[PATCH v7 1/3] dt-bindings: timer: mips,p8700-gcru
From: Aleksa Paunovic via B4 Relay <devnull+aleksa.paunovic.htecgroup.com@kernel.org>
Date: 2026-03-11 13:27:14
Also in:
b4-sent, linux-riscv, lkml
Subsystem:
clocksource, clockevent drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Daniel Lezcano, Thomas Gleixner, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Aleksa Paunovic <redacted> Add dt-bindings for the GCR.U memory mapped timer device for RISC-V platforms. The GCR.U memory region contains shadow copies of the RISC-V mtime register and the hrtime Global Configuration Register. Signed-off-by: Aleksa Paunovic <redacted> Acked-by: Conor Dooley <conor.dooley@microchip.com> --- .../devicetree/bindings/timer/mips,p8700-gcru.yaml | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+)
diff --git a/Documentation/devicetree/bindings/timer/mips,p8700-gcru.yaml b/Documentation/devicetree/bindings/timer/mips,p8700-gcru.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..3498255762cce6b3f491292d340d9639bb573e6d
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/mips,p8700-gcru.yaml@@ -0,0 +1,38 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/mips,p8700-gcru.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GCR.U timer device for the MIPS P8700 platform + +maintainers: + - Aleksa Paunovic <aleksa.paunovic@htecgroup.com> + +description: + The GCR.U memory region contains memory mapped shadow copies of + mtime and hrtime Global Configuration Registers, + which software can choose to make accessible from user mode. + +properties: + compatible: + const: mips,p8700-gcru + + reg: + items: + - description: Read-only shadow copy of the RISC-V mtime register. + - description: Read-only shadow copy of the P8700 high resolution timer register. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + timer@1617f000 { + compatible = "mips,p8700-gcru"; + reg = <0x1617f050 0x8>, + <0x1617f090 0x8>; + };
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2.43.0