linux-kernel - [PATCH RFC 6/8] media: qcom: camss: csiphy-3ph: Use sdm845 C-PHY configuration sequence

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Message-Id: <20251109-qcom-cphy-v1-6-165f7e79b0e1@ixit.cz>
Date: Sun, 09 Nov 2025 10:39:49 +0100
From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@...nel.org>
To: Robert Foss <rfoss@...nel.org>, Todor Tomov <todor.too@...il.com>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Luca Weiss <luca.weiss@...rphone.com>, Petr Hodina <phodina@...tonmail.com>, 
 Casey Connolly <casey.connolly@...aro.org>, "Dr. Git" <drgitx@...il.com>
Cc: Joel Selvaraj <foss@...lselvaraj.com>, linux-media@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 phone-devel@...r.kernel.org, David Heidelberg <david@...t.cz>
Subject: [PATCH RFC 6/8] media: qcom: camss: csiphy-3ph: Use sdm845 C-PHY
 configuration sequence

From: David Heidelberg <david@...t.cz>

Enable the 3-phase (3PH) lane configuration introduced earlier when
C-PHY mode is requested on the SDM845 platform. This ensures the proper
initialization sequence is used for C-PHY operation.

Signed-off-by: David Heidelberg <david@...t.cz>
---
 drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
index c2adbde6b4e0d..03f5c4676e89a 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
@@ -1103,8 +1103,14 @@ static void csiphy_lanes_enable(struct csiphy_device *csiphy,

 	switch (csiphy->camss->res->version) {
 	case CAMSS_845:
-		regs->lane_regs = &lane_regs_sdm845[0];
-		regs->lane_array_size = ARRAY_SIZE(lane_regs_sdm845);
+		if (c->cphy) {
+			regs->lane_regs = &lane_regs_sdm845_3ph[0];
+			regs->lane_array_size = ARRAY_SIZE(lane_regs_sdm845_3ph);
+
+		} else {
+			regs->lane_regs = &lane_regs_sdm845[0];
+			regs->lane_array_size = ARRAY_SIZE(lane_regs_sdm845);
+		}
 		break;
 	case CAMSS_2290:
 		regs->lane_regs = &lane_regs_qcm2290[0];

-- 
2.51.0