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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1831b75ac0fsm9723006c88.15.2026.10.16.20.52.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Oct 2026 20:52:24 -0700 (PDT) From: Anusha Arun Nandi To: david@ixit.cz, andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, bod@kernel.org, vladimir.zapolskiy@linaro.org, loic.poulain@oss.qualcomm.com, mchehab@kernel.org Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, gjorgji.rosikopulos@oss.qualcomm.com, jigarkumar.zala@oss.qualcomm.com, hariram.purushothaman@oss.qualcomm.com, akapatra@quicinc.com, bryan.odonoghue@linaro.org, linux-media@vger.kernel.org, krzysztof.kozlowski@oss.qualcomm.com, daniel@quora.org, konrad.dybcio@oss.qualcomm.com, christopher.obbard@linaro.org, alex.vinarskis@gmail.com Subject: [PATCH 1/2] media: qcom: camss: csiphy: record PHY type from device-tree bus-type Date: Fri, 16 Oct 2026 20:52:20 -0700 Message-Id: <20261017035221.3816464-2-anusha.nandi@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261017035221.3816464-1-anusha.nandi@oss.qualcomm.com> References: <20261017035221.3816464-1-anusha.nandi@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: qqruSkl2SXLwPqQ2PZq1DIvyM2B8j5rV X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE3MDAxNSBTYWx0ZWRfX+Fu2zpODPbD3 W9E2pE18zM0VQwiGnIdQE85bRNgmjNP5lBhWtLhuBBdvS1ufjNvHvHC3r78tH2Fg7eb1KG6/3BB 8uVJSA9oFkKkiXCrXQSbY1K8Z2TRjPg= X-Authority-Analysis: v=2.4 cv=BZdNQbt2 c=1 sm=1 tr=0 ts=6ad2f0fa cx=c_pps a=wEP8DlPgTf/vqF+yE6f9lg==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=EUspDBNiAAAA:8 a=CkjXbxflZYdHZoY9ubYA:9 a=bBxd6f-gb0O0v-kibOvt:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE3MDAxNSBTYWx0ZWRfX1F+j3Fa1tpo1 urxH20Ch3xDr8AOqjZnPHaDkTfwI/Ueb8KU5kihNM5wWezF59eIH3CsDgZ3u17SFgxsUGAAk/mr hXB2/H7bZ8EluBrJc9BZ97H4eeLfXUmzk6oWJxdqZtVNXKRXQKgsipWh536ncjTSkRcUGyFQTza 5w2ADzZMP5qaZ8Leuek9NhGnNr8qN4uB10Hxf1Ru33OgZRD5iV0yWk6uhbnszDjg4URkAcm63ME SC3SqRXY+REk+WI/9Q9HnCzB/2xDsjoTaI9sIXgo+BTRhE/XuGqm6Rsb9/Mln22rbMTno9AcmHd BITXF5+4KCZHR0dpOH7BAIeIkIx+lWFfnsPdX0Rd2zXWcWFTlU/zhps56EXdQnrvF5BF/9I2ixY 1DBEnE5NNrSzCGTSLXQw1uVls610wFSszfbunZR5ZKBcAuFtMOdXXjE+IL04ihbPXlxukn4TF6E eU2CDd48/et6eAIwJqw== X-Proofpoint-ORIG-GUID: qqruSkl2SXLwPqQ2PZq1DIvyM2B8j5rV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-17_01,2026-10-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 phishscore=0 malwarescore=0 adultscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610170015 The CSIPHY lane configuration only tracked D-PHY, and camss_parse_endpoint_node() rejected any endpoint whose bus-type was not V4L2_MBUS_CSI2_DPHY. To support C-PHY sensors, record the PHY type (D-PHY or C-PHY) parsed from the device-tree endpoint bus-type into struct csiphy_lanes_cfg, and accept C-PHY endpoints. This is consumed by subsequent patches that adjust the link-frequency calculation and PHY configuration for C-PHY operation. No functional change for D-PHY: phy_cfg is set to V4L2_MBUS_CSI2_DPHY and existing behaviour is retained. Co-developed-by: David Heidelberg Signed-off-by: David Heidelberg Signed-off-by: Anusha Arun Nandi --- drivers/media/platform/qcom/camss/camss-csiphy.h | 2 ++ drivers/media/platform/qcom/camss/camss.c | 9 ++++++--- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.h b/drivers/media/platform/qcom/camss/camss-csiphy.h index 8c3319f2ca1c..fff504d2d489 100644 --- a/drivers/media/platform/qcom/camss/camss-csiphy.h +++ b/drivers/media/platform/qcom/camss/camss-csiphy.h @@ -35,11 +35,13 @@ struct csiphy_lane { * @num_data: number of data lanes * @data: data lanes configuration * @clk: clock lane configuration (only for D-PHY) + * @phy_cfg: PHY type in use (D-PHY or C-PHY) */ struct csiphy_lanes_cfg { int num_data; struct csiphy_lane *data; struct csiphy_lane clk; + enum v4l2_mbus_type phy_cfg; }; struct csiphy_csi2_cfg { diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index 07f7bed9591d..c888e78256b3 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -4756,10 +4756,12 @@ static int camss_parse_endpoint_node(struct device *dev, return ret; /* - * Most SoCs support both D-PHY and C-PHY standards, but currently only - * D-PHY is supported in the driver. + * Most SoCs support both D-PHY and C-PHY standards. Record the PHY type + * in use so that later stages (link-frequency calculation and PHY + * configuration) can account for the encoding differences between them. */ - if (vep.bus_type != V4L2_MBUS_CSI2_DPHY) { + if (vep.bus_type != V4L2_MBUS_CSI2_DPHY && + vep.bus_type != V4L2_MBUS_CSI2_CPHY) { dev_err(dev, "Unsupported bus type %d\n", vep.bus_type); return -EINVAL; } @@ -4767,6 +4769,7 @@ static int camss_parse_endpoint_node(struct device *dev, csd->interface.csiphy_id = vep.base.port; mipi_csi2 = &vep.bus.mipi_csi2; + lncfg->phy_cfg = vep.bus_type; lncfg->clk.pos = mipi_csi2->clock_lane; lncfg->clk.pol = mipi_csi2->lane_polarities[0]; lncfg->num_data = mipi_csi2->num_data_lanes; -- 2.34.1