mirror of
git://nv-tegra.nvidia.com/linux-nv-oot.git
synced 2025-12-22 09:11:26 +03:00
e7c8a70f65
The CL adds GTE driver support in OOT. The driver is copied from nvidia directory in dev-main with below changes. - Added removable module support This driver as module is needed as per the oot development requirement. Bug 3583612 Change-Id: I2772078fb96e1b172e45befe643b4c7c569866d9 Signed-off-by: Dipen Patel <dipenp@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2706260 Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
79 lines
2.2 KiB
YAML
79 lines
2.2 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/tegra_gte/tegra-gte.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: NVIDIA Tegra T194 GTE (Generic hardware Timestamping Engine) bindings
|
|
|
|
maintainers:
|
|
- Dipen Patel <dipenp@nvidia.com>
|
|
|
|
description: |+
|
|
GTE is a hardware block which monitors various events for the state change and
|
|
timestamps them using TSC counter. Tegra implements LIC GTE and AON GTE
|
|
instances. LIC GTE is used only to monitor LIC IRQ lines and AON GTE is used
|
|
to monitor Always On domain GPIO lines.
|
|
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- nvidia,tegra194-gte-lic
|
|
- nvidia,tegra194-gte-aon
|
|
- nvidia,tegra234-gte-aon
|
|
|
|
reg:
|
|
maxItems: 1
|
|
description: physical base address.
|
|
|
|
interrupts:
|
|
description:
|
|
interrupt number
|
|
|
|
nvidia,int-threshold:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description:
|
|
GTE device generates its interrupt based on this u32 FIFO threshold
|
|
value. The recommended value is 1.
|
|
minimum: 1
|
|
maximum: 256
|
|
|
|
nvidia,num-slices:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description:
|
|
GTE lines are arranged in 32 bit slice where each bit represents different
|
|
line/signal that it can enable/configure for the timestamp. It is u32
|
|
property and the value depends on the GTE instance in the chip. Tegra194
|
|
LIC instance uses 11 slices while Tegra234 instance uses 17 slices to
|
|
represent interrupts line from LIC. The AON-GPIO GTE instances for both
|
|
Tegra194 and Tegra234 use 3 slices for the GPIO.
|
|
enum: [3, 11, 17]
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- interrupts
|
|
- nvidia,num-slices
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
gte@3aa0000 {
|
|
interrupts = <0x00 0x0b 0x04>;
|
|
compatible = "nvidia,tegra194-gte-lic";
|
|
nvidia,int-threshold = <0x01>;
|
|
status = "okay";
|
|
nvidia,num-slices = <0x11>;
|
|
reg = <0x3aa0000 0x10000>;
|
|
};
|
|
|
|
gte@c1e0000 {
|
|
interrupts = <0x00 0x0d 0x04>;
|
|
compatible = "nvidia,tegra234-gte-aon";
|
|
nvidia,int-threshold = <0x01>;
|
|
status = "okay";
|
|
nvidia,num-slices = <0x03>;
|
|
reg = <0xc1e0000 0x10000>;
|
|
};
|