Re: [PATCH V2] accel/amdxdna: Fix suspend failure after enabling turbo mode

["Falkowski, Maciej" <maciej.falkowski@linux.intel.com>]

Reviewed-by: Maciej Falkowski <maciej.falkowski@linux.intel.com>

On 2/11/2026 9:47 PM, Lizhi Hou wrote:
> Enabling turbo mode disables hardware clock gating. Suspend requires
> hardware clock gating to be re-enabled, otherwise suspend will fail.
> Fix this by calling aie2_runtime_cfg() from aie2_hw_stop() to
> re-enable clock gating during suspend. Also ensure that firmware is
> initialized in aie2_hw_start() before modifying clock-gating
> settings during resume.
>
> Fixes: f4d7b8a6bc8c ("accel/amdxdna: Enhance power management settings")
> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
> ---
>   drivers/accel/amdxdna/aie2_pci.c | 9 +++++----
>   1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/accel/amdxdna/aie2_pci.c b/drivers/accel/amdxdna/aie2_pci.c
> index 5b326e4610e6..0d41a6764892 100644
> --- a/drivers/accel/amdxdna/aie2_pci.c
> +++ b/drivers/accel/amdxdna/aie2_pci.c
> @@ -323,6 +323,7 @@ static void aie2_hw_stop(struct amdxdna_dev *xdna)
>   		return;
>   	}
>   
> +	aie2_runtime_cfg(ndev, AIE2_RT_CFG_CLK_GATING, NULL);
>   	aie2_mgmt_fw_fini(ndev);
>   	xdna_mailbox_stop_channel(ndev->mgmt_chann);
>   	xdna_mailbox_destroy_channel(ndev->mgmt_chann);
> @@ -406,15 +407,15 @@ static int aie2_hw_start(struct amdxdna_dev *xdna)
>   		goto stop_psp;
>   	}
>   
> -	ret = aie2_pm_init(ndev);
> +	ret = aie2_mgmt_fw_init(ndev);
>   	if (ret) {
> -		XDNA_ERR(xdna, "failed to init pm, ret %d", ret);
> +		XDNA_ERR(xdna, "initial mgmt firmware failed, ret %d", ret);
>   		goto destroy_mgmt_chann;
>   	}
>   
> -	ret = aie2_mgmt_fw_init(ndev);
> +	ret = aie2_pm_init(ndev);
>   	if (ret) {
> -		XDNA_ERR(xdna, "initial mgmt firmware failed, ret %d", ret);
> +		XDNA_ERR(xdna, "failed to init pm, ret %d", ret);
>   		goto destroy_mgmt_chann;
>   	}
>