From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: <skomatineni@nvidia.com>, <thierry.reding@gmail.com>,
<jonathanh@nvidia.com>, <digetx@gmail.com>,
<mperttunen@nvidia.com>, <gregkh@linuxfoundation.org>,
<sboyd@kernel.org>, <robh+dt@kernel.org>, <mark.rutland@arm.com>
Cc: <pdeschrijver@nvidia.com>, <pgaikwad@nvidia.com>,
<spujar@nvidia.com>, <josephl@nvidia.com>,
<daniel.lezcano@linaro.org>, <mmaddireddy@nvidia.com>,
<markz@nvidia.com>, <devicetree@vger.kernel.org>,
<linux-clk@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v4 05/19] dt-bindings: soc: tegra-pmc: Add Tegra PMC clock bindings
Date: Tue, 17 Dec 2019 12:03:52 -0800 [thread overview]
Message-ID: <1576613046-17159-6-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1576613046-17159-1-git-send-email-skomatineni@nvidia.com>
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.
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
.../bindings/arm/tegra/nvidia,tegra20-pmc.txt | 37 +++++++++++++++++++++-
include/dt-bindings/soc/tegra-pmc.h | 15 +++++++++
2 files changed, 51 insertions(+), 1 deletion(-)
create mode 100644 include/dt-bindings/soc/tegra-pmc.h
diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
index cb12f33a247f..80cdcad4ab8c 100644
--- a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
+++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
@@ -21,6 +21,10 @@ Required properties:
- clock-names : Must include the following entries:
"pclk" (The Tegra clock of that name),
"clk32k_in" (The 32KHz clock input to Tegra).
+- #clock-cells : Should be 1 for Tegra30 and higher.
+ In clock consumers, this cell represents the PMC clock ID.
+ The assignments may be found in header file
+ <dt-bindings/soc/tegra-pmc.h>.
Optional properties:
- nvidia,invert-interrupt : If present, inverts the PMU interrupt signal.
@@ -80,11 +84,12 @@ Optional nodes:
Example:
/ SoC dts including file
-pmc@7000f400 {
+pmc: pmc@7000f400 {
compatible = "nvidia,tegra20-pmc";
reg = <0x7000e400 0x400>;
clocks = <&tegra_car 110>, <&clk32k_in>;
clock-names = "pclk", "clk32k_in";
+ #clock-cells = <1>;
nvidia,invert-interrupt;
nvidia,suspend-mode = <1>;
nvidia,cpu-pwr-good-time = <2000>;
@@ -171,6 +176,7 @@ Example:
reg = <0x0 0x7000e400 0x0 0x400>;
clocks = <&tegra_car TEGRA210_CLK_PCLK>, <&clk32k_in>;
clock-names = "pclk", "clk32k_in";
+ #clock-cells = <1>;
powergates {
pd_audio: aud {
@@ -260,6 +266,7 @@ Pad configuration state example:
reg = <0x0 0x7000e400 0x0 0x400>;
clocks = <&tegra_car TEGRA210_CLK_PCLK>, <&clk32k_in>;
clock-names = "pclk", "clk32k_in";
+ #clock-cells = <1>;
...
@@ -298,3 +305,31 @@ Pinctrl client example:
pinctrl-1 = <&hdmi_on>;
pinctrl-names = "hdmi-on", "hdmi-off";
};
+
+== Clock Control ==
+
+Tegra PMC has 3 clocks clk_1, clk_2 and clk_3. Each of these clocks has
+source selection and enable/disable gate.
+Parent/source for these clocks can be either of osc, osc_div2, osc_div4,
+or extern clock from Tegra CAR module.
+
+Clock configuration example:
+ pmc: pmc@7000e400 {
+ compatible = "nvidia,tegra210-pmc";
+ reg = <0x0 0x7000e400 0x0 0x400>;
+ clocks = <&tegra_car TEGRA210_CLK_PCLK>, <&clk32k_in>;
+ clock-names = "pclk", "clk32k_in";
+ #clock-cells = <1>;
+ };
+
+Clock consumer example:
+ i2c@7000c500 {
+ cam_sensor {
+ ...
+ clocks = <&pmc TEGRA_PMC_CLK_OUT_3>;
+ clock-names = "mclk";
+ assigned-clocks = <&pmc TEGRA_PMC_CLK_OUT_3>;
+ assigned-clock-parents = <&tegra_car TEGRA210_CLK_EXTERN3>;
+ ...
