gistfile1.txt

static int generic_dsim_find_panel_or_bridge(struct samsung_dsim *dsi)
{
	struct device *dev = dsi->dev;
	struct drm_panel *panel;
	struct drm_bridge *bridge;
	int ret;

	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, &bridge);
	if (ret) {
		DRM_INFO("%s: ret = %d\n", __func__, ret);
		return ret;
	}

	if (panel)
		bridge = devm_drm_panel_bridge_add(dev, panel);

	if (IS_ERR(bridge)) {
		ret = PTR_ERR(bridge);
		DRM_DEV_ERROR(dev, "failed to find the bridge: %d\n", ret);
	}

	dsi->out_bridge = bridge;

	return 0;
}

static int generic_dsim_register_host(struct samsung_dsim *dsi)
{
#if 1
	int ret;

	ret = generic_dsim_find_panel_or_bridge(dsi);
	if (ret) {
		printk("%s: ret %d\n", __func__, ret);
		return ret;
	}
#endif
	return mipi_dsi_host_register(&dsi->dsi_host);
}

[    1.652021] of_drm_find_bridge: dev->of_node /soc@0/bus@30800000/i2c@30a50000/bridge@2c
[    1.660071] drm_of_find_panel_or_bridge: ret = -517
[    1.664963] [drm] generic_dsim_find_panel_or_bridge: ret = -517
[    1.670903] generic_dsim_register_host: ret -517
[    1.679136] of_drm_find_bridge: dev->of_node /soc@0/bus@32c00000/dsi@32e10000
[    1.686334] drm_of_find_panel_or_bridge: ret = -517
[    1.695011] pps pps0: new PPS source ptp0
[    1.722991] fec 30be0000.ethernet eth0: registered PHC device 0
[    1.733327] sdhci-esdhc-imx 30b40000.mmc: Got CD GPIO
[    1.742657] drm_bridge_add: done!
[    1.746029] sn65dsi83 3-002c: supply vcc not found, using dummy regulator
[    1.752978] drm_bridge_add: done!
[    1.756310] sn65dsi83_probe: drm_bridge_added
[    1.762966] samsung-dsim 32e10000.dsi: supply vddcore not found, using dummy regulator
[    1.771098] samsung-dsim 32e10000.dsi: supply vddio not found, using dummy regulator
[    1.773742] mmc0: SDHCI controller on 30b40000.mmc [30b40000.mmc] using ADMA
[    1.779402] of_drm_find_bridge: dev->of_node /soc@0/bus@30800000/i2c@30a50000/bridge@2c
[    1.793985] drm_of_find_panel_or_bridge: ret = -517
[    1.798877] [drm] generic_dsim_find_panel_or_bridge: ret = -517
[    1.804811] generic_dsim_register_host: ret -517
[    1.813378] of_drm_find_bridge: dev->of_node /soc@0/bus@32c00000/dsi@32e10000
[    1.820574] drm_of_find_panel_or_bridge: ret = -517
[    1.837486] drm_bridge_add: done!
[    1.838607] mmc0: host does not support reading read-only switch, assuming write-enable
[    1.840849] sn65dsi83 3-002c: supply vcc not found, using dummy regulator
[    1.853742] mmc0: new high speed SDHC card at address aaaa
[    1.855829] drm_bridge_add: done!
[    1.862242] mmcblk0: mmc0:aaaa SL32G 29.7 GiB 
[    1.864459] sn65dsi83_probe: drm_bridge_added
[    1.866717] samsung-dsim 32e10000.dsi: supply vddcore not found, using dummy regulator
[    1.871084]  mmcblk0: p1 p2 p3
[    1.873421] samsung-dsim 32e10000.dsi: supply vddio not found, using dummy regulator
[    1.893013] of_drm_find_bridge: dev->of_node /soc@0/bus@30800000/i2c@30a50000/bridge@2c
[    1.901066] drm_of_find_panel_or_bridge: ret = -517
[    1.905975] [drm] generic_dsim_find_panel_or_bridge: ret = -517
[    1.911912] generic_dsim_register_host: ret -517
[    1.920181] of_drm_find_bridge: dev->of_node /soc@0/bus@32c00000/dsi@32e10000
[    1.927374] drm_of_find_panel_or_bridge: ret = -517
