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Tue, 23 Jun 2026 04:37:00 -0700 (PDT) X-Received: by 2002:ac8:7d49:0:b0:517:5e32:f3ac with SMTP id d75a77b69052e-51a4f380d0dmr47486981cf.0.1782214620409; Tue, 23 Jun 2026 04:37:00 -0700 (PDT) Received: from [192.168.120.170] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6977be498e4sm4536670a12.20.2026.06.23.04.36.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 23 Jun 2026 04:36:58 -0700 (PDT) Message-ID: <4635a665-f605-4647-810d-c9d83a271a86@oss.qualcomm.com> Date: Tue, 23 Jun 2026 13:36:55 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 7/8] phy: qcom: qmp-combo: Correct pre-emphasis table for QMP v4 DP PHYs To: esteuwu@proton.me, Bjorn Andersson , Michael Turquette , Stephen Boyd , Brian Masney , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Rob Clark , Will Deacon , Robin Murphy , "Joerg Roedel (AMD)" , Vinod Koul , Neil Armstrong , Dmitry Baryshkov Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-phy@lists.infradead.org References: <20260622-sm8450-qol-v1-0-37e2ee8df9da@proton.me> <20260622-sm8450-qol-v1-7-37e2ee8df9da@proton.me> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260622-sm8450-qol-v1-7-37e2ee8df9da@proton.me> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=dOWWXuZb c=1 sm=1 tr=0 ts=6a3a6fdd cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=N-WSo6sfiX0bQk_JYPcA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjIzMDA5NCBTYWx0ZWRfX2Cvr9M2B66sH EJLllwOwZGjUdK3+0esnYb7+QHvr3pTLC00/IMwAV6RM8sjLxvOelAdCSuRDXZj8abtyoAFToNQ Q15YywDwWleC0LElH+M+1beorMmPMec= X-Proofpoint-ORIG-GUID: F8bGlopmeq4ycteCokPNfl9DB8VddrJ8 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjIzMDA5NCBTYWx0ZWRfX2+Mign8YQ0ft t2Pc1Z1q9KNI0zrjOWyM5eWP4LyOJLlpnUAut6ZjRkrtmLrU7AWX0G2jb/cpwLjJgR8XN/+yGw5 /vXjOZ++wMY8+ZLq613dqyVTeKnW0f03+I3xI5jvrUsXL2ao+Q9op+GNBPV6dWXM3vv7xyqeiDP X2R6uNwdYrPWAG6cR/SP0cKB+IfJ+a/bDKepYl/wtvZZgCv5ifiFTXvg7zk7/PjUkEtySupeKY2 35a1upNf8coyALeK3QqpI//I5POEidiMhwewSN+nDeJRgoIAtmS3D89vhXCCbgHhvKdCVwnR70Z wLYAWm7Z3MwqBH8RuU3v65ut9/pKsngIlkvf4EC5iYfEYWX87I5vq6viCQVzInyFqubQpX7ByOc k9wYsGzCJTKIob1wdOf/BqAwsCvN01visZ1P15srJALKeaZNs24QFbIxAmcm0uhTEio5GUT1+NP iAEQAIxtZ4YdETIRadQ== X-Proofpoint-GUID: F8bGlopmeq4ycteCokPNfl9DB8VddrJ8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-23_03,2026-06-23_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 adultscore=0 bulkscore=0 clxscore=1015 phishscore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606230094 On 6/23/26 2:54 AM, Esteban Urrutia via B4 Relay wrote: > From: Esteban Urrutia > > Comparing sm8350 and sm8450 tables, this seems to be typo. > > Signed-off-by: Esteban Urrutia > --- > drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c > index 9bd666ac2c49..5b278fd54a16 100644 > --- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c > +++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c > @@ -2108,7 +2108,7 @@ static const u8 qmp_dp_v4_pre_emphasis_hbr3_hbr2[4][4] = { > static const u8 qmp_dp_v4_pre_emphasis_hbr_rbr[4][4] = { > { 0x00, 0x0d, 0x14, 0x1a }, > { 0x00, 0x0e, 0x15, 0xff }, > - { 0x00, 0x0d, 0xff, 0xff }, > + { 0x00, 0x0e, 0xff, 0xff }, > { 0x03, 0xff, 0xff, 0xff } It seems like 8350/8450 should be using what this driver calls v5 tables, with this fixup: diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c index cdcfad2e86b1..63a4f2127e3c 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c @@ -2134,7 +2134,7 @@ static const u8 qmp_dp_v5_voltage_swing_hbr3_hbr2[4][4] = { }; static const u8 qmp_dp_v5_pre_emphasis_hbr_rbr[4][4] = { - { 0x20, 0x2d, 0x34, 0x3a }, + { 0x20, 0x2e, 0x35, 0x3b }, { 0x20, 0x2e, 0x35, 0xff }, { 0x20, 0x2e, 0xff, 0xff }, { 0x24, 0xff, 0xff, 0xff } +Dmitry please confirm Konrad