+ };
+ };
diff --git a/include/dt-bindings/soc/tegra-pmc.h b/include/dt-bindings/soc/tegra-pmc.h
new file mode 100644
index 000000000000..f7c866404456
--- /dev/null
+++ b/include/dt-bindings/soc/tegra-pmc.h
@@ -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 */
--
2.7.4
next prev parent reply other threads:[~2019-12-17 20:05 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-17 20:03 [PATCH v4 00/19] Move PMC clocks into Tegra PMC driver Sowjanya Komatineni
2019-12-17 20:03 ` [PATCH v4 01/19] dt-bindings: clock: tegra: Change CLK_M_DIV to OSC_DIV clocks Sowjanya Komatineni
2019-12-18 21:19 ` Rob Herring
2019-12-17 20:03 ` [PATCH v4 02/19] clk: tegra: Change CLK_M_DIV clocks " Sowjanya Komatineni
2019-12-17 20:03 ` [PATCH v4 03/19] clk: tegra: Fix Tegra PMC clock out parents Sowjanya Komatineni
2019-12-17 20:03 ` [PATCH v4 04/19] dt-bindings: tegra: Convert Tegra PMC bindings to YAML Sowjanya Komatineni
2019-12-18 21:29 ` Rob Herring
2019-12-18 22:31 ` Sowjanya Komatineni
2019-12-17 20:03 ` Sowjanya Komatineni [this message]
2019-12-18 7:56 ` [PATCH v4 05/19] dt-bindings: soc: tegra-pmc: Add Tegra PMC clock bindings Dmitry Osipenko
2019-12-17 20:03 ` [PATCH v4 06/19] soc: tegra: Add Tegra PMC clock registrations into PMC driver Sowjanya Komatineni
2019-12-18 8:30 ` Dmitry Osipenko
2019-12-18 8:35 ` Dmitry Osipenko
2019-12-18 15:46 ` Sowjanya Komatineni
2019-12-18 15:50 ` Sowjanya Komatineni
2019-12-18 16:52 ` Dmitry Osipenko
2019-12-18 17:00 ` Sowjanya Komatineni
2019-12-18 16:48 ` Dmitry Osipenko
2019-12-18 21:44 ` Dmitry Osipenko
2019-12-19 0:41 ` Sowjanya Komatineni
2019-12-20 1:21 ` Sowjanya Komatineni
2019-12-20 1:39 ` Dmitry Osipenko
2019-12-20 4:13 ` Sowjanya Komatineni
2019-12-20 4:34 ` Dmitry Osipenko
2019-12-20 19:06 ` Sowjanya Komatineni
2019-12-17 20:03 ` [PATCH v4 07/19] dt-bindings: soc: tegra-pmc: Add id for Tegra PMC 32KHz blink clock Sowjanya Komatineni
2019-12-18 21:30 ` Rob Herring
2019-12-17 20:03 ` [PATCH v4 08/19] soc: tegra: Add support for " Sowjanya Komatineni
2019-12-18 5:08 ` Dmitry Osipenko
2019-12-17 20:03 ` [PATCH v4 09/19] clk: tegra: Remove tegra_pmc_clk_init along with clk ids Sowjanya Komatineni
2019-12-17 20:03 ` [PATCH v4 10/19] dt-bindings: clock: tegra: Remove pmc clock ids from clock dt-bindings Sowjanya Komatineni
2019-12-18 21:32 ` Rob Herring
2019-12-17 20:03 ` [PATCH v4 11/19] ASoC: tegra: Use device managed resource APIs to get the clock Sowjanya Komatineni
2019-12-17 20:03 ` [PATCH v4 12/19] ASoC: tegra: Add initial parent configuration for audio mclk Sowjanya Komatineni
2019-12-17 20:04 ` [PATCH v4 13/19] ASoC: tegra: Add fallback implementation " Sowjanya Komatineni
2019-12-18 6:59 ` Dmitry Osipenko
2019-12-18 7:01 ` Dmitry Osipenko
2019-12-18 7:14 ` Sowjanya Komatineni
2019-12-18 7:22 ` Dmitry Osipenko
2019-12-18 7:31 ` Dmitry Osipenko
2019-12-18 15:43 ` Sowjanya Komatineni
2019-12-18 16:29 ` Dmitry Osipenko
2019-12-18 16:32 ` Sowjanya Komatineni
2019-12-18 16:34 ` Dmitry Osipenko
2019-12-17 20:04 ` [PATCH v4 14/19] clk: tegra: Remove audio related clock enables from clocks init_table Sowjanya Komatineni
2019-12-17 20:04 ` [PATCH v4 15/19] ARM: dts: tegra: Add clock-cells property to pmc Sowjanya Komatineni
2019-12-18 21:36 ` Dmitry Osipenko
2019-12-17 20:04 ` [PATCH v4 16/19] arm64: tegra: Add clock-cells property to Tegra PMC node Sowjanya Komatineni
2019-12-17 20:04 ` [PATCH v4 17/19] ARM: tegra: Update sound node clocks in device tree Sowjanya Komatineni
2019-12-18 6:39 ` Dmitry Osipenko
2019-12-18 7:47 ` Dmitry Osipenko
2019-12-17 20:04 ` [PATCH v4 18/19] arm64: tegra: smaug: Change clk_out_2 provider to pmc Sowjanya Komatineni
2019-12-17 20:04 ` [PATCH v4 19/19] ASoC: nau8825: change Tegra clk_out_2 provider from tegra_car " Sowjanya Komatineni
2019-12-18 21:32 ` Rob Herring
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