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drm/amd/pm: apply SMU 13.0.10 workaround during MP1 unload

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On SMU v13.0.10, sending PrepareMp1ForUnload with the default
parameter may leave the device in an inaccessible state. This can
affect runtime power management and partial PnP flows.
e.g: kexec, driver unload, boco/d3cold.

Pass the required workaround parameter 0x55, when preparing MP1 for
unload on SMU v13.0.10, keep the existing behavior for other SMU
versions.

Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5133
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yang Wang 2026-05-21 22:36:37 +08:00 committed by Alex Deucher
parent 79a9f51ab9
commit 4e8ee1afee
1 changed files with 9 additions and 1 deletions
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10
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
View File

@ -2801,11 +2801,19 @@ static void smu_v13_0_0_i2c_control_fini(struct smu_context *smu)
static int smu_v13_0_0_set_mp1_state(struct smu_context *smu,
enum pp_mp1_state mp1_state)
{
uint32_t param;
int ret;
switch (mp1_state) {
case PP_MP1_STATE_UNLOAD:
ret = smu_cmn_set_mp1_state(smu, mp1_state);
/*
* NOTE: Param 0x55 comes from PMFW 80.31.0, ignored in older versions.
* No PMFW version check required.
*/
param = amdgpu_ip_version(smu->adev, MP1_HWIP, 0) == IP_VERSION(13, 0, 10) ?
0x55 : 0x00;
ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_PrepareMp1ForUnload,
param, NULL);
break;
default:
/* Ignore others */