linux-kernel - [PATCH v2] arm64: dts: zx: add zx296718's topcrm node

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Date:   Wed, 30 Nov 2016 17:50:18 +0800
From:   Baoyou Xie <baoyou.xie@...aro.org>
To:     robh+dt@...nel.org, mark.rutland@....com, catalin.marinas@....com,
        will.deacon@....com, shawnguo@...nel.org, jun.nie@...aro.org
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, baoyou.xie@...aro.org,
        xie.baoyou@....com.cn, chen.chaokai@....com.cn,
        wang.qiang01@....com.cn
Subject: [PATCH v2] arm64: dts: zx: add zx296718's topcrm node

Enable topcrm clock node for zx296718, which is used for
CPU's frequency change.

Furthermore, this patch adds the CPU clock phandle in CPU's node
and uses operating-points-v2 to register operating points.

So it can be used by cpufreq-dt driver.

Signed-off-by: Baoyou Xie <baoyou.xie@...aro.org>
---
 arch/arm64/boot/dts/zte/zx296718.dtsi | 43 +++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/arch/arm64/boot/dts/zte/zx296718.dtsi b/arch/arm64/boot/dts/zte/zx296718.dtsi
index 6b239a3..992158a 100644
--- a/arch/arm64/boot/dts/zte/zx296718.dtsi
+++ b/arch/arm64/boot/dts/zte/zx296718.dtsi
@@ -44,6 +44,7 @@
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/zx296718-clock.h>
 
 / {
 	compatible = "zte,zx296718";
@@ -81,6 +82,8 @@
 			compatible = "arm,cortex-a53","arm,armv8";
 			reg = <0x0 0x0>;
 			enable-method = "psci";
+			clocks = <&topcrm A53_GATE>;
+			operating-points-v2 = <&cluster0_opp>;
 		};
 
 		cpu1: cpu@1 {
@@ -88,6 +91,7 @@
 			compatible = "arm,cortex-a53","arm,armv8";
 			reg = <0x0 0x1>;
 			enable-method = "psci";
+			operating-points-v2 = <&cluster0_opp>;
 		};
 
 		cpu2: cpu@2 {
@@ -95,6 +99,7 @@
 			compatible = "arm,cortex-a53","arm,armv8";
 			reg = <0x0 0x2>;
 			enable-method = "psci";
+			operating-points-v2 = <&cluster0_opp>;
 		};
 
 		cpu3: cpu@3 {
@@ -102,6 +107,38 @@
 			compatible = "arm,cortex-a53","arm,armv8";
 			reg = <0x0 0x3>;
 			enable-method = "psci";
+			operating-points-v2 = <&cluster0_opp>;
+		};
+	};
+
+	cluster0_opp: opp_table0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp@...000000 {
+			opp-hz = /bits/ 64 <500000000>;
+			opp-microvolt = <857000>;
+			clock-latency-ns = <500000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <648000000>;
+			opp-microvolt = <857000>;
+			clock-latency-ns = <500000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <800000000>;
+			opp-microvolt = <882000>;
+			clock-latency-ns = <500000>;
+		};
+		opp@...0000000 {
+			opp-hz = /bits/ 64 <1000000000>;
+			opp-microvolt = <892000>;
+			clock-latency-ns = <500000>;
+		};
+		opp@...8000000 {
+			opp-hz = /bits/ 64 <1188000000>;
+			opp-microvolt = <1009000>;
+			clock-latency-ns = <500000>;
 		};
 	};
 
@@ -279,6 +316,12 @@
 			dma-requests = <32>;
 		};
 
+		topcrm: clock-controller@...1000 {
+			compatible = "zte,zx296718-topcrm";
+			reg = <0x01461000 0x1000>;
+			#clock-cells = <1>;
+		};
+
 		sysctrl: sysctrl@...3000 {
 			compatible = "zte,zx296718-sysctrl", "syscon";
 			reg = <0x1463000 0x1000>;
-- 
2.7.4