linux-kernel - [PATCH v2 3/4] media: platform: ti: omap3isp: isp: read crc configuration from device tree for CCP2

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Message-ID: <8b91902b1aea867a67aa5679710812650fa2987a.1765782992.git.alex.t.tran@gmail.com>
Date: Sun, 14 Dec 2025 23:58:34 -0800
From: Alex Tran <alex.t.tran@...il.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Pavel Machek <pavel@...nel.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	linux-media@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Alex Tran <alex.t.tran@...il.com>
Subject: [PATCH v2 3/4] media: platform: ti: omap3isp: isp: read crc configuration from device tree for CCP2

Allow CCP2 receiver to read the crc configuration from the device tree.
Default value of 1 is used to maintain backward compatibility with
existing device trees that don't specify the crc property.

Signed-off-by: Alex Tran <alex.t.tran@...il.com>
---
 drivers/media/platform/ti/omap3isp/isp.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/ti/omap3isp/isp.c b/drivers/media/platform/ti/omap3isp/isp.c
index 8ac2bdcdf..cd10589ed 100644
--- a/drivers/media/platform/ti/omap3isp/isp.c
+++ b/drivers/media/platform/ti/omap3isp/isp.c
@@ -2102,7 +2102,10 @@ static void isp_parse_of_csi1_endpoint(struct device *dev,
 	buscfg->bus.ccp2.ccp2_mode = vep->bus_type == V4L2_MBUS_CCP2;
 	buscfg->bus.ccp2.vp_clk_pol = 1;
 
-	buscfg->bus.ccp2.crc = 1;
+	u32 use_crc = 1;
+
+	fwnode_property_read_u32(vep->base.local_fwnode, "crc", &use_crc);
+	buscfg->bus.ccp2.crc = use_crc;
 }
 
 static struct {
-- 
2.51.0