From b989e1386385466761f703b8a91e00468bb5ca2a Mon Sep 17 00:00:00 2001 From: Benoit Cousson Date: Tue, 3 Jun 2014 21:02:24 +0900 Subject: ARM: shmobile: r8a7790/lager dts: Add DVFS parameters into cpu0 node for r8a7790 Add needed information inside CPU0 for the generic cpufreq-cpu0 driver. - voltage-tolerance = 1% It reflects the tolerance for the CPU voltage defined inside the OPP table. Due to the lack of proper OPP definition, use an arbitrary safe value. - clock-latency = 300 us Approximate worst-case latency to do a full DVFS transition for every OPPs. Due to the lack of HW information, use an arbitrary safe value. Note: The term transition-latency will be more accurate to define this value since the clock transition latency is not the only parameter that will define the overall DVFS transition. - operating-points = < kHz - uV > List of 6 operating points. All of them are using the same voltage since the valid Vmin voltage is not documented in the HW spec. - clocks phandle to the CPU clock source. This clock source is used for all the 4 CortexA15 located inside the same cluster. Signed-off-by: Benoit Cousson [gaku.inami.xw@bp.renesas.com: Change the setting of OPPs for ES2.0] Signed-off-by: Gaku Inami Acked-by: Magnus Damm Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7790-lager.dts | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/arm/boot/dts/r8a7790-lager.dts') diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts index 6472cf0914e2..cc65e3f96f08 100644 --- a/arch/arm/boot/dts/r8a7790-lager.dts +++ b/arch/arm/boot/dts/r8a7790-lager.dts @@ -338,3 +338,7 @@ regulator-always-on; }; }; + +&cpu0 { + cpu0-supply = <&vdd_dvfs>; +}; -- cgit v1.2.3