linux-kernel - [Patch v2 3/4] arm64: tegra: add node for tegra234 cpufreq

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Date:   Wed, 30 Mar 2022 20:08:18 +0530
From:   Sumit Gupta <sumitg@...dia.com>
To:     <rafael@...nel.org>, <viresh.kumar@...aro.org>,
        <robh+dt@...nel.org>, <krzk+dt@...nel.org>, <treding@...dia.com>,
        <jonathanh@...dia.com>, <linux-pm@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <ksitaraman@...dia.com>, <sanjayc@...dia.com>, <bbasu@...dia.com>,
        <sumitg@...dia.com>
Subject: [Patch v2 3/4] arm64: tegra: add node for tegra234 cpufreq

Adding cclpex node to represent Tegra234 cpufreq.
Tegra234 uses some of the CRAB (Control Register Access Bus)
registers for cpu frequency requests. These registers are
memory mapped to CCPLEX_MMCRAB_ARM region. In this node, mapping
the range of MMCRAB registers required only for cpu frequency info.

Signed-off-by: Sumit Gupta <sumitg@...dia.com>
---
 arch/arm64/boot/dts/nvidia/tegra234.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
index aaace605bdaa..610207f3f967 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -1258,6 +1258,13 @@
 		};
 	};
 
+	ccplex@...0000 {
+		compatible = "nvidia,tegra234-ccplex-cluster";
+		reg = <0x0 0x0e000000 0x0 0x5ffff>;
+		nvidia,bpmp = <&bpmp>;
+		status = "okay";
+	};
+
 	sram@...00000 {
 		compatible = "nvidia,tegra234-sysram", "mmio-sram";
 		reg = <0x0 0x40000000 0x0 0x80000>;
-- 
2.17.1