[    1.943422] drm_bridge_add: done!
[    1.946778] sn65dsi83 3-002c: supply vcc not found, using dummy regulator
[    1.953754] drm_bridge_add: done!
[    1.957115] sn65dsi83_probe: drm_bridge_added
[    1.963737] samsung-dsim 32e10000.dsi: supply vddcore not found, using dummy regulator
[    1.971812] samsung-dsim 32e10000.dsi: supply vddio not found, using dummy regulator
[    1.980471] of_drm_find_bridge: dev->of_node /soc@0/bus@30800000/i2c@30a50000/bridge@2c
[    1.988513] drm_of_find_panel_or_bridge: ret = -517
[    1.993405] [drm] generic_dsim_find_panel_or_bridge: ret = -517
[    1.999341] generic_dsim_register_host: ret -517
[    2.007788] of_drm_find_bridge: dev->of_node /soc@0/bus@32c00000/dsi@32e10000
[    2.014993] drm_of_find_panel_or_bridge: ret = -517
[    2.031423] drm_bridge_add: done!
[    2.034781] sn65dsi83 3-002c: supply vcc not found, using dummy regulator
[    2.041755] drm_bridge_add: done!
[    2.045120] sn65dsi83_probe: drm_bridge_added
[    2.051739] samsung-dsim 32e10000.dsi: supply vddcore not found, using dummy regulator
[    2.059816] samsung-dsim 32e10000.dsi: supply vddio not found, using dummy regulator
[    2.068758] of_drm_find_bridge: dev->of_node /soc@0/bus@30800000/i2c@30a50000/bridge@2c
[    2.076800] drm_of_find_panel_or_bridge: ret = -517
[    2.081693] [drm] generic_dsim_find_panel_or_bridge: ret = -517
[    2.087628] generic_dsim_register_host: ret -517
[    2.097560] ALSA device list:
[    2.100566]   No soundcards found.
[    2.133636] EXT4-fs (mmcblk0p2): warning: mounting fs with errors, running e2fsck is recommended
[    2.148660] EXT4-fs (mmcblk0p2): mounted filesystem 8905f565-6210-4b9b-b222-7e68419da8c1 with ordered data mode. Quota mode: none.
[    2.160496] VFS: Mounted root (ext4 filesystem) on device 179:98.
[    2.169001] devtmpfs: mounted
[    2.174101] Freeing unused kernel memory: 7936K
[    2.178749] Run /sbin/init as init process
[    2.200875] process '/bin/busybox' started with executable stack
[    2.269938] EXT4-fs (mmcblk0p2): re-mounted 8905f565-6210-4b9b-b222-7e68419da8c1. Quota mode: none.
Starting syslogd: OK
Starting klogd: OK
Running sysctl: OK
Initializing random number generator: OK
Saving random seed: [    6.991723] random: crng init done
OK
Starting network: OK

Welcome to TINKER RK3288!
tinker-rk3288 login: r[   12.263501] of_drm_find_bridge: dev->of_node /soc@0/bus@32c00000/dsi@32e10000
[   12.270725] drm_of_find_panel_or_bridge: ret = -517
[   12.288115] drm_bridge_add: done!
[   12.291494] sn65dsi83 3-002c: supply vcc not found, using dummy regulator
[   12.298483] drm_bridge_add: done!
[   12.301818] sn65dsi83_probe: drm_bridge_added
[   12.308500] samsung-dsim 32e10000.dsi: supply vddcore not found, using dummy regulator
[   12.316585] samsung-dsim 32e10000.dsi: supply vddio not found, using dummy regulator
[   12.324915] of_drm_find_bridge: dev->of_node /soc@0/bus@30800000/i2c@30a50000/bridge@2c
[   12.332977] drm_of_find_panel_or_bridge: ret = -517
[   12.337874] [drm] generic_dsim_find_panel_or_bridge: ret = -517
[   12.343812] generic_dsim_register_host: ret -517
[   12.349875] platform 32e00000.lcdif: deferred probe pending
[   12.355492] i2c 3-002c: deferred probe pending
[   12.359957] platform 32e10000.dsi: deferred probe pending