From: Gaku Inami <gaku.inami.xw@xxxxxxxxxxxxxx>
This patch supports GSX frequency scaling using devfreq.
Includes update of the OPP tables for GSX because the typical voltage of
VDD_DVFS (power optimized) was updated to 0.83V by R-Car Gen3 EC Rev0.54E
specification.
Signed-off-by: Gaku Inami <gaku.inami.xw@xxxxxxxxxxxxxx>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
Signed-off-by: Hien Dang <hien.dang.eb@xxxxxxxxxxx>
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@xxxxxxxxx>
---
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index d3264e7..fb30390 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -166,6 +166,27 @@
};
};
+ gsx_opp_table: gsx_opp_table {
+ compatible = "operating-points-v2";
+
+ opp@200000000 {
+ opp-hz = /bits/ 64 <200000000>;
+ opp-microvolt = <830000>;
+ };
+ opp@300000000 {
+ opp-hz = /bits/ 64 <300000000>;
+ opp-microvolt = <830000>;
+ };
+ opp@400000000 {
+ opp-hz = /bits/ 64 <400000000>;
+ opp-microvolt = <830000>;
+ };
+ opp@600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <830000>;
+ };
+ };
+
extal_clk: extal {
compatible = "fixed-clock";
#clock-cells = <0>;
@@ -2246,6 +2267,7 @@
reg = <0 0xfd000000 0 0x3ffff>;
interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 112>;
+ operating-points-v2 = <&gsx_opp_table>;
power-domains = <&sysc R8A7796_PD_3DG_B>;
};
--
2.7.4
