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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-66c5b0f5c6dsm514921a12.15.2026.03.31.08.23.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 31 Mar 2026 08:23:35 -0700 (PDT) Message-ID: <77ea76fe-7f8c-47d7-a697-3e2fcfd8a8e9@oss.qualcomm.com> Date: Tue, 31 Mar 2026 17:23:32 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC 0/2] arm64: dts: qcom: eliza: Add display To: Krzysztof Kozlowski , Krzysztof Kozlowski , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Abel Vesa References: <20260331-dts-qcom-eliza-display-v1-0-856f0b66b282@oss.qualcomm.com> <918785e7-ab35-4d54-a613-ca56de78cf86@kernel.org> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <918785e7-ab35-4d54-a613-ca56de78cf86@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzMxMDE0OCBTYWx0ZWRfX3Ou+diGPHhWR sUnoRPOL3sC1I6IrK5r0pxqyJu+qVVI1Ac0iYKbaKa6yq8Ft+zlOkDMNmozAVA5rafYaZVf12Go ERVBxE7L58RakRC9t6JQIHpeuBzEiyUH0sm5Gk1erUWZqSQcba1M5IBqvQPdPGPXnJdiE0G8Ak5 wgwwemfWWxXb2p8oVvQdMaN7nONw54qBMboeQ8FRaiJRb8aH5NsW+SDD35OrNU/egkq/V1/eY7P WnUp5ia46SrfzBylE5cFjl14YZdON8sVOnsT+Sdmi0wT/oJs69+CLkm859JM7gHRHaGgmr14c59 VveK3SuGbSzh525eQNkzEU6D8RgfDGP4gPXny77EgKnnRA4ME5S8y3gPqaz/E0+lg/uZIJUW8qM mK2do85tMM7E8s4e2Ygcmxy3byufYWGF6LTg6pYc+5HYP4Jb80JpeOLJaiRsJyOaHjTfTFlTC4s xOpS9VPPK4O8JlYeY9Q== X-Authority-Analysis: v=2.4 cv=G4ER0tk5 c=1 sm=1 tr=0 ts=69cbe6fa cx=c_pps a=N1BjEkVkxJi3uNfLdpvX3g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=fGO4tVQLAAAA:8 a=5yyciSfWpRQtyKLhTGUA:9 a=QEXdDO2ut3YA:10 a=crWF4MFLhNY0qMRaF8an:22 X-Proofpoint-GUID: MfMP4LPlCFyi0Z_3_6kkWiOlAVYrK4XI X-Proofpoint-ORIG-GUID: MfMP4LPlCFyi0Z_3_6kkWiOlAVYrK4XI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-31_03,2026-03-31_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 malwarescore=0 adultscore=0 impostorscore=0 spamscore=0 phishscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603310148 On 3/31/26 5:06 PM, Krzysztof Kozlowski wrote: > On 31/03/2026 17:03, Konrad Dybcio wrote: >> On 3/31/26 5:01 PM, Krzysztof Kozlowski wrote: >>> On 31/03/2026 16:49, Konrad Dybcio wrote: >>>> On 3/31/26 4:02 PM, Krzysztof Kozlowski wrote: >>>>> Dependency >>>>> ========== >>>>> Depends on USB patches, which are being reviewed, therefore marking it >>>>> as RFC as it cannot be applied. >>>>> https://lore.kernel.org/all/20260331-eliza-adsp-usb-v1-0-d8a251be20c3@oss.qualcomm.com/ >>>>> >>>>> Unmerged bindings used here >>>>> =========================== >>>>> dispcc: https://lore.kernel.org/all/20260319-clk-qcom-dispcc-eliza-v3-0-d1f2b19a6e6b@oss.qualcomm.com/ >>>>> (DRM MDSS bindings were applied) >>>>> >>>>> Description >>>>> =========== >>>>> I did not enable DisplayPort because it does not work on my board and I >>>>> don't know why. I double checked QMP combo phy and other bits, and >>>>> everything is looking fine, but still no USB display, so maybe I miss >>>>> some other dependencies as this is early upstream. >>>> >>>> What was the furthest that you got? We can certainly try to help.. >>>> >>>> Got USB Type-C mode mux events? >>>> PHY initialized and configured to 2/4-lane DP mode? >>>> Are the AUX transfers failling? >>> >>> [ 43.975329] msm_dpu ae01000.display-controller: [drm:drm_dp_dpcd_access] dpu_dp_aux: Too many retries, giving up. First error: -110 >>> [ 43.975410] msm_dpu ae01000.display-controller: [drm:drm_dp_dpcd_probe] dpu_dp_aux: 0x00102 AUX -> (ret=-110) >>> [ 45.780383] msm_dpu ae01000.display-controller: [drm:drm_dp_dpcd_access] dpu_dp_aux: Too many retries, giving up. First error: -110 >>> [ 45.780463] msm_dpu ae01000.display-controller: [drm:drm_dp_dpcd_probe] dpu_dp_aux: 0x00102 AUX -> (ret=-110) >>> [ 45.780521] msm_dpu ae01000.display-controller: [drm:msm_dp_pm_runtime_suspend] type=10 core_init=1 phy_init=1 >>> >>> pastebin: https://pastebin.com/BVXy3Qeq >>> >>> Abel pointed me to the phy problems, so I focused on that. >>> HSR says it is exactly same programming sequence as SM8650 >>> and such was used. >>> >>> Just note, that we have ADSP remoteproc up, but no audio including USB mux, >> >> Are you talking about wcd939x-mux? > > Yes > >> >> If so, you need that or the lanes won't be properly connected > > Ha! That would explain, although I had impression that with disabled > WCD939x mux the SM8750 DP still works. I don't know what's the power-on-reset setup, but there is a nonzero chance that if your recollections are correct, flipping the cable may make it work. But that'd be pure luck. > Well, I don't have that WCD939x and it is left for other team to finish > a bit later, so we can leave the USB DP for now. I will re-visit that > when audio progresses. But.. can't you just copy-paste the sm8750-mtp node and fix up the reset pin? Konrad