[RFC 4/4] arm64: dts: rockchip: Set the display-subsystem devfreq

[Gaël PORTAY <gael.portay@xxxxxxxxxxxxx>]

Use the Dynamic Memory Controller as the display-subsystem's devfreq
device.

Signed-off-by: Gaël PORTAY <gael.portay@xxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi | 4 ++++
 arch/arm64/boot/dts/rockchip/rk3399.dtsi     | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
index 40e78186560b..a5cbbc08f7e1 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
@@ -375,6 +375,10 @@
 		<200000000>;
 };
 
+&display_subsystem {
+	devfreq = <&dmc>;
+};
+
 &emmc_phy {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 87ee084fac89..253b476163fd 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -155,7 +155,7 @@
 		};
 	};
 
-	display-subsystem {
+	display_subsystem: display-subsystem {
 		compatible = "rockchip,display-subsystem";
 		ports = <&vopl_out>, <&vopb_out>;
 	};
-- 
2.21.0