Hi Sasha,
Thanks for helping port this patch to stable.
May I know if I can submit other bug fixes which has been accepted by upstream to stable by myself?
If yes, where I can find related process for reference?
Thanks & Regards,
Ran
> -----Original Message-----
> From: Sasha Levin <sashal@xxxxxxxxxx>
> Sent: Wednesday, July 03, 2019 10:15
> To: linux-kernel@xxxxxxxxxxxxxxx; stable@xxxxxxxxxxxxxxx
> Cc: Ran Wang <ran.wang_1@xxxxxxx>; Shawn Guo <shawnguo@xxxxxxxxxx>;
> Sasha Levin <sashal@xxxxxxxxxx>; devicetree@xxxxxxxxxxxxxxx
> Subject: [PATCH AUTOSEL 5.1 08/39] arm64: dts: ls1028a: Fix CPU idle fail.
>
> From: Ran Wang <ran.wang_1@xxxxxxx>
>
> [ Upstream commit 53f2ac9d3aa881ed419054076042898b77c27ee4 ]
>
> 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.
>
> Fixes: 8897f3255c9c ("arm64: dts: Add support for NXP LS1028A SoC")
> Signed-off-by: Ran Wang <ran.wang_1@xxxxxxx>
> Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx>
> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
> ---
> arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 18 +++++++++---------
> 1 file 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 2896bbcfa3bb..228872549f01 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>;
> };
> };
>
> --
> 2.20.1
