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dt-bindings: soc: tegra-pmc: Add Tegra PMC clock bindings

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Tegra PMC has 3 clocks clk_out_1, clk_out_2, and clk_out_3.

This patch documents PMC clock bindings and adds a header defining
Tegra PMC clock ids.

Tested-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Sowjanya Komatineni 2020-01-13 23:24:12 -08:00 committed by Thierry Reding
parent 39faeba707
commit f85fa3198d
2 changed files with 27 additions and 0 deletions
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12
Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml
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@ -40,6 +40,15 @@ properties:
Must contain an entry for each entry in clock-names. Must contain an entry for each entry in clock-names.
See ../clocks/clocks-bindings.txt for details. See ../clocks/clocks-bindings.txt for details.
'#clock-cells':
const: 1
description:
Tegra PMC has clk_out_1, clk_out_2, and clk_out_3.
Consumer of PMC clock should specify the desired clock by having
the clock ID in its "clocks" phandle cell with pmc clock provider.
See include/dt-bindings/soc/tegra-pmc.h for the list of Tegra PMC
clock IDs.
'#interrupt-cells': '#interrupt-cells':
const: 2 const: 2
description: description:
@ -296,6 +305,7 @@ required:
- reg - reg
- clock-names - clock-names
- clocks - clocks
- '#clock-cells'
dependencies: dependencies:
"nvidia,suspend-mode": ["nvidia,core-pwr-off-time", "nvidia,cpu-pwr-off-time"] "nvidia,suspend-mode": ["nvidia,core-pwr-off-time", "nvidia,cpu-pwr-off-time"]
@ -307,12 +317,14 @@ examples:
#include <dt-bindings/clock/tegra210-car.h> #include <dt-bindings/clock/tegra210-car.h>
#include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h> #include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h>
#include <dt-bindings/soc/tegra-pmc.h>
tegra_pmc: pmc@7000e400 { tegra_pmc: pmc@7000e400 {
compatible = "nvidia,tegra210-pmc"; compatible = "nvidia,tegra210-pmc";
reg = <0x0 0x7000e400 0x0 0x400>; reg = <0x0 0x7000e400 0x0 0x400>;
clocks = <&tegra_car TEGRA210_CLK_PCLK>, <&clk32k_in>; clocks = <&tegra_car TEGRA210_CLK_PCLK>, <&clk32k_in>;
clock-names = "pclk", "clk32k_in"; clock-names = "pclk", "clk32k_in";
#clock-cells = <1>;
nvidia,invert-interrupt; nvidia,invert-interrupt;
nvidia,suspend-mode = <0>; nvidia,suspend-mode = <0>;

15
include/dt-bindings/soc/tegra-pmc.h Normal file
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@ -0,0 +1,15 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2019-2020, NVIDIA CORPORATION. All rights reserved.
*/
#ifndef _DT_BINDINGS_SOC_TEGRA_PMC_H
#define _DT_BINDINGS_SOC_TEGRA_PMC_H
#define TEGRA_PMC_CLK_OUT_1 0
#define TEGRA_PMC_CLK_OUT_2 1
#define TEGRA_PMC_CLK_OUT_3 2
#define TEGRA_PMC_CLK_MAX 3
#endif /* _DT_BINDINGS_SOC_TEGRA_PMC_H */