Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
accel/amdxdna: Fix suspend failure after enabling turbo mode
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")
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260211204716.722788-1-lizhi.hou@amd.com
+7
-6
+7
-6
drivers/accel/amdxdna/aie2_pci.c
+7
-6
drivers/accel/amdxdna/aie2_pci.c
···
323
323
return;
324
324
}
325
325
326
+
aie2_runtime_cfg(ndev, AIE2_RT_CFG_CLK_GATING, NULL);
326
327
aie2_mgmt_fw_fini(ndev);
327
328
xdna_mailbox_stop_channel(ndev->mgmt_chann);
328
329
xdna_mailbox_destroy_channel(ndev->mgmt_chann);
···
407
406
goto stop_psp;
408
407
}
409
408
410
-
ret = aie2_pm_init(ndev);
411
-
if (ret) {
412
-
XDNA_ERR(xdna, "failed to init pm, ret %d", ret);
413
-
goto destroy_mgmt_chann;
414
-
}
415
-
416
409
ret = aie2_mgmt_fw_init(ndev);
417
410
if (ret) {
418
411
XDNA_ERR(xdna, "initial mgmt firmware failed, ret %d", ret);
412
+
goto destroy_mgmt_chann;
413
+
}
414
+
415
+
ret = aie2_pm_init(ndev);
416
+
if (ret) {
417
+
XDNA_ERR(xdna, "failed to init pm, ret %d", ret);
419
418
goto destroy_mgmt_chann;
420
419
}
421
420