[PATCH AUTOSEL 6.2 30/30] drm/amd: Fix initialization mistake for NBIO 7.3.0

[Sasha Levin]

From: Mario Limonciello <mario.limonciello@xxxxxxx>

[ Upstream commit 1717cc5f2962a4652c76ed3858b499ccae6c277c ]

The same strapping initialization issue that happened on NBIO 7.5.1
appears to be happening on NBIO 7.3.0.
Apply the same fix to 7.3.0 as well.

Note: This workaround relies upon the integrated GPU being enabled
in BIOS. If the integrated GPU is disabled in BIOS a different
workaround will be required.

Reported-by: Thomas Glanzmann <thomas@xxxxxxxxxxxx>
Cc: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx>
Link: https://lore.kernel.org/linux-usb/Y%2Fz9GdHjPyF2rNG3@xxxxxxxxxxxx/T/#u
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
index 4b0d563c6522c..4ef1fa4603c8e 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c
@@ -382,11 +382,6 @@ static void nbio_v7_2_init_registers(struct amdgpu_device *adev)
 		if (def != data)
 			WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regBIF1_PCIE_MST_CTRL_3), data);
 		break;
-	case IP_VERSION(7, 5, 1):
-		data = RREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2);
-		data &= ~RCC_DEV2_EPF0_STRAP2__STRAP_NO_SOFT_RESET_DEV2_F0_MASK;
-		WREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2, data);
-		fallthrough;
 	default:
 		def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CONFIG_CNTL));
 		data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL,
@@ -399,6 +394,15 @@ static void nbio_v7_2_init_registers(struct amdgpu_device *adev)
 		break;
 	}
 
+	switch (adev->ip_versions[NBIO_HWIP][0]) {
+	case IP_VERSION(7, 3, 0):
+	case IP_VERSION(7, 5, 1):
+		data = RREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2);
+		data &= ~RCC_DEV2_EPF0_STRAP2__STRAP_NO_SOFT_RESET_DEV2_F0_MASK;
+		WREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2, data);
+		break;
+	}
+
 	if (amdgpu_sriov_vf(adev))
 		adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
 			regBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
-- 
2.39.2