From: Rajendra Nayak <rnayak@codeaurora.org>
To: andy.gross@linaro.org, robh@kernel.org, viresh.kumar@linaro.org,
sboyd@kernel.org, ulf.hansson@linaro.org,
collinsd@codeaurora.org, mka@chromium.org
Cc: devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Rajendra Nayak <rnayak@codeaurora.org>
Subject: [PATCH v6 01/10] dt-bindings: opp: Introduce qcom-opp bindings
Date: Tue, 11 Dec 2018 15:19:29 +0530 [thread overview]
Message-ID: <20181211094938.25086-2-rnayak@codeaurora.org> (raw)
In-Reply-To: <20181211094938.25086-1-rnayak@codeaurora.org>
On Qualcomm Technologies, Inc. platforms, an OPP node needs
to describe an additional level/corner value that is then communicated
to a remote microprocessor by the CPU, which then takes some
actions (like adjusting voltage values across various rails)
based on the value passed.
Describe these bindings in the qcom-opp bindings document.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../devicetree/bindings/opp/qcom-opp.txt | 25 +++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/devicetree/bindings/opp/qcom-opp.txt
diff --git a/Documentation/devicetree/bindings/opp/qcom-opp.txt b/Documentation/devicetree/bindings/opp/qcom-opp.txt
new file mode 100644
index 000000000000..db4d970c7ec7
--- /dev/null
+++ b/Documentation/devicetree/bindings/opp/qcom-opp.txt
@@ -0,0 +1,25 @@
+Qualcomm OPP bindings to descibe OPP nodes with corner/level values
+
+OPP tables for devices on Qualcomm platforms require an additional
+platform specific corner/level value to be specified.
+This value is passed on to the RPM (Resource Power Manager) by
+the CPU, which then takes the necessary actions to set a voltage
+rail to an appropriate voltage based on the value passed.
+
+The bindings are based on top of the operating-points-v2 bindings
+described in Documentation/devicetree/bindings/opp/opp.txt
+Additional properties are described below.
+
+* OPP Table Node
+
+Required properties:
+- compatible: Allow OPPs to express their compatibility. It should be:
+ "operating-points-v2-qcom-level"
+
+* OPP Node
+
+Required properties:
+- qcom,level: On Qualcomm platforms an OPP node can describe a positive value
+representing a corner/level that's communicated with a remote microprocessor
+(usually called the RPM) which then translates it into a certain voltage on
+a voltage rail.
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2018-12-11 9:49 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 9:49 [PATCH v6 00/10] Add power domain driver for corners on msm8996/sdm845 Rajendra Nayak
2018-12-11 9:49 ` Rajendra Nayak [this message]
2018-12-11 9:49 ` [PATCH v6 02/10] dt-bindings: power: Add qcom rpm power domain driver bindings Rajendra Nayak
2018-12-11 21:28 ` Stephen Boyd
2018-12-11 9:49 ` [PATCH v6 03/10] soc: qcom: rpmpd: Add a Power domain driver to model corners Rajendra Nayak
2018-12-11 21:52 ` Stephen Boyd
2018-12-11 9:49 ` [PATCH v6 04/10] soc: qcom: rpmpd: Add support for get/set performance state Rajendra Nayak
2018-12-11 9:49 ` [PATCH v6 05/10] arm64: dts: msm8996: Add rpmpd device node Rajendra Nayak
2018-12-11 21:53 ` Stephen Boyd
2018-12-11 9:49 ` [PATCH v6 06/10] soc: qcom: rpmhpd: Add RPMh power domain driver Rajendra Nayak
2018-12-11 22:01 ` Stephen Boyd
2018-12-12 5:04 ` Rajendra Nayak
2018-12-11 9:49 ` [PATCH v6 07/10] arm64: dts: sdm845: Add rpmh powercontroller node Rajendra Nayak
2018-12-11 22:01 ` Stephen Boyd
2018-12-11 9:49 ` [PATCH v6 08/10] PM / Domains: Add a simple_opp_to_performance_state() helper Rajendra Nayak
2018-12-11 21:33 ` Stephen Boyd
2018-12-11 9:49 ` [PATCH v6 09/10] soc: qcom: rpmpd: Use " Rajendra Nayak
2018-12-11 21:34 ` Stephen Boyd
2018-12-11 9:49 ` [PATCH v6 10/10] soc: qcom: rpmhpd: Mark mx as a parent for cx Rajendra Nayak
2018-12-11 10:22 ` Ulf Hansson
2018-12-11 10:33 ` Rajendra Nayak
2018-12-11 21:50 ` Stephen Boyd
2018-12-12 4:13 ` Rajendra Nayak
2018-12-12 18:32 ` Stephen Boyd
2018-12-13 16:02 ` Ulf Hansson
2018-12-11 21:51 ` [PATCH v6 00/10] Add power domain driver for corners on msm8996/sdm845 Stephen Boyd
2018-12-12 4:17 ` Rajendra Nayak
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