diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index b39ec5ed6242..fa97281f6c4c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1222,6 +1222,15 @@ static bool amdgpu_device_pcie_dynamic_switching_supported(struct amdgpu_device
 
 	if (c->x86_vendor == X86_VENDOR_INTEL)
 		return false;
+
+	/*
+	 * AMD Ryzen Pinnacle Ridge (Zen+, family 0x17 model 0x08) CPUs don't
+	 * support PCIe dynamic speed switching.
+	 * https://gitlab.freedesktop.org/drm/amd/-/work_items/5436
+	 */
+	if (c->x86_vendor == X86_VENDOR_AMD && c->x86 == 0x17 &&
+	    c->x86_model == 0x08)
+		return false;
 #endif
 	return true;
 }