On Tue, May 07, 2019 at 07:43:37AM +0000, Ran Wang wrote:
> PSCI spec define 1st parameter's bit 16 of function CPU_SUSPEND to
> indicate CPU State Type: 0 for standby, 1 for power down. In this
> case, we want to select standby for CPU idle feature. But current
> setting wrongly select power down and cause CPU SUSPEND fail every
> time. Need this fix.
>
> Signed-off-by: Ran Wang <ran.wang_1@xxxxxxx>
Do we need a Fixes tag for this?
Shawn
> ---
> arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 18 +++++++++---------
> 1 files changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> index b045812..bf7f845 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> @@ -28,7 +28,7 @@
> enable-method = "psci";
> clocks = <&clockgen 1 0>;
> next-level-cache = <&l2>;
> - cpu-idle-states = <&CPU_PH20>;
> + cpu-idle-states = <&CPU_PW20>;
> };
>
> cpu1: cpu@1 {
> @@ -38,7 +38,7 @@
> enable-method = "psci";
> clocks = <&clockgen 1 0>;
> next-level-cache = <&l2>;
> - cpu-idle-states = <&CPU_PH20>;
> + cpu-idle-states = <&CPU_PW20>;
> };
>
> l2: l2-cache {
> @@ -53,13 +53,13 @@
> */
> entry-method = "arm,psci";
>
> - CPU_PH20: cpu-ph20 {
> - compatible = "arm,idle-state";
> - idle-state-name = "PH20";
> - arm,psci-suspend-param = <0x00010000>;
> - entry-latency-us = <1000>;
> - exit-latency-us = <1000>;
> - min-residency-us = <3000>;
> + CPU_PW20: cpu-pw20 {
> + compatible = "arm,idle-state";
> + idle-state-name = "PW20";
> + arm,psci-suspend-param = <0x0>;
> + entry-latency-us = <2000>;
> + exit-latency-us = <2000>;
> + min-residency-us = <6000>;
> };
> };
>
> --
> 1.7.1
>
