RE: [0001-increase-time-out-2s-send-msg-to-smu.patch] drm/amd/pm: increase time out value when sending msg to SMU

["Quan, Evan" <Evan.Quan@xxxxxxx>]

[AMD Public Use]

Reviewed-by: Evan Quan <evan.quan@xxxxxxx>

> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of
> charles sun
> Sent: Thursday, April 8, 2021 11:42 AM
> To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Su, Jinzhou (Joe)
> <Jinzhou.Su@xxxxxxx>; Liu, Zhan <Zhan.Liu@xxxxxxx>; Sun, Charles
> <Charles.Sun@xxxxxxx>
> Subject: [0001-increase-time-out-2s-send-msg-to-smu.patch] drm/amd/pm:
> increase time out value when sending msg to SMU
> 
> when do S3 stress, low rate that PowerUpVcn message will get response
> more than 1s, so here increase the timeout to 2s
> 
> Signed-off-by: Sun, Charles Charles.Sun@xxxxxxx
> Acked-by: Deucher, Alexander Alexander.Deucher@xxxxxxx
> ---
>  drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
> b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
> index b725f263092b..dc7d2e71aa6f 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
> @@ -79,7 +79,7 @@ static void smu_cmn_read_arg(struct smu_context
> *smu,  int smu_cmn_wait_for_response(struct smu_context *smu)  {
>  	struct amdgpu_device *adev = smu->adev;
> -	uint32_t cur_value, i, timeout = adev->usec_timeout * 10;
> +	uint32_t cur_value, i, timeout = adev->usec_timeout * 20;
> 
>  	for (i = 0; i < timeout; i++) {
>  		cur_value = RREG32_SOC15(MP1, 0,
> mmMP1_SMN_C2PMSG_90);
> --
> 2.25.1
> 
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