Re: [PATCH] arm64: dts: mediatek: mt8195: Remove suspend-breaking reset from pcie0

["Macpaul Lin (林智斌)" <Macpaul.Lin@mediatek.com>]

On Mon, 2025-07-21 at 17:59 +0800, Guoqing Jiang wrote:
> 
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> 
> 
> When test suspend resume with 6.8 based kernel, system can't resume
> and I got below error which can be also reproduced with 6.16 rc6+
> kernel.
> 
> mtk-pcie-gen3 112f0000.pcie: PCIe link down, current LTSSM state:
> detect.quiet (0x0)
> mtk-pcie-gen3 112f0000.pcie: PM: dpm_run_callback():
> genpd_resume_noirq returns -110
> mtk-pcie-gen3 112f0000.pcie: PM: failed to resume noirq: error -110
> 
> After investigation, looks pcie0 has the same problem as pcie1 as
> decribed in commit 3d7fdd8e38aa ("arm64: dts: mediatek: mt8195:
> Remove suspend-breaking reset from pcie1").
> 
> Fixes: ecc0af6a3fe6 ("arm64: dts: mt8195: Add pcie and pcie phy
> nodes")
> Signed-off-by: Guoqing Jiang <guoqing.jiang@canonical.com>
> ---
>  arch/arm64/boot/dts/mediatek/mt8195.dtsi | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> index dd065b1bf94a..50cf01452208 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> @@ -1563,9 +1563,6 @@ pcie0: pcie@112f0000 {
> 
>                         power-domains = <&spm
> MT8195_POWER_DOMAIN_PCIE_MAC_P0>;
> 
> -                       resets = <&infracfg_ao
> MT8195_INFRA_RST2_PCIE_P0_SWRST>;
> -                       reset-names = "mac";
> -
>                         #interrupt-cells = <1>;
>                         interrupt-map-mask = <0 0 0 7>;
>                         interrupt-map = <0 0 0 1 &pcie_intc0 0>,
> --
> 2.34.1
> 

Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>

Please help to add Cc: stable@vger.kernel.org next time.
Thanks
Macpaul Lin