[PATCH] drm/amdgpu: Skip ASPM programming on aldebaran

[Zhang, Hawking]

[AMD Official Use Only]

Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: Lazar, Lijo <Lijo.Lazar at amd.com> 
Sent: Wednesday, November 24, 2021 19:35
To: amd-gfx at lists.freedesktop.org
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>; Pawar, Ashish <Ashish.Pawar at amd.com>; Deucher, Alexander <Alexander.Deucher at amd.com>
Subject: [PATCH] drm/amdgpu: Skip ASPM programming on aldebaran

There is no need for additional programming, keep the default settings.

Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index e96516d3fd45..dc5e93756fea 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -694,6 +694,9 @@ static void nbio_v7_4_program_aspm(struct amdgpu_device *adev)  {
 	uint32_t def, data;
 
+	if (adev->ip_versions[NBIO_HWIP][0] == IP_VERSION(7, 4, 4))
+		return;
+
 	def = data = RREG32_PCIE(smnPCIE_LC_CNTL);
 	data &= ~PCIE_LC_CNTL__LC_L1_INACTIVITY_MASK;
 	data &= ~PCIE_LC_CNTL__LC_L0S_INACTIVITY_MASK;
--
2.25.1