boolean
> +    description:
> +      Enable high current charging in the backup battery.
> +      Device supports the < 100uA and > 100uA charging. The high current will
> +      be > 100uA. Absence of this property will charge battery to lower
> +      current i.e. < 100uA.


I guess we could make trickle-resistor-ohms fit or get a new generic
property for this.

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com