Hi,
On Wed, Mar 18, 2015 at 06:00:32AM +0000, Howard Chen wrote:
> add device tree for psci-0.2 on mt8173 platform
Are all the other mandatory PSCI 0.2 components implemented and working?
e.g. is MIGRATE_INFO_TYPE present, do SYSTEM_{OFF,RESET} work?
If they're not present and working, we can't describe this as having
PSCI 0.2.
Also, what FW does this require the system to have?
Mark.
> add device tree for cupidle-arm64 on mt8173 platform
>
> Signed-off-by: Howard Chen <howard.chen at linaro.org>
> ---
> arch/arm64/boot/dts/mediatek/mt8173.dtsi | 30 ++++++++++++++++++++++++++----
> 1 file changed, 26 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> index 8554ec3..96dff1e 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> @@ -48,6 +48,8 @@
> device_type = "cpu";
> compatible = "arm,cortex-a53";
> reg = <0x000>;
> + enable-method = "psci";
> + cpu-idle-states = <&CPU_SLEEP_0_0 &CLUSTER_SLEEP_0>;
> };
>
> cpu1: cpu at 1 {
> @@ -55,6 +57,7 @@
> compatible = "arm,cortex-a53";
> reg = <0x001>;
> enable-method = "psci";
> + cpu-idle-states = <&CPU_SLEEP_0_0 &CLUSTER_SLEEP_0>;
> };
>
> cpu2: cpu at 100 {
> @@ -62,6 +65,7 @@
> compatible = "arm,cortex-a57";
> reg = <0x100>;
> enable-method = "psci";
> + cpu-idle-states = <&CPU_SLEEP_0_0 &CLUSTER_SLEEP_0>;
> };
>
> cpu3: cpu at 101 {
> @@ -69,15 +73,33 @@
> compatible = "arm,cortex-a57";
> reg = <0x101>;
> enable-method = "psci";
> + cpu-idle-states = <&CPU_SLEEP_0_0 &CLUSTER_SLEEP_0>;
> };
> +
> + idle-states {
> + entry-method = "arm,psci-0.2";
> +
> + CPU_SLEEP_0_0: cpu-sleep-0-0 {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x0010000>;
> + entry-latency-us = <600>;
> + exit-latency-us = <600>;
> + min-residency-us = <1200>;
> + };
> +
> + CLUSTER_SLEEP_0: cluster-sleep-0 {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x1010000>;
> + entry-latency-us = <800>;
> + exit-latency-us = <1000>;
> + min-residency-us = <2000>;
> + wakeup-latency-us = <1000>;
> + };
> };
>
> psci {
> - compatible = "arm,psci";
> + compatible = "arm,psci-0.2";
> method = "smc";
> - cpu_suspend = <0x84000001>;
> - cpu_off = <0x84000002>;
> - cpu_on = <0x84000003>;
> };
>
> uart_clk: dummy26m {
> --
> 1.9.1
>
>