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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-354b31c9d89sm5624821a91.6.2026.02.09.22.13.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Feb 2026 22:13:36 -0800 (PST) Message-ID: Date: Tue, 10 Feb 2026 14:13:31 +0800 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 1/3] phy: qcom: edp: Correct and clean up eDP/DP combo PHY configuration values To: Dmitry Baryshkov Cc: Konrad Dybcio , Vinod Koul , Neil Armstrong , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260205-edp_phy-v1-0-231882bbf3f1@oss.qualcomm.com> <20260205-edp_phy-v1-1-231882bbf3f1@oss.qualcomm.com> <1b78ea12-84ba-467e-b541-1ffd2348f38c@oss.qualcomm.com> <92556aa2-607f-4743-a480-19458836fffa@oss.qualcomm.com> <36ourp7swd36ptbal2gd7byrppownihbpkkxvocd44u7zddc4f@igo5h4yhbxs4> Content-Language: en-US From: Yongxing Mou In-Reply-To: <36ourp7swd36ptbal2gd7byrppownihbpkkxvocd44u7zddc4f@igo5h4yhbxs4> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=M8lA6iws c=1 sm=1 tr=0 ts=698acc92 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=pRcu1ZbixR8RBCY5_x8A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjEwMDA1MCBTYWx0ZWRfXzSUijvEzn66i WhALCSy8gQvuwjLvL6T1/6WK2GDCCoeVJfzlVZS30lHUJqiGa1Fwm5fxHrJBNMIZ7ZvB0gONixo FQkWTnJMfcytb26t8Mv4dFI/dLKNlrToJgIP9WcMTFkmoH9YtgfRgpSWC4yj+fui4cfG6xS6Yz/ 5alYeuvIyji7ejsfBYVDd8e6HPiPRFd366GKo9Azh1wGxbL3/C2J+1/L7B8JGmECyqR0kJsh/bm bWRiCUAJDE5+JBxaPSNPtK0aU4MdnkGeJurTkx2K/NFqF50owtl7anGVt5nRavyWxoj+ML1INlu 5bAWst4hxjqbz0/0IRejV/v55vFuLUe8Q7brT4CqFhM6ixNegDfOoW91sB+ly7+m+LJRH4c6kcM S7wvVij1EmnsCjlfA6hu8NDuxZwn44pzXf5Ot/egxQsNtqQJhWYsX750mzQBmjxZQLXP5B7m7c6 eLkSwItFKlM5dPKXwyQ== X-Proofpoint-GUID: 2vmTlGOo4h9XQdaFUCsnIkMFxe8YivaV X-Proofpoint-ORIG-GUID: 2vmTlGOo4h9XQdaFUCsnIkMFxe8YivaV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-09_01,2026-02-09_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 spamscore=0 bulkscore=0 adultscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602100050 On 2/9/2026 8:46 PM, Dmitry Baryshkov wrote: > On Mon, Feb 09, 2026 at 05:00:03PM +0800, Yongxing Mou wrote: >> >> >> On 2/6/2026 6:47 PM, Konrad Dybcio wrote: >>> On 2/5/26 10:20 AM, Yongxing Mou wrote: >>>> According to the current HPG settings, most eDP/DP combo PHYs can reuse the >>>> same configuration values. >>> >>> Even across the various process nodes? >>> >> Emm,Currently, I have only checked the five platforms that already have eDP >> PHY driver support enabled. The results are the same as stated in the commit >> message: in DP mode and in eDP low‑vdiff mode, there are four platforms that >> can reuse the same settings. The HPG I used was the one I found on IPCAT. >> Regarding HRG, please move to next comment. >>>> DP mode： >>>> -sa8775p/sc7280/sc8280xp/x1e80100 >>>> -glymur >>>> eDP mode(low vdiff): >>>> -glymur/sa8775p/sc8280xp/x1e80100 >>>> -sc7280 >>>> The current driver still keeps multiple versions of these tables and >>>> doesn't fully support every combo PHY mode. This patch removes the >>>> redundant configs and keeps only the sets we actually use, matching the >>>> platforms listed above. >>> >>> I see that e.g. eDP Low-Vdiff swing setting for RBR is: >>> >> Hi, do you mean emphasis settings, i don't see 0x11 0x12 in arr[0][1]. >>> hamoa kodiak >>> arr[0][1] 0x11 0x12 >>> >>> It may be that this changed later during tuning but it's not reflected >>> in the docs for kodiak >> Emm, if that, where can i get the correct value for tables.. In this patch, >> I’m indeed quite curious why the values before the modification differ from >> those in the HPG. I’m not sure about the reason. The HPG I used was taken >> directly from the current go/ipcat. Could you tell me where I can obtain the >> final table that should be used? > > Use the HPG which matches the chip generation / codename. > Yes, the current modifications are made according to the chip's HPG.