From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 93217] [tonga] [powerplay] Radon M395X isn't initialised with the powerplay branch Date: Mon, 22 Feb 2016 17:20:58 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0175521228==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id 831A16E288 for ; Mon, 22 Feb 2016 17:20:59 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0175521228== Content-Type: multipart/alternative; boundary="14561616590.5bf6.25269"; charset="UTF-8" --14561616590.5bf6.25269 Date: Mon, 22 Feb 2016 17:20:59 +0000 MIME-Version: 1.0 Content-Type: text/plain https://bugs.freedesktop.org/show_bug.cgi?id=93217 --- Comment #30 from Alex Deucher --- (In reply to Mike Lothian from comment #29) > Would you like me to try re-enabling pcie dpm and use the new kernel > parameters in drm-next-4.6-wip? Yes, can you see what combinations of pcie_gen_cap and pcie_lane_cap help? See amd_pcie.h. pcie_gen_cap: bits 31:16 define the gen speeds supported by the platform (e.g., the motherboard). Setting it to CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3 (0x00040000) would indicate that the motherboard only supports gen3 (not gen 2 or 1). bits 15:0 define the pcie speeds supported by the GPU itself. Setting this to CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3 (0x00000004) means the asic only supports gen 3. pcie_lane_cap: bits 31:16 define the link width supported by the platform. -- You are receiving this mail because: You are the assignee for the bug. --14561616590.5bf6.25269 Date: Mon, 22 Feb 2016 17:20:59 +0000 MIME-Version: 1.0 Content-Type: text/html

Comment # 30 on bug 93217 from 
(In reply to Mike Lothian from comment #29)
> Would you like me to try re-enabling pcie dpm and use the new kernel
> parameters in drm-next-4.6-wip?

Yes, can you see what combinations of pcie_gen_cap and pcie_lane_cap help?  See
amd_pcie.h.

pcie_gen_cap:
bits 31:16 define the gen speeds supported by the platform (e.g., the
motherboard).  Setting it to CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3 (0x00040000)
would indicate that the motherboard only supports gen3 (not gen 2 or 1).
bits 15:0 define the pcie speeds supported by the GPU itself.  Setting this to
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3 (0x00000004) means the asic only
supports gen 3.

pcie_lane_cap:
bits 31:16 define the link width supported by the platform.

You are receiving this mail because:
  • You are the assignee for the bug.
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