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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>, <tglx@linutronix.de>, <robh+dt@kernel.org>,
	<mark.rutland@arm.com>
Cc: <allison@lohutok.net>, <pdeschrijver@nvidia.com>,
	<pgaikwad@nvidia.com>, <mturquette@baylibre.com>,
	<horms+renesas@verge.net.au>, <Jisheng.Zhang@synaptics.com>,
	<krzk@kernel.org>, <arnd@arndb.de>, <spujar@nvidia.com>,
	<josephl@nvidia.com>, <vidyas@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 v2 09/11] dt-bindings: Add Tegra PMC clock configuration bindings
Date: Tue, 26 Nov 2019 20:59:31 -0800
Message-ID: <1574830773-14892-10-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1574830773-14892-1-git-send-email-skomatineni@nvidia.com>

Document clock bindings for pmc clocks clk_out_1, clk_out_2 and clk_out_3.
These clocks are part of Tegra PMC block and pmc node is the provider for
these clocks.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 .../bindings/arm/tegra/nvidia,tegra20-pmc.txt      | 45 +++++++++++++++++++++-
 1 file changed, 44 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
index cb12f33a247f..7e0069b87bc2 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 +305,39 @@ 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 clk_m, clk_m_div2, clk_m_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:
+	host1x@50000000 {
+		...
+		vi@54080000 {
+		...
+		assigned-clocks = <&pmc TEGRA_PMC_CLK_OUT_3_MUX>;
+		assigned-clock-parents = <&tegra_car TEGRA210_CLK_EXTERN3>;
+		};
+		...
+	};
+	...
+	i2c@7000c500 {
+		cam_sensor {
+		...
+		clocks = <&pmc TEGRA_PMC_CLK_OUT_3>;
+		clock-names = "mclk";
+		...
+		};
+	};
-- 
2.7.4


  parent reply index

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-27  4:59 [PATCH v2 00/11] Move PMC clocks into Tegra PMC driver Sowjanya Komatineni
2019-11-27  4:59 ` [PATCH v2 01/11] dt-bindings: soc: tegra-pmc: Add Tegra PMC clock ids Sowjanya Komatineni
2019-11-27  4:59 ` [PATCH v2 02/11] soc: tegra: Add Tegra PMC clock registrations into PMC driver Sowjanya Komatineni
2019-11-27 14:32   ` Dmitry Osipenko
2019-11-27 14:32   ` Dmitry Osipenko
2019-11-27 15:14   ` Dmitry Osipenko
2019-11-27 22:57     ` Sowjanya Komatineni
2019-11-28 13:25       ` Dmitry Osipenko
2019-12-02 20:09         ` Sowjanya Komatineni
2019-12-02 21:50           ` Dmitry Osipenko
2019-12-02 22:58             ` Sowjanya Komatineni
2019-12-02 23:10               ` Sowjanya Komatineni
2019-12-02 23:14                 ` Sowjanya Komatineni
2019-12-03  0:07                   ` Sowjanya Komatineni
2019-12-03 16:45                     ` Sowjanya Komatineni
2019-12-04 13:39                       ` Dmitry Osipenko
2019-12-04 16:02                         ` Sowjanya Komatineni
2019-12-04 20:08                           ` Sowjanya Komatineni
2019-12-04 20:28                             ` Dmitry Osipenko
2019-12-04 20:33                               ` Sowjanya Komatineni
2019-12-04 21:12                                 ` Dmitry Osipenko
2019-12-04 21:26                                   ` Sowjanya Komatineni
2019-11-27  4:59 ` [PATCH v2 03/11] dt-bindings: soc: tegra-pmc: Add id for Tegra PMC blink control Sowjanya Komatineni
2019-11-27  4:59 ` [PATCH v2 04/11] soc: pmc: Add blink output clock registration to Tegra PMC Sowjanya Komatineni
2019-11-28 13:07   ` Dmitry Osipenko
2019-11-27  4:59 ` [PATCH v2 05/11] clk: tegra: Remove tegra_pmc_clk_init along with clk ids Sowjanya Komatineni
2019-11-27  4:59 ` [PATCH v2 06/11] dt-bindings: clock: tegra: Remove pmc clock ids from clock dt-bindings Sowjanya Komatineni
2019-11-27 14:32   ` Dmitry Osipenko
2019-11-27 17:06     ` Sowjanya Komatineni
2019-11-28 12:18     ` Thierry Reding
2019-11-28 13:07       ` Dmitry Osipenko
2019-11-27  4:59 ` [PATCH v2 07/11] arm: tegra: Add clock-cells property to Tegra PMC Sowjanya Komatineni
2019-11-27  4:59 ` [PATCH v2 08/11] arm64: tegra: Add clock-cells property to Tegra pmc Sowjanya Komatineni
2019-11-27  4:59 ` Sowjanya Komatineni [this message]
2019-11-27  4:59 ` [PATCH v2 10/11] arm64: tegra: smaug: Change clk_out_2 provider from tegra_car to pmc Sowjanya Komatineni
2019-11-27  4:59 ` [PATCH v2 11/11] ASoC: nau8825: change Tegra " Sowjanya Komatineni
2019-11-27 14:31 ` [PATCH v2 00/11] Move PMC clocks into Tegra PMC driver Dmitry Osipenko
2019-11-27 17:02   ` Sowjanya Komatineni
2019-11-27 21:38     ` Sowjanya Komatineni
2019-11-28 13:06       ` Dmitry Osipenko
2019-12-02 17:09         ` Dmitry Osipenko
2019-12-02 18:47         ` Sowjanya Komatineni
2019-11-28 12:26   ` Thierry Reding
2019-11-28 13:10     ` Dmitry Osipenko

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