leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

dt-bindings: timer: Add Tegra186 & Tegra234 Timer

Browse Source 
The Tegra186 timer provides ten 29-bit timer counters and one 32-bit
timestamp counter. The Tegra234 timer provides sixteen 29-bit timer
counters and one 32-bit timestamp counter. Each NV timer selects its
timing reference signal from the 1 MHz reference generated by USEC,
TSC or either clk_m or OSC. Each TMR can be programmed to generate
one-shot, periodic, or watchdog interrupts.

Signed-off-by: Kartik <kkartik@nvidia.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Kartik 2022-07-04 13:43:37 +05:30 committed by Thierry Reding
parent 68ce0053f0
commit dd92b16cbc
1 changed files with 109 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

109
Documentation/devicetree/bindings/timer/nvidia,tegra186-timer.yaml Normal file
View File

@ -0,0 +1,109 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/timer/nvidia,tegra186-timer.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: NVIDIA Tegra186 timer
maintainers:
- Thierry Reding <treding@nvidia.com>
description: >
The Tegra timer provides 29-bit timer counters and a 32-bit timestamp
counter. Each NV timer selects its timing reference signal from the 1 MHz
reference generated by USEC, TSC or either clk_m or OSC. Each TMR can be
programmed to generate one-shot, periodic, or watchdog interrupts.
properties:
compatible:
oneOf:
- const: nvidia,tegra186-timer
description: >
The Tegra186 timer provides ten 29-bit timer counters.
- const: nvidia,tegra234-timer
description: >
The Tegra234 timer provides sixteen 29-bit timer counters.
reg:
maxItems: 1
interrupts: true
allOf:
- if:
properties:
compatible:
contains:
const: nvidia,tegra186-timer
then:
properties:
interrupts:
maxItems: 10
description: >
One per each timer channels 0 through 9.
- if:
properties:
compatible:
contains:
const: nvidia,tegra234-timer
then:
properties:
interrupts:
maxItems: 16
description: >
One per each timer channels 0 through 15.
required:
- compatible
- reg
- interrupts
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
timer@3010000 {
compatible = "nvidia,tegra186-timer";
reg = <0x03010000 0x000e0000>;
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
};
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
timer@2080000 {
compatible = "nvidia,tegra234-timer";
reg = <0x02080000 0x00121000>;
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
};