From: Stephan Gerhold <stephan@gerhold.net>
To: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Bhupesh Sharma <bhupesh.sharma@linaro.org>,
Marijn Suijten <marijn.suijten@somainline.org>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sm6115: Fix up cluster idle states
Date: Tue, 13 Jun 2023 21:31:29 +0200 [thread overview]
Message-ID: <ZIjEEarBM93g8beB@gerhold.net> (raw)
In-Reply-To: <20230613-topic-6115idlestates-v1-1-fa017052319d@linaro.org>
On Tue, Jun 13, 2023 at 09:13:47PM +0200, Konrad Dybcio wrote:
> The lowest nibble of the PSCI suspend param denotes the CPU state.
> It was mistakenly set to mimic the cluster state, resulting in poking
> PSCI with undocumented 0x2 and 0x4 states (both of which seem to be
> implemented and undocumented). Also, GDHS cluster param was wrong for C1.
>
> Fix that.
>
> Fixes: b5de1a9ff1f2 ("arm64: dts: qcom: sm6115: Add CPU idle-states")
> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> ---
> arch/arm64/boot/dts/qcom/sm6115.dtsi | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sm6115.dtsi b/arch/arm64/boot/dts/qcom/sm6115.dtsi
> index 55118577bf92..07d8b842d7be 100644
> --- a/arch/arm64/boot/dts/qcom/sm6115.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6115.dtsi
> @@ -225,7 +225,7 @@ domain-idle-states {
> CLUSTER_0_SLEEP_0: cluster-sleep-0-0 {
> /* GDHS */
> compatible = "domain-idle-state";
> - arm,psci-suspend-param = <0x40000022>;
> + arm,psci-suspend-param = <0x40000023>;
I think entering GDHS is also "Core is last in power level" "1=Cluster"
so (1 << 24) should be set here as well (i.e. 0x41...).
Otherwise the fixes look good, thanks for taking a look!
Thanks,
Stephan
prev parent reply other threads:[~2023-06-13 19:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-13 19:13 [PATCH] arm64: dts: qcom: sm6115: Fix up cluster idle states Konrad Dybcio
2023-06-13 19:14 ` Konrad Dybcio
2023-06-13 19:31 ` Stephan Gerhold [this message]
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