From c48522ca132a0a45389deae63a3bae3147d75cd4 Mon Sep 17 00:00:00 2001
From: Lin Huang <hl@rock-chips.com>
Date: Mon, 6 May 2019 17:35:14 +0800
Subject: [PATCH] arm64: dts: rockchip: rk1808-compute: enable dmc

rk1808 compute stick is sensitive with power consumption, so
enable ddr dvfs, and set ddr frequency to 784MHz.

Change-Id: Ib08ec090af8fe7b276102ffb818aa9c4c0c8b82e
Signed-off-by: Lin Huang <hl@rock-chips.com>
---
 .../boot/dts/rockchip/rk1808-compute.dtsi     | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk1808-compute.dtsi b/arch/arm64/boot/dts/rockchip/rk1808-compute.dtsi
index 3796700a6800..26a041bf1eb4 100644
--- a/arch/arm64/boot/dts/rockchip/rk1808-compute.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk1808-compute.dtsi
@@ -114,6 +114,15 @@
 		regulator-min-microvolt = <1800000>;
 		regulator-max-microvolt = <1800000>;
 	};
+
+	vdd_log: vdd-cpu {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_log";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <800000>;
+		regulator-max-microvolt = <800000>;
+	};
 };
 
 &cpu0 {
@@ -128,6 +137,20 @@
 	status = "okay";
 };
 
+&dfi {
+	status = "okay";
+};
+
+&dmc {
+	center-supply = <&vdd_log>;
+	status = "okay";
+	system-status-freq = <
+		/*system status         freq(KHz)*/
+		SYS_STATUS_NORMAL       784000
+		SYS_STATUS_REBOOT       784000
+	>;
+};
+
 &emmc {
 	bus-width = <8>;
 	cap-mmc-highspeed;