From: Wei Ni <wni@nvidia.com>
To: <thierry.reding@gmail.com>, <daniel.lezcano@linaro.org>,
<edubezval@gmail.com>, <linux-tegra@vger.kernel.org>
Cc: <rui.zhang@intel.com>, <srikars@nvidia.com>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
Wei Ni <wni@nvidia.com>
Subject: [PATCH v1 04/12] of: Add bindings of gpu hw throttle for Tegra soctherm
Date: Tue, 18 Dec 2018 15:34:36 +0800 [thread overview]
Message-ID: <1545118484-23641-6-git-send-email-wni@nvidia.com> (raw)
In-Reply-To: <1545118484-23641-1-git-send-email-wni@nvidia.com>
Add "nvidia,gpu-throt-level" property to set gpu hw
throttle level.
Signed-off-by: Wei Ni <wni@nvidia.com>
---
.../bindings/thermal/nvidia,tegra124-soctherm.txt | 17 +++++++++++++++--
include/dt-bindings/thermal/tegra124-soctherm.h | 22 ++++++++++++++++++----
2 files changed, 33 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt
index ab66d6feab4b..cf6d0be56b7a 100644
--- a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt
+++ b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt
@@ -52,6 +52,15 @@ Required properties :
Must set as following values:
TEGRA_SOCTHERM_THROT_LEVEL_LOW, TEGRA_SOCTHERM_THROT_LEVEL_MED
TEGRA_SOCTHERM_THROT_LEVEL_HIGH, TEGRA_SOCTHERM_THROT_LEVEL_NONE
+ - nvidia,gpu-throt-level: This property is for Tegra124 and Tegra210.
+ It is the level of pulse skippers, which used to throttle clock
+ frequencies. It indicates gpu clock throttling depth and can be
+ programmed to any of the following values which represent a throttling
+ percentage:
+ TEGRA_SOCTHERM_THROT_LEVEL_NONE (0%)
+ TEGRA_SOCTHERM_THROT_LEVEL_LOW (50%),
+ TEGRA_SOCTHERM_THROT_LEVEL_MED (75%),
+ TEGRA_SOCTHERM_THROT_LEVEL_HIGH (85%).
- #cooling-cells: Should be 1. This cooling device only support on/off state.
See ./thermal.txt for a description of this property.
@@ -96,22 +105,26 @@ Example :
throttle-cfgs {
/*
* When the "heavy" cooling device triggered,
- * the HW will skip cpu clock's pulse in 85% depth
+ * the HW will skip cpu clock's pulse in 85% depth,
+ * skip gpu clock's pulse in 85% level
*/
throttle_heavy: heavy {
nvidia,priority = <100>;
nvidia,cpu-throt-percent = <85>;
+ nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_HIGH>;
#cooling-cells = <1>;
};
/*
* When the "light" cooling device triggered,
- * the HW will skip cpu clock's pulse in 50% depth
+ * the HW will skip cpu clock's pulse in 50% depth,
+ * skip gpu clock's pulse in 50% level
*/
throttle_light: light {
nvidia,priority = <80>;
nvidia,cpu-throt-percent = <50>;
+ nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_LOW>;
#cooling-cells = <1>;
};
diff --git a/include/dt-bindings/thermal/tegra124-soctherm.h b/include/dt-bindings/thermal/tegra124-soctherm.h
index c15e8b709a0d..75853df1c609 100644
--- a/include/dt-bindings/thermal/tegra124-soctherm.h
+++ b/include/dt-bindings/thermal/tegra124-soctherm.h
@@ -1,5 +1,19 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
+ * Copyright (c) 2014 - 2018, NVIDIA CORPORATION. All rights reserved.
+ *
+ * Author:
+ * Mikko Perttunen <mperttunen@nvidia.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
* This header provides constants for binding nvidia,tegra124-soctherm.
*/
@@ -12,9 +26,9 @@
#define TEGRA124_SOCTHERM_SENSOR_PLLX 3
#define TEGRA124_SOCTHERM_SENSOR_NUM 4
-#define TEGRA_SOCTHERM_THROT_LEVEL_LOW 0
-#define TEGRA_SOCTHERM_THROT_LEVEL_MED 1
-#define TEGRA_SOCTHERM_THROT_LEVEL_HIGH 2
-#define TEGRA_SOCTHERM_THROT_LEVEL_NONE -1
+#define TEGRA_SOCTHERM_THROT_LEVEL_NONE 0
+#define TEGRA_SOCTHERM_THROT_LEVEL_LOW 1
+#define TEGRA_SOCTHERM_THROT_LEVEL_MED 2
+#define TEGRA_SOCTHERM_THROT_LEVEL_HIGH 3
#endif
--
2.7.4
next prev parent reply other threads:[~2018-12-18 7:35 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-18 7:34 [PATCH v1 00/12] Add some functionalities for Tegra soctherm Wei Ni
2018-12-18 7:34 ` Wei Ni
2019-01-21 9:26 ` Wei Ni
2018-12-18 7:34 ` [PATCH v1 01/12] of: Add bindings of thermtrip " Wei Ni
2018-12-27 23:06 ` Rob Herring
2018-12-28 3:28 ` Wei Ni
2019-02-20 1:22 ` Eduardo Valentin
2019-02-20 8:39 ` Wei Ni
2018-12-18 7:34 ` [PATCH v1 02/12] thermal: tegra: support hw and sw shutdown Wei Ni
2018-12-18 7:34 ` [PATCH v1 03/12] arm64: dts: tegra210: set thermtrip Wei Ni
2018-12-18 7:34 ` Wei Ni [this message]
2019-02-18 20:29 ` [PATCH v1 04/12] of: Add bindings of gpu hw throttle for Tegra soctherm Rob Herring
2019-02-19 6:08 ` Wei Ni
2019-02-18 20:33 ` Rob Herring
2019-02-19 6:34 ` Wei Ni
2018-12-18 7:34 ` [PATCH v1 05/12] thermal: tegra: add support for gpu hw-throttle Wei Ni
2018-12-18 7:34 ` [PATCH v1 06/12] arm64: dts: tegra210: set gpu hw throttle level Wei Ni
2018-12-18 7:34 ` [PATCH v1 07/12] thermal: tegra: add support for thermal IRQ Wei Ni
2018-12-18 7:34 ` [PATCH v1 08/12] thermal: tegra: add set_trips functionality Wei Ni
2018-12-18 7:34 ` [PATCH v1 09/12] thermal: tegra: add support for EDP IRQ Wei Ni
2018-12-18 7:34 ` [PATCH v1 10/12] arm64: dts: tegra210: set EDP interrupt line Wei Ni
2018-12-18 7:34 ` [PATCH v1 11/12] of: Add bindings of OC hw throttle for Tegra soctherm Wei Ni
2019-02-18 20:32 ` Rob Herring
2019-02-19 6:31 ` Wei Ni
2018-12-18 7:34 ` [PATCH v1 12/12] thermal: tegra: enable OC hw throttle Wei Ni
2018-12-18 7:50 ` [PATCH v1 00/12] Add some functionalities for Tegra soctherm Wei Ni
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