From: Sumit Gupta <sumitg@nvidia.com>
To: <rjw@rjwysocki.net>, <viresh.kumar@linaro.org>,
<catalin.marinas@arm.com>, <will@kernel.org>,
<thierry.reding@gmail.com>, <robh+dt@kernel.org>,
<mirq-linux@rere.qmqm.pl>, <devicetree@vger.kernel.org>,
<jonathanh@nvidia.com>, <talho@nvidia.com>,
<linux-pm@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Cc: sumitg@nvidia.com, bbasu@nvidia.com, mperttunen@nvidia.com
Subject: [TEGRA194_CPUFREQ PATCH v5 1/4] dt-bindings: arm: Add t194 ccplex compatible and bpmp property
Date: Mon, 13 Jul 2020 19:36:46 +0530 [thread overview]
Message-ID: <1594649209-29394-2-git-send-email-sumitg@nvidia.com> (raw)
In-Reply-To: <1594649209-29394-1-git-send-email-sumitg@nvidia.com>
To do frequency scaling on all CPUs within T194 CPU Complex, we need
to query BPMP for data on valid operating points. Document a compatible
string under 'cpus' node to represent the CPU Complex for binding drivers
like cpufreq which don't have their node or CPU Complex node to bind to.
Also, document a property to point to the BPMP device that can be queried
for all CPUs.
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
---
Documentation/devicetree/bindings/arm/cpus.yaml | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml
index a018147..9b328e3 100644
--- a/Documentation/devicetree/bindings/arm/cpus.yaml
+++ b/Documentation/devicetree/bindings/arm/cpus.yaml
@@ -162,6 +162,7 @@ properties:
- nvidia,tegra132-denver
- nvidia,tegra186-denver
- nvidia,tegra194-carmel
+ - nvidia,tegra194-ccplex
- qcom,krait
- qcom,kryo
- qcom,kryo260
@@ -255,6 +256,15 @@ properties:
where voltage is in V, frequency is in MHz.
+ nvidia,bpmp:
+ $ref: '/schemas/types.yaml#/definitions/phandle'
+ description: |
+ Specifies the bpmp node that needs to be queried to get
+ operating point data for all CPUs.
+
+ Optional for systems that have a "compatible"
+ property value of "nvidia,tegra194-ccplex".
+
power-domains:
$ref: '/schemas/types.yaml#/definitions/phandle-array'
description:
@@ -340,6 +350,7 @@ required:
dependencies:
rockchip,pmu: [enable-method]
+ nvidia,bpmp: [compatible]
examples:
- |
--
2.7.4
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next prev parent reply other threads:[~2020-07-13 14:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-13 14:06 [TEGRA194_CPUFREQ PATCH v5 0/4] Add cpufreq driver for Tegra194 Sumit Gupta
2020-07-13 14:06 ` Sumit Gupta [this message]
2020-07-13 16:42 ` [TEGRA194_CPUFREQ PATCH v5 1/4] dt-bindings: arm: Add t194 ccplex compatible and bpmp property Rob Herring
2020-07-14 11:43 ` Sumit Gupta
2020-07-14 13:46 ` Rob Herring
2020-07-14 16:07 ` [TEGRA194_CPUFREQ PATCH v6 1/4] dt-bindings: arm: Add NVIDIA Tegra194 CPU Complex binding Sumit Gupta
2020-07-14 20:47 ` Rob Herring
2020-07-15 10:22 ` Sumit Gupta
2020-07-14 16:14 ` [TEGRA194_CPUFREQ PATCH v5 1/4] dt-bindings: arm: Add t194 ccplex compatible and bpmp property Sumit Gupta
2020-07-13 14:06 ` [TEGRA194_CPUFREQ PATCH v5 2/4] arm64: tegra: " Sumit Gupta
2020-07-13 14:06 ` [TEGRA194_CPUFREQ PATCH v5 3/4] cpufreq: Add Tegra194 cpufreq driver Sumit Gupta
2020-07-15 11:16 ` Viresh Kumar
2020-07-15 12:31 ` Sumit Gupta
2020-07-13 14:06 ` [TEGRA194_CPUFREQ PATCH v5 4/4] soc/tegra: cpufreq: select cpufreq for Tegra194 Sumit Gupta
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