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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-acb6ec0b1d3sm785726966b.4.2025.04.23.04.23.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Apr 2025 04:23:49 -0700 (PDT) Message-ID: Date: Wed, 23 Apr 2025 13:23:47 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] arm64: dts: qcom: sa8775p: Set max link speed to Gen4 for PCIe EP To: Mrinmay Sarkar , Vinod Koul , Kishon Vijay Abraham I , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, krishna.chundru@oss.qualcomm.com, quic_vbadigan@quicinc.com, quic_nayiluri@quicinc.com, quic_ramkri@quicinc.com, quic_nitegupt@quicinc.com References: <20250423-update_phy-v1-0-30eb51703bb8@oss.qualcomm.com> <20250423-update_phy-v1-2-30eb51703bb8@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20250423-update_phy-v1-2-30eb51703bb8@oss.qualcomm.com> X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNDIzMDA3OCBTYWx0ZWRfXwGRpuUDkndzb Z+iTxS6z80Ffqmq2HVZ3xDQy8dxaKzCGWCTqG8JHMgptPALshW36S/z3mgCZ7Xy+GtLLLDhMbdY +HknPm5Tos/gEISkUuo0BX6KbnnFQhr+wIMMa+eoa6sD8YT03Jcv7G/JG+fDhbCJV7hC20tyoVr Q0PAqJXNB3kJpkuxJbzzkHJVds5rlawmQrF1+bEXqQu9qytX21JE5uVfaJSZgQ3fOOmyqUHcIY8 VjnUqxASUO0aGybNTjTIxB+TRKSp9r0GNycBG66KiNZUHEG4+ofx5SQt6UuOHEoxaJqCRL5Ag9e 3paM3Wa8eoDw6vzHrw7MCVCV+Heb3Tf4mnElTJV6B34aV3WCR/bw34c8uR032chjmKWz9PZsFPR xIRzkg8SLiwBj+LiyOyH0wCA1Qz93OuQ4/XKpQQOk9NzBQHC0sVIwc+xWVWjiucOUOZW5D4c X-Proofpoint-GUID: 9KF503YQEIpkJfcLrFVxBbAPQKvrBTGq X-Authority-Analysis: v=2.4 cv=B/S50PtM c=1 sm=1 tr=0 ts=6808cdc7 cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=XR8D0OoHHMoA:10 a=EUspDBNiAAAA:8 a=iRih2zsw3dMuVQupJ74A:9 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 X-Proofpoint-ORIG-GUID: 9KF503YQEIpkJfcLrFVxBbAPQKvrBTGq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.680,FMLib:17.12.80.40 definitions=2025-04-23_07,2025-04-22_01,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=999 lowpriorityscore=0 bulkscore=0 impostorscore=0 suspectscore=0 mlxscore=0 priorityscore=1501 phishscore=0 malwarescore=0 spamscore=0 clxscore=1015 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2504230078 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250423_042352_861145_77E3DEF4 X-CRM114-Status: GOOD ( 18.43 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 4/23/25 1:15 PM, Mrinmay Sarkar wrote: > The maximum link speed was previously restricted to Gen3 due to > the absence of Gen4 equalization support in the driver. > > Add this change to set the maximum link speed to Gen4, as Gen4 > equalization support has now been added into the driver. > > Signed-off-by: Mrinmay Sarkar > --- > arch/arm64/boot/dts/qcom/sa8775p.dtsi | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi > index 5bd0c03476b143444543c68cd1c1d475c3302555..65d9433a298f80eb782439120ad9c3c74025b441 100644 > --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi > +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi > @@ -6462,7 +6462,7 @@ pcie0_ep: pcie-ep@1c00000 { > power-domains = <&gcc PCIE_0_GDSC>; > phys = <&pcie0_phy>; > phy-names = "pciephy"; > - max-link-speed = <3>; /* FIXME: Limiting the Gen speed due to stability issues */ > + max-link-speed = <4>; The property may now be removed, as 4 is the value read out from the hardware Konrad -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy