linux-kernel - [PATCH v12 05/35] dt-bindings: clock: tegra-car: Document new clock sub-nodes

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Date:   Mon, 20 Sep 2021 21:11:15 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Viresh Kumar <vireshk@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        Mikko Perttunen <mperttunen@...dia.com>,
        Peter Chen <peter.chen@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Nishanth Menon <nm@...com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>
Cc:     linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-staging@...ts.linux.dev, linux-pwm@...r.kernel.org,
        linux-mmc@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        Mark Brown <broonie@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Richard Weinberger <richard@....at>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Lucas Stach <dev@...xeye.de>, Stefan Agner <stefan@...er.ch>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        David Heidelberg <david@...t.cz>
Subject: [PATCH v12 05/35] dt-bindings: clock: tegra-car: Document new clock sub-nodes

Document sub-nodes which describe Tegra SoC clocks that require a higher
voltage of the core power domain in order to operate properly on a higher
clock rates.  Each node contains a phandle to OPP table and power domain.

The root PLLs and system clocks don't have any specific device dedicated
to them, clock controller is in charge of managing power for them.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 .../bindings/clock/nvidia,tegra20-car.yaml    | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml
index 459d2a525393..f832abb7f11a 100644
--- a/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml
+++ b/Documentation/devicetree/bindings/clock/nvidia,tegra20-car.yaml
@@ -42,6 +42,36 @@ properties:
   "#reset-cells":
     const: 1
 
+patternProperties:
+  "^(sclk)|(pll-[cem])$":
+    type: object
+    properties:
+      compatible:
+        enum:
+          - nvidia,tegra20-sclk
+          - nvidia,tegra30-sclk
+          - nvidia,tegra30-pllc
+          - nvidia,tegra30-plle
+          - nvidia,tegra30-pllm
+
+      operating-points-v2: true
+
+      clocks:
+        items:
+          - description: node's clock
+
+      power-domains:
+        maxItems: 1
+        description: phandle to the core SoC power domain
+
+    required:
+      - compatible
+      - operating-points-v2
+      - clocks
+      - power-domains
+
+    additionalProperties: false
+
 required:
   - compatible
   - reg
@@ -59,6 +89,13 @@ examples:
         reg = <0x60006000 0x1000>;
         #clock-cells = <1>;
         #reset-cells = <1>;
+
+        sclk {
+            compatible = "nvidia,tegra20-sclk";
+            operating-points-v2 = <&opp_table>;
+            clocks = <&tegra_car TEGRA20_CLK_SCLK>;
+            power-domains = <&domain>;
+        };
     };
 
     usb-controller@...04000 {
-- 
2.32.0