[PATCH v2 2/4] dt-bindings: timer: atmel,at91sam9260-pit: convert to yaml

Claudiu Beznea
2023-05-29T06:27:16Z

Convert Microchip AT91 PIT bindings to YAML. Along with it clocks and
clock-names bindings were added as the drivers needs it to ensure proper
hardware functionality.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
.../devicetree/bindings/arm/atmel-sysregs.txt | 12 ---
.../bindings/timer/atmel,at91sam9260-pit.yaml | 96 +++++++++++++++++++
2 files changed, 96 insertions(+), 12 deletions(-)
create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml

diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
index 67a66bf74895..54d3f586403e 100644
--- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
@@ -4,18 +4,6 @@ Chipid required properties:
- compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
- reg : Should contain registers location and length

-PIT Timer required properties:
-- compatible: Should be "atmel,at91sam9260-pit"
-- reg: Should contain registers location and length
-- interrupts: Should contain interrupt for the PIT which is the IRQ line
- shared across all System Controller members.
-
-PIT64B Timer required properties:
-- compatible: Should be "microchip,sam9x60-pit64b"
-- reg: Should contain registers location and length
-- interrupts: Should contain interrupt for PIT64B timer
-- clocks: Should contain the available clock sources for PIT64B timer.
-
System Timer (ST) required properties:
- compatible: Should be "atmel,at91rm9200-st", "syscon", "simple-mfd"
- reg: Should contain registers location and length
diff --git a/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml b/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
new file mode 100644
index 000000000000..1cc7b7494e4b
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/atmel,at91sam9260-pit.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip AT91 Periodic Interval Timer (PIT)
+
+maintainers:
+ - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description:
+ Microchip AT91 periodic interval timer provides the operating system scheduler
+ interrupt. It is designed to offer maximum accuracy and efficient management,
+ even for systems with long response time.
+
+properties:
+ compatible:
+ enum:
+ - atmel,at91sam9260-pit
+ - microchip,sam9x60-pit64b
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: atmel,at91sam9260-pit
+ then:
+ properties:
+ interrupts:
+ description:
+ Contain interrupt for the PIT which is the IRQ line shared across all
+ System Controller members.
+ clocks:
+ maxItems: 1
+
+ else:
+ properties:
+ interrupts:
+ description:
+ PIT64B peripheral interrupt identifier.
+ clocks:
+ minItems: 2
+ clock-names:
+ items:
+ - const: pclk
+ - const: gclk
+ required:
+ - clock-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ /* AT91RM9200 */
+ #include <dt-bindings/clock/at91.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ pit: timer@fffffe40 {
+ compatible = "atmel,at91sam9260-pit";
+ reg = <0xfffffe40 0x10>;
+ interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ clocks = <&pmc PMC_TYPE_CORE PMC_MCK>;
+ };
+
+ - |
+ /* SAM9X60 */
+ #include <dt-bindings/clock/at91.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ pit64b: timer@f0028000 {
+ compatible = "microchip,sam9x60-pit64b";
+ reg = <0xf0028000 0x100>;
+ interrupts = <37 IRQ_TYPE_LEVEL_HIGH 7>;
+ clocks = <&pmc PMC_TYPE_PERIPHERAL 37>, <&pmc PMC_TYPE_GCK 37>;
+ clock-names = "pclk", "gclk";
+ };
+
+...
--
2.34.1