This patch adds the bus device-tree nodes of INT (internal) block
to enable the bus frequency scaling. The following sub-blocks share
the VDD_INT power source:
- LEFTBUS (parent device)
- RIGHTBUS
- PERIL
- LCD0
- FSYS
- MCUISP / ISP
- MFC
The LEFTBUS is parent device with devfreq ondemand governor
and the rest of devices depend on the LEFTBUS device.
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
---
arch/arm/boot/dts/exynos3250-rinato.dts | 41 +++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
index 9710e79e10a0..09444897b416 100644
--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -154,6 +154,47 @@
status = "okay";
};
+&bus_leftbus {
+ devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
+ vdd-supply = <&buck3_reg>;
+ status = "okay";
+};
+
+&bus_rightbus {
+ devfreq = <&bus_leftbus>;
+ status = "okay";
+};
+
+&bus_lcd0 {
+ devfreq = <&bus_leftbus>;
+ status = "okay";
+};
+
+&bus_fsys {
+ devfreq = <&bus_leftbus>;
+ status = "okay";
+};
+
+&bus_mcuisp {
+ devfreq = <&bus_leftbus>;
+ status = "okay";
+};
+
+&bus_isp {
+ devfreq = <&bus_leftbus>;
+ status = "okay";
+};
+
+&bus_peril {
+ devfreq = <&bus_leftbus>;
+ status = "okay";
+};
+
+&bus_mfc {
+ devfreq = <&bus_leftbus>;
+ status = "okay";
+};
+
&cpu0 {
cpu0-supply = <&buck2_reg>;
};
--
1.9.1
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