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ARM: dts: exynos: Add support of bus frequency using VDD_INT for exynos3250-rinato 

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@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
This commit is contained in:
Chanwoo Choi 2016-04-11 12:57:56 +09:00 committed by Krzysztof Kozlowski
parent 4a80467a7c
commit 691d010e5d
1 changed files with 41 additions and 0 deletions
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41
arch/arm/boot/dts/exynos3250-rinato.dts
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@ -154,6 +154,47 @@ &bus_dmc {
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>;
};