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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-4160d26d9absm18006952fac.16.2026.03.04.00.21.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2026 00:21:58 -0800 (PST) From: Qiang Yu Date: Wed, 04 Mar 2026 00:21:55 -0800 Subject: [PATCH 1/5] dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Add support for glymur Gen5 x8 bifurcation mode Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260304-glymur_gen5x8_phy-v1-1-849e9a72e125@oss.qualcomm.com> References: <20260304-glymur_gen5x8_phy-v1-0-849e9a72e125@oss.qualcomm.com> In-Reply-To: <20260304-glymur_gen5x8_phy-v1-0-849e9a72e125@oss.qualcomm.com> To: Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Qiang Yu X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1772612517; l=3719; i=qiang.yu@oss.qualcomm.com; s=20250513; h=from:subject:message-id; bh=0cxDH4J+ogpnd/2Sh8T/+lD9ulgjspAUfkAYG3Mt/CY=; b=u//xzciC0iOy71tQzdkre/5ZzPbinP8Hp0mSQdZG6U7/pN91pAkszc0NfvrWioUvLrrK2HRok 5wHzs+4x0vhCOT40wazLhj02LqmEoGsg7xZ3H+EjViGQw7WhGpd3YyD X-Developer-Key: i=qiang.yu@oss.qualcomm.com; a=ed25519; pk=Rr94t+fykoieF1ngg/bXxEfr5KoQxeXPtYxM8fBQTAI= X-Authority-Analysis: v=2.4 cv=AJS1/0o2 c=1 sm=1 tr=0 ts=69a7eba8 cx=c_pps a=OI0sxtj7PyCX9F1bxD/puw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=RFdnLZz7-LqoW1cxMWEA:9 a=QEXdDO2ut3YA:10 a=Z1Yy7GAxqfX1iEi80vsk:22 X-Proofpoint-ORIG-GUID: bbLMkHYT8yPWTW_FhcsMUcDeo31nEXc3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA0MDA2NCBTYWx0ZWRfXzzRqwqcCO9kG 6zrbONqPNuW1cchFUuSqgYWR1qWeKEHMxKPv7QunIrKDmVrcjdiDQQ8k5vMAlUVlRrzv+JdjPho Sxx0xpHl+yAUkvagauew5zxCoYFVhaRLEOrhcs60x02RzZOQ03kxR5dHdCXD4lvw31fQJ+6MeUx 7RTOWtBsGah0p+78yjEVBADIDE6PGqLlf6Cy9C4JLvEf/YmRpoQnyqq9ZOyUseFNTD9mFL5ZA7B MpgnpqChVWlErnKt3MqCn+WCJ0a5dWtt7CyIlnIBmG6amZxuuMAwwuDHYVidXg4vcUEE9x+yq5G QbY1SuaJ05riRbYHovYRWPacLeuwyLCrpkU3MFI2X5VIzG7Cc639Yvntfr9Sykn4UiSSMuNGe0M 7JzmQeu5RzcLy+tEUt76Ovyp9B5g0QA0FrdgppHRFLWOtlM1YJb9IRVMRpveLUwywSlyYEMG8Ds Hfj9/fmj/DyrSeIRwxQ== X-Proofpoint-GUID: bbLMkHYT8yPWTW_FhcsMUcDeo31nEXc3 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=2026-03-04_04,2026-03-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 spamscore=0 phishscore=0 adultscore=0 priorityscore=1501 clxscore=1015 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603040064 The Glymur SoC has pcie3a and pcie3b PHYs that can operate in two modes: 1. Independent 4-lane mode: Each PHY operates as a separate PCIe Gen5 4-lane interface, compatible with qcom,glymur-qmp-gen5x4-pcie-phy 2. Bifurcation mode (8-lane): pcie3a phy acts as leader and pcie3b phy as follower to form a single 8-lane PCIe Gen5 interface In bifurcation mode, the hardware design requires controlling additional resources beyond the standard pcie3a PHY configuration: - pcie3b's aux_clk (phy_b_aux) - pcie3b's phy_gdsc power domain - pcie3b's bcr/nocsr reset Add qcom,glymur-qmp-gen5x8-pcie-phy compatible string to document this 8-lane bifurcation configuration. The phy_b_aux clock is used as the 6th clock instead of pipediv2, requiring the clock-names enum to be extended to support both [phy_b_aux, pipediv2] options at index 5. This follows the existing pattern used for [rchng, refgen] clocks at index 3. Signed-off-by: Qiang Yu --- .../bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml | 45 ++++++++++++++++++= ---- 1 file changed, 37 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-p= hy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.= yaml index 3a35120a77ec0ceb814a1cdcacff32fef32b4f7b..25717bc9be98824e38f3c27c329= 9fbd1f2e7e299 100644 --- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml @@ -18,6 +18,7 @@ properties: enum: - qcom,glymur-qmp-gen4x2-pcie-phy - qcom,glymur-qmp-gen5x4-pcie-phy + - qcom,glymur-qmp-gen5x8-pcie-phy - qcom,kaanapali-qmp-gen3x2-pcie-phy - qcom,qcs615-qmp-gen3x1-pcie-phy - qcom,qcs8300-qmp-gen4x2-pcie-phy @@ -68,20 +69,23 @@ properties: - const: ref - enum: [rchng, refgen] - const: pipe - - const: pipediv2 + - enum: [phy_b_aux, pipediv2] =20 power-domains: - maxItems: 1 + minItems: 1 + maxItems: 2 =20 resets: minItems: 1 - maxItems: 2 + maxItems: 4 =20 reset-names: minItems: 1 items: - const: phy - const: phy_nocsr + - const: phy_b + - const: phy_b_nocsr =20 vdda-phy-supply: true =20 @@ -183,6 +187,7 @@ allOf: enum: - qcom,glymur-qmp-gen4x2-pcie-phy - qcom,glymur-qmp-gen5x4-pcie-phy + - qcom,glymur-qmp-gen5x8-pcie-phy - qcom,qcs8300-qmp-gen4x2-pcie-phy - qcom,sa8775p-qmp-gen4x2-pcie-phy - qcom,sa8775p-qmp-gen4x4-pcie-phy @@ -201,6 +206,17 @@ allOf: clock-names: minItems: 6 =20 + - if: + properties: + compatible: + contains: + enum: + - qcom,glymur-qmp-gen5x8-pcie-phy + then: + properties: + power-domains: + minItems: 2 + - if: properties: compatible: @@ -223,11 +239,24 @@ allOf: reset-names: minItems: 2 else: - properties: - resets: - maxItems: 1 - reset-names: - maxItems: 1 + if: + properties: + compatible: + contains: + enum: + - qcom,glymur-qmp-gen5x8-pcie-phy + then: + properties: + resets: + minItems: 4 + reset-names: + minItems: 4 + else: + properties: + resets: + maxItems: 1 + reset-names: + maxItems: 1 =20 - if: properties: --=20 2.34.1