From: Mikko Perttunen <mikko.perttunen@kapsi.fi>
To: swarren@wwwdotorg.org, thierry.reding@gmail.com,
gnurou@gmail.com, pdeschrijver@nvidia.com, rjw@rjwysocki.net,
viresh.kumar@linaro.org
Cc: mturquette@linaro.org, pwalmsley@nvidia.com, vinceh@nvidia.com,
pgaikwad@nvidia.com, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, tuomas.tynkkynen@iki.fi,
Tuomas Tynkkynen <ttynkkynen@nvidia.com>,
Mikko Perttunen <mikko.perttunen@kapsi.fi>
Subject: [PATCH v7 11/16] cpufreq: tegra124: Add device tree bindings
Date: Thu, 8 Jan 2015 15:22:14 +0200 [thread overview]
Message-ID: <1420723339-30735-12-git-send-email-mikko.perttunen@kapsi.fi> (raw)
In-Reply-To: <1420723339-30735-1-git-send-email-mikko.perttunen@kapsi.fi>
From: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
The cpufreq driver for Tegra124 will be a different one than the old
Tegra20 cpufreq driver (tegra-cpufreq), which does not use the device
tree.
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
---
.../bindings/cpufreq/tegra124-cpufreq.txt | 44 ++++++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 Documentation/devicetree/bindings/cpufreq/tegra124-cpufreq.txt
diff --git a/Documentation/devicetree/bindings/cpufreq/tegra124-cpufreq.txt b/Documentation/devicetree/bindings/cpufreq/tegra124-cpufreq.txt
new file mode 100644
index 0000000..b1669fb
--- /dev/null
+++ b/Documentation/devicetree/bindings/cpufreq/tegra124-cpufreq.txt
@@ -0,0 +1,44 @@
+Tegra124 CPU frequency scaling driver bindings
+----------------------------------------------
+
+Both required and optional properties listed below must be defined
+under node /cpus/cpu@0.
+
+Required properties:
+- clocks: Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+- clock-names: Must include the following entries:
+ - cpu_g: Clock mux for the fast CPU cluster.
+ - cpu_lp: Clock mux for the low-power CPU cluster.
+ - pll_x: Fast PLL clocksource.
+ - pll_p: Auxiliary PLL used during fast PLL rate changes.
+ - dfll: Fast DFLL clocksource that also automatically scales CPU voltage.
+- vdd-cpu-supply: Regulator for CPU voltage
+
+Optional properties:
+- clock-latency: Specify the possible maximum transition latency for clock,
+ in unit of nanoseconds.
+
+Example:
+--------
+cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a15";
+ reg = <0>;
+
+ clocks = <&tegra_car TEGRA124_CLK_CCLK_G>,
+ <&tegra_car TEGRA124_CLK_CCLK_LP>,
+ <&tegra_car TEGRA124_CLK_PLL_X>,
+ <&tegra_car TEGRA124_CLK_PLL_P>,
+ <&dfll>;
+ clock-names = "cpu_g", "cpu_lp", "pll_x", "pll_p", "dfll";
+ clock-latency = <300000>;
+ vdd-cpu-supply: <&vdd_cpu>;
+ };
+
+ <...>
+};
--
2.2.1
next prev parent reply other threads:[~2015-01-08 13:28 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-08 13:22 [PATCH v7 00/16] Tegra124 CL-DVFS / DFLL clocksource + cpufreq Mikko Perttunen
2015-01-08 13:22 ` [PATCH v7 01/16] clk: tegra: Add binding for the Tegra124 DFLL clocksource Mikko Perttunen
2015-02-12 13:54 ` Peter De Schrijver
2015-02-13 10:19 ` Mikko Perttunen
2015-02-12 22:42 ` Thierry Reding
2015-02-13 9:38 ` Peter De Schrijver
2015-02-13 10:18 ` Mikko Perttunen
2015-02-16 7:11 ` Tuomas Tynkkynen
2015-01-08 13:22 ` [PATCH v7 02/16] clk: tegra: Add library for the DFLL clock source (open-loop mode) Mikko Perttunen
2015-02-12 14:04 ` Peter De Schrijver
2015-01-08 13:22 ` [PATCH v7 03/16] clk: tegra: Add closed loop support for the DFLL Mikko Perttunen
2015-02-12 14:12 ` Peter De Schrijver
2015-01-08 13:22 ` [PATCH v7 04/16] clk: tegra: Add functions for parsing CVB tables Mikko Perttunen
2015-02-12 14:13 ` Peter De Schrijver
2015-01-08 13:22 ` [PATCH v7 05/16] clk: tegra: Add DFLL DVCO reset control for Tegra124 Mikko Perttunen
2015-02-12 14:19 ` Peter De Schrijver
2015-02-13 10:39 ` Mikko Perttunen
2015-02-16 9:40 ` Peter De Schrijver
2015-01-08 13:22 ` [PATCH v7 06/16] clk: tegra: Add Tegra124 DFLL clocksource platform driver Mikko Perttunen
2015-01-08 13:22 ` [PATCH v7 07/16] clk: tegra: Save/restore CCLKG_BURST_POLICY on suspend Mikko Perttunen
2015-02-12 14:24 ` Peter De Schrijver
2015-01-08 13:22 ` [PATCH v7 08/16] clk: tegra: Add the DFLL as a possible parent of the cclk_g clock Mikko Perttunen
2015-01-08 13:22 ` [PATCH v7 09/16] ARM: tegra: Add the DFLL to Tegra124 device tree Mikko Perttunen
2015-01-08 13:22 ` [PATCH v7 10/16] ARM: tegra: Enable the DFLL on the Jetson TK1 Mikko Perttunen
2015-01-08 13:22 ` Mikko Perttunen [this message]
2015-01-08 13:22 ` [PATCH v7 12/16] cpufreq: tegra: Rename tegra-cpufreq to tegra20-cpufreq Mikko Perttunen
2015-01-08 13:22 ` [PATCH v7 13/16] cpufreq: Add cpufreq driver for Tegra124 Mikko Perttunen
2015-01-08 13:22 ` [PATCH v7 14/16] ARM: tegra: Add entries for cpufreq on Tegra124 Mikko Perttunen
2015-01-08 13:22 ` [PATCH v7 15/16] ARM: tegra: Add CPU regulator to the Jetson TK1 device tree Mikko Perttunen
2015-01-08 13:22 ` [PATCH v7 16/16] ARM: tegra: enable Tegra124 cpufreq driver by default Mikko Perttunen
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