tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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accel/ivpu: Add disable clock relinquish workaround for NVL-A0

Turn on disable clock relinquish workaround for Nova Lake A0.
Without this workaround NPU may not power off correctly after
inference, leading to unexpected system behavior.

Fixes: 550f4dd2cedd ("accel/ivpu: Add support for Nova Lake's NPU")
Cc: <stable@vger.kernel.org> # v6.19+

Reviewed-by: Lizhi.hou <lizhi.hou@amd.com>
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Link: https://patch.msgid.link/20260323095029.64613-1-karol.wachowski@linux.intel.com

Karol Wachowski e8ab57b5 fc3bbf34

+5 -2
+1
drivers/accel/ivpu/ivpu_drv.h
··· 35 35 #define IVPU_HW_IP_60XX 60 36 36 37 37 #define IVPU_HW_IP_REV_LNL_B0 4 38 + #define IVPU_HW_IP_REV_NVL_A0 0 38 39 39 40 #define IVPU_HW_BTRS_MTL 1 40 41 #define IVPU_HW_BTRS_LNL 2
+4 -2
drivers/accel/ivpu/ivpu_hw.c
··· 70 70 if (ivpu_hw_btrs_gen(vdev) == IVPU_HW_BTRS_MTL) 71 71 vdev->wa.interrupt_clear_with_0 = ivpu_hw_btrs_irqs_clear_with_0_mtl(vdev); 72 72 73 - if (ivpu_device_id(vdev) == PCI_DEVICE_ID_LNL && 74 - ivpu_revision(vdev) < IVPU_HW_IP_REV_LNL_B0) 73 + if ((ivpu_device_id(vdev) == PCI_DEVICE_ID_LNL && 74 + ivpu_revision(vdev) < IVPU_HW_IP_REV_LNL_B0) || 75 + (ivpu_device_id(vdev) == PCI_DEVICE_ID_NVL && 76 + ivpu_revision(vdev) == IVPU_HW_IP_REV_NVL_A0)) 75 77 vdev->wa.disable_clock_relinquish = true; 76 78 77 79 if (ivpu_test_mode & IVPU_TEST_MODE_CLK_RELINQ_ENABLE)