From 4f279f9fbca54464173240f7e73b145a136dfa1e Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Sun, 29 Dec 2019 20:16:17 +0000 Subject: arm64: dts: rockchip: Add RK3328 idle state Downstream RK3328 DTBs describe a CPU idle state matching that present on other SoCs like RK3399. This works with upstream Trusted Firmware-A too, so let's add it here. Signed-off-by: Robin Murphy Link: https://lore.kernel.org/r/a8c83e705d387446ea8121516d410e38b2d9c57b.1577640736.git.robin.murphy@arm.com Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3328.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) --- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi @@ -41,6 +41,7 @@ reg = <0x0 0x0>; clocks = <&cru ARMCLK>; #cooling-cells = <2>; + cpu-idle-states = <&CPU_SLEEP>; dynamic-power-coefficient = <120>; enable-method = "psci"; next-level-cache = <&l2>; @@ -53,6 +54,7 @@ reg = <0x0 0x1>; clocks = <&cru ARMCLK>; #cooling-cells = <2>; + cpu-idle-states = <&CPU_SLEEP>; dynamic-power-coefficient = <120>; enable-method = "psci"; next-level-cache = <&l2>; @@ -65,6 +67,7 @@ reg = <0x0 0x2>; clocks = <&cru ARMCLK>; #cooling-cells = <2>; + cpu-idle-states = <&CPU_SLEEP>; dynamic-power-coefficient = <120>; enable-method = "psci"; next-level-cache = <&l2>; @@ -77,12 +80,26 @@ reg = <0x0 0x3>; clocks = <&cru ARMCLK>; #cooling-cells = <2>; + cpu-idle-states = <&CPU_SLEEP>; dynamic-power-coefficient = <120>; enable-method = "psci"; next-level-cache = <&l2>; operating-points-v2 = <&cpu0_opp_table>; }; + idle-states { + entry-method = "psci"; + + CPU_SLEEP: cpu-sleep { + compatible = "arm,idle-state"; + local-timer-stop; + arm,psci-suspend-param = <0x0010000>; + entry-latency-us = <120>; + exit-latency-us = <250>; + min-residency-us = <900>; + }; + }; + l2: l2-cache0 { compatible = "cache"; };