On Mon, 2017-08-21 at 16:50 -0700, Rodrigo Vivi wrote:
> Coffe Lake CPU on Kaby Lake PCH is possible.
Typo ^
> It does exist, and it does work.
>
> The only missed case was this warning here noticed
> by Wendy who could get one system with this configuration
> and reported the issue for us:
>
> Hardware Configuration
> Board ID KBL S DDR4 UDIMM EV CRB
> Processor Intel® Processor code named Coffee Lake S, (6+2), 6 cores 12 threads, GT2, A0 (Internal) (QNJ4)
>
> [ 3.220585] WARNING: CPU: 10 PID: 206 at drivers/gpu/drm/i915/i915_drv.c:340 i915_driver_load+0x1210/0x1660 [i915]
> [ 3.221312] Modules linked in: hid_generic usbhid i915 i2c_algo_bit drm_kms_helper e1000e syscopyarea sysfillrect sysimgblt nvme fb_sys_fops ptp ahci i2c_hid drm pps_core nvme_core libahci wmi hid video
> [ 3.222050] CPU: 10 PID: 206 Comm: systemd-udevd Not tainted 4.13.0-rc5-intel-next+ #1
> [ 3.222706] Hardware name: Intel Corporation Kabylake Client platform/KBL S DDR4 UDIMM EV CRB, BIOS KBLSE2R1.R00.X089.P00.1705051000 05/05/2017
>
> Cc: Wendy Wang <wendy.wang@xxxxxxxxx>
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 43100229613c..f10a078e3a55 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -239,7 +239,8 @@ static void intel_detect_pch(struct drm_i915_private *dev_priv)
> dev_priv->pch_type = PCH_KBP;
> DRM_DEBUG_KMS("Found Kaby Lake PCH (KBP)\n");
> WARN_ON(!IS_SKYLAKE(dev_priv) &&
> - !IS_KABYLAKE(dev_priv));
> + !IS_KABYLAKE(dev_priv) &&
> + !IS_COFFEELAKE(dev_priv));
> } else if (id == INTEL_PCH_CNP_DEVICE_ID_TYPE) {
> dev_priv->pch_type = PCH_CNP;
> DRM_DEBUG_KMS("Found Cannon Lake PCH (CNP)\n");
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