linux-kernel - [PATCH v1 1/2] ARM: dts: imx7s: Define operating points table for cpufreq

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Date:   Fri, 14 Jan 2022 16:18:46 +0100
From:   Francesco Dolcini <francesco.dolcini@...adex.com>
To:     Rob Herring <robh+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     Denys Drozdov <denys.drozdov@...adex.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Francesco Dolcini <francesco.dolcini@...adex.com>
Subject: [PATCH v1 1/2] ARM: dts: imx7s: Define operating points table for cpufreq

From: Denys Drozdov <denys.drozdov@...adex.com>

Processor operating points for imx7s.dtsi should be properly defined to
perform correct imx-cpufreq-dt probe and registration and provide an
access to the temperature sensors using the i.MX thermal driver.

Signed-off-by: Denys Drozdov <denys.drozdov@...adex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>
---
 arch/arm/boot/dts/imx7s.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 52a9aeecdbb2..5af6d58666f4 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -76,6 +76,22 @@ cpu0: cpu@0 {
 			clock-latency = <61036>; /* two CLK32 periods */
 			clocks = <&clks IMX7D_CLK_ARM>;
 			cpu-idle-states = <&cpu_sleep_wait>;
+			operating-points-v2 = <&cpu0_opp_table>;
+			#cooling-cells = <2>;
+			nvmem-cells = <&fuse_grade>;
+			nvmem-cell-names = "speed_grade";
+		};
+	};
+
+	cpu0_opp_table: opp-table {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-792000000 {
+			opp-hz = /bits/ 64 <792000000>;
+			opp-microvolt = <1000000>;
+			clock-latency-ns = <150000>;
+			opp-supported-hw = <0xf>, <0xf>;
 		};
 	};
 
-- 
2.25.1