[PATCH v5 1/7] dt-bindings: timer: Add EcoNet EN751221 "HPT" CPU Timer
From: Caleb James DeLisle <cjd@cjdns.fr>
Date: 2025-05-07 13:45:28
Also in:
linux-mediatek, linux-mips, lkml
Subsystem:
clocksource, clockevent drivers, econet mips platform, open firmware and flattened device tree bindings, the rest · Maintainers:
Daniel Lezcano, Thomas Gleixner, Caleb James DeLisle, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add device tree bindings for the so-called high-precision timer (HPT) in the EcoNet EN751221 SoC. Signed-off-by: Caleb James DeLisle <cjd@cjdns.fr> Reviewed-by: Krzysztof Kozlowski <redacted> --- .../bindings/timer/econet,en751221-timer.yaml | 80 +++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/econet,en751221-timer.yaml
diff --git a/Documentation/devicetree/bindings/timer/econet,en751221-timer.yaml b/Documentation/devicetree/bindings/timer/econet,en751221-timer.yaml
new file mode 100644
index 000000000000..c1e7c2b6afde
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/econet,en751221-timer.yaml@@ -0,0 +1,80 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/econet,en751221-timer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: EcoNet EN751221 High Precision Timer (HPT) + +maintainers: + - Caleb James DeLisle <cjd@cjdns.fr> + +description: + The EcoNet High Precision Timer (HPT) is a timer peripheral found in various + EcoNet SoCs, including the EN751221 and EN751627 families. It provides per-VPE + count/compare registers and a per-CPU control register, with a single interrupt + line using a percpu-devid interrupt mechanism. + +properties: + compatible: + oneOf: + - const: econet,en751221-timer + - items: + - const: econet,en751627-timer + - const: econet,en751221-timer + + reg: + minItems: 1 + maxItems: 2 + + interrupts: + maxItems: 1 + description: A percpu-devid timer interrupt shared across CPUs. + + clocks: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + +allOf: + - if: + properties: + compatible: + contains: + const: econet,en751627-timer + then: + properties: + reg: + items: + - description: VPE timers 0 and 1 + - description: VPE timers 2 and 3 + else: + properties: + reg: + items: + - description: VPE timers 0 and 1 + +additionalProperties: false + +examples: + - | + timer@1fbf0400 { + compatible = "econet,en751627-timer", "econet,en751221-timer"; + reg = <0x1fbf0400 0x100>, <0x1fbe0000 0x100>; + interrupt-parent = <&intc>; + interrupts = <30>; + clocks = <&hpt_clock>; + }; + - | + timer@1fbf0400 { + compatible = "econet,en751221-timer"; + reg = <0x1fbe0400 0x100>; + interrupt-parent = <&intc>; + interrupts = <30>; + clocks = <&hpt_clock>; + }; +...
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2.39.5