Thread (31 messages) 31 messages, 4 authors, 2026-03-19
STALE84d
Revisions (6)
  1. v1 [diff vs current]
  2. v2 [diff vs current]
  3. v3 current
  4. v4 [diff vs current]
  5. v5 [diff vs current]
  6. v8 [diff vs current]

[PATCH v3 phy-next 16/24] drm: bridge: cdns-mhdp8546: use consumer API for getting PHY bus width

From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: 2026-03-09 19:10:02
Also in: dri-devel, linux-arm-kernel, linux-arm-msm, linux-can, linux-gpio, linux-ide, linux-media, linux-pci, linux-phy, linux-renesas-soc, linux-riscv, linux-rockchip, linux-samsung-soc, linux-scsi, linux-sunxi, linux-tegra, linux-usb, lkml, spacemit
Subsystem: drm drivers, drm drivers and misc gpu patches, drm drivers for bridge chips, the rest · Maintainers: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Andrzej Hajda, Neil Armstrong, Robert Foss, Linus Torvalds

The Cadence MHDP8546 DP bridge driver gets the PHY bus_width attribute
(holding number of lanes) directly, but doing this will no longer be
possible after the definition of struct phy is hidden from consumers.

Use the phy_get_bus_width() API function designed specifically for
consumers.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Robert Foss <rfoss@kernel.org>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>

v1->v3: none
---
 drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index ed7ed82ddb64..e3f8a281f147 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -1304,7 +1304,7 @@ static void cdns_mhdp_fill_host_caps(struct cdns_mhdp_device *mhdp)
 
 	/* Get source capabilities based on PHY attributes */
 
-	mhdp->host.lanes_cnt = mhdp->phy->attrs.bus_width;
+	mhdp->host.lanes_cnt = phy_get_bus_width(mhdp->phy);
 	if (!mhdp->host.lanes_cnt)
 		mhdp->host.lanes_cnt = 4;
 
-- 
2.43.0
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