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video: tegra20: dc: convert to use of_graph

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Use OF graph as a main bridge/panel source, preserving
backwards compatibility with phandle implementation.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
This commit is contained in:
Svyatoslav Ryhel
2025-02-15 19:48:44 +02:00
parent 811a85af8e
commit 052c2630e5
1 changed files with 13 additions and 0 deletions
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13
drivers/video/tegra20/tegra-dc.c
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@@ -8,6 +8,7 @@
#include <cpu_func.h>
#include <clk.h>
#include <dm.h>
#include <dm/ofnode_graph.h>
#include <fdtdec.h>
#include <log.h>
#include <panel.h>
@@ -443,6 +444,18 @@ static int tegra_lcd_configure_rgb(struct udevice *dev, ofnode rgb)
ofnode remote;
int ret;
/* DC can have only 1 port */
remote = ofnode_graph_get_remote_node(rgb, -1, -1);
ret = uclass_get_device_by_ofnode(UCLASS_PANEL, remote, &priv->panel);
if (!ret)
return 0;
ret = uclass_get_device_by_ofnode(UCLASS_VIDEO_BRIDGE, remote, &priv->bridge);
if (!ret)
return 0;
/* Try legacy method if graph did not work */
remote = ofnode_parse_phandle(rgb, "nvidia,panel", 0);
if (!ofnode_valid(remote))
return -EINVAL;