Commit e18f601c5c7cce6f7365e467f9d1bbe3146f73dd
1 parent
d9b7281ddc
Exists in
smarc_8mq_lf_v2020.04
and in
4 other branches
MLK-16246 imx8mq_evk: Update DTB to disable DCSS and HDMI for mfgtool
When booting for mfgtool, we need to disable DCSS and HDMI since the HDMI firmware won't be loaded by mfgtool. Add the detect in u-boot and update the DTB. Signed-off-by: Ye Li <ye.li@nxp.com> Acked-by: Peng Fan <peng.fan@nxp.com> (cherry picked from commit 1d01cec0296d56ba8436941864d8da81013e0732) (cherry picked from commit 89512c1b28add9daf8001c51a44b9da826cbb9ad) (cherry picked from commit 61d9b430f9a21754441923d9aea350a931f7f7a5)
Showing 1 changed file with 34 additions and 0 deletions Side-by-side Diff
arch/arm/mach-imx/imx8m/soc.c
| ... | ... | @@ -350,6 +350,40 @@ |
| 350 | 350 | int rc; |
| 351 | 351 | int nodeoff; |
| 352 | 352 | |
| 353 | + if (get_boot_device() == USB_BOOT) { | |
| 354 | + static const char *nodes_path[] = { | |
| 355 | + "/dcss@32e00000", | |
| 356 | + "/hdmi@32c00000", | |
| 357 | + "/hdmi_cec@32c33800", | |
| 358 | + "/hdmi_drm@32c00000", | |
| 359 | + "/display-subsystem", | |
| 360 | + "/sound-hdmi" | |
| 361 | + }; | |
| 362 | + const char *status = "disabled"; | |
| 363 | + | |
| 364 | + for (i = 0; i < ARRAY_SIZE(nodes_path); i++) { | |
| 365 | + nodeoff = fdt_path_offset(blob, nodes_path[i]); | |
| 366 | + if (nodeoff < 0) | |
| 367 | + continue; /* Not found, skip it */ | |
| 368 | + | |
| 369 | + printf("Found %s node\n", nodes_path[i]); | |
| 370 | + | |
| 371 | +add_status: | |
| 372 | + rc = fdt_setprop(blob, nodeoff, "status", status, strlen(status) + 1); | |
| 373 | + if (rc) { | |
| 374 | + if (rc == -FDT_ERR_NOSPACE) { | |
| 375 | + rc = fdt_increase_size(blob, 512); | |
| 376 | + if (!rc) | |
| 377 | + goto add_status; | |
| 378 | + } | |
| 379 | + printf("Unable to update property %s:%s, err=%s\n", | |
| 380 | + nodes_path[i], "status", fdt_strerror(rc)); | |
| 381 | + } else { | |
| 382 | + printf("Modify %s:%s disabled\n", | |
| 383 | + nodes_path[i], "status"); | |
| 384 | + } | |
| 385 | + } | |
| 386 | + | |
| 353 | 387 | /* Disable the CPU idle for A0 chip since the HW does not support it */ |
| 354 | 388 | if (is_soc_rev(CHIP_REV_1_0)) { |
| 355 | 389 | static const char * const nodes_path[] = { |