Hi Tomi,
Thank you a lot for your assistance.
Here are my relevant DT nodes:
/ {
aliases {
display0 = &hdmi0;
};
hdmi0: connector@0 {
compatible = "hdmi-connector";
label = "hdmi";
type = "b";
hdmi_connector_in: endpoint {
remote-endpoint = <&hdmi_out>;
};
};
};
&dss {
status = "ok";
};
&hdmi {
status = "ok";
vdda-supply = <&ldo4_reg>;
pinctrl-names = "default";
pinctrl-0 = <&dss_hdmi_pins>;
hdmi_out: endpoint {
remote-endpoint = <&hdmi_connector_in>;
};
};
I have the following kernel crash (caused by missing .detect callback):
[ 10.885320] Unable to handle kernel NULL pointer dereference at
virtual address 00000000
[ 10.893825] pgd = ed787240
[ 10.896670] [00000000] *pgd=00000000
[ 10.900427] Internal error: Oops: 80000205 [#1] SMP ARM
[ 10.905883] Modules linked in: phy_omap_usb2 omapdrm(+)
drm_kms_helper connector_hdmi omap4_keypad matrix_keymap omapdss
fb_sys_fops omap_ocp2scp rtc_palmas spi_omap2_mcspi
[ 10.922032] CPU: 1 PID: 333 Comm: modprobe Tainted: G W
3.14.0-rc4-cm-t54-test-suit+ #111
[ 10.931486] task: ece1e040 ti: ecea2000 task.ti: ecea2000
[ 10.937122] PC is at 0x0
[ 10.939771] LR is at hdmic_detect+0x14/0x18 [connector_hdmi]
[ 10.945681] pc : [<00000000>] lr : [<bf1531c4>] psr: a0000013
[ 10.945681] sp : ecea3d50 ip : bf173158 fp : 00000000
[ 10.957664] r10: 00000800 r9 : 00000800 r8 : 00000004
[ 10.963118] r7 : bf17317c r6 : ecdf0400 r5 : ed6d4000 r4 : ed6d402c
[ 10.969932] r3 : 00000000 r2 : bf15c7cc r1 : bf0437d0 r0 : bf059470
[ 10.976754] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM
Segment user
[ 10.984207] Control: 30c5387d Table: ad787240 DAC: 55555555
[ 10.990209] Process modprobe (pid: 333, stack limit = 0xecea2248)
[ 10.996574] Stack: (0xecea3d50 to 0xecea4000)
[ 11.001123] 3d40: bf1531b0
bf16a134 bf16a118 bf158abc
[ 11.009664] 3d60: 00000004 c0b5ae60 00000000 00000001 ece4ae00
00000000 00000800 00000800
[ 11.018203] 3d80: bf17a000 00000020 00000000 bf15b7b8 00000020
ece4ae00 ece4ae00 ecdf0400
[ 11.026751] 3da0: ed69b940 bf175978 00000000 bf16bfa4 0000081f
ecdf0400 ed69b940 00000000
[ 11.035288] 3dc0: 00000000 bf167bbc 00000000 00000000 00000000
ecdf0400 00000000 00000000
[ 11.043828] 3de0: 00000000 c03afef8 c0a876a0 bf17586c ecdf0400
c03b179c c08dffd4 c01d641c
[ 11.052365] 3e00: c03b1818 c0978eac c0a876b0 bf175978 c0a876b0
c03cc6c4 c03cc6ac c0b5af2c
[ 11.060902] 3e20: bf175978 c03ca8cc c0a876b0 bf175978 c0a876e4
00000000 c0020f04 c03cab64
[ 11.069442] 3e40: 00000000 c0a876b0 bf175978 c03cac08 bf175978
00000000 c03cab7c c03c92dc
[ 11.077983] 3e60: edcd45dc eddcb234 bf175978 ece13480 c0ab8d48
c03ca1b8 bf1740d4 c0020f04
[ 11.086524] 3e80: bf175978 bf175978 00000000 ecea2000 00000000
c03cb264 c03cbd54 c0a7e510
[ 11.095067] 3ea0: ecea2000 c0008788 000000d0 f02aefff 00000000
c0158bc0 c0003020 f02af000
[ 11.103608] 3ec0: 00000000 bf175b24 c0a93b14 00000000 00000001
bf175b24 00000000 00000000
[ 11.112156] 3ee0: 00000001 c00dc9ec c00dcdbc fffffffb 00000000
c072932c c0a92348 00000000
[ 11.120702] 3f00: c0a92348 00000000 bf175b24 c0072830 00000000
bd94362e 00000000 bf175b24
[ 11.129244] 3f20: 00400100 ecea2000 00000080 c0020f04 ecea2000
00000000 00000000 c07137b4
[ 11.137785] 3f40: 0001dfea b6d5b000 b6fa7114 0001dfea b6d5b000
c00bad0c f0290000 0001dfea
[ 11.146323] 3f60: f02a29bc f02a2821 f02ab674 0000ecf0 00010510
00000000 00000000 00000000
[ 11.154860] 3f80: 00000027 00000028 0000001c 00000020 00000012
00000000 b87d23f8 00060000
[ 11.163409] 3fa0: b87d2280 c0020d80 b87d23f8 00060000 b6d5b000
0001dfea b6fa7114 b6d5b000
[ 11.171954] 3fc0: b87d23f8 00060000 b87d2280 00000080 b87d4c60
0001dfea b6fa7114 00000000
[ 11.180494] 3fe0: 00000000 bee169cc b6f9e190 b6f02e04 60000010
b6d5b000 00000000 00000000
[ 11.189071] [<bf1531c4>] (hdmic_detect [connector_hdmi]) from
[<bf16a134>] (omap_connector_detect+0x1c/0x58 [omapdrm])
[ 11.200274] [<bf16a134>] (omap_connector_detect [omapdrm]) from
[<bf158abc>] (drm_helper_probe_single_connector_modes+0x2b0/0x33c
[drm_kms_helper])
[ 11.214089] [<bf158abc>] (drm_helper_probe_single_connector_modes
[drm_kms_helper]) from [<bf15b7b8>]
(drm_fb_helper_initial_config+0x5c/0xac [drm_kms_helper])
[ 11.229011] [<bf15b7b8>] (drm_fb_helper_initial_config
[drm_kms_helper]) from [<bf16bfa4>] (omap_fbdev_init+0x90/0xc4 [omapdrm])
[ 11.241126] [<bf16bfa4>] (omap_fbdev_init [omapdrm]) from
[<bf167bbc>] (dev_load+0xcc/0x148 [omapdrm])
[ 11.250861] [<bf167bbc>] (dev_load [omapdrm]) from [<c03afef8>]
(drm_dev_register+0x78/0x138)
[ 11.259776] [<c03afef8>] (drm_dev_register) from [<c03b179c>]
(drm_get_platform_dev+0x50/0xa4)
[ 11.268785] [<c03b179c>] (drm_get_platform_dev) from [<c03cc6c4>]
(platform_drv_probe+0x18/0x48)
[ 11.277968] [<c03cc6c4>] (platform_drv_probe) from [<c03ca8cc>]
(really_probe+0x80/0x208)
[ 11.286516] [<c03ca8cc>] (really_probe) from [<c03cab64>]
(driver_probe_device+0x30/0x48)
[ 11.295071] [<c03cab64>] (driver_probe_device) from [<c03cac08>]
(__driver_attach+0x8c/0x90)
[ 11.303881] [<c03cac08>] (__driver_attach) from [<c03c92dc>]
(bus_for_each_dev+0x54/0x88)
[ 11.312422] [<c03c92dc>] (bus_for_each_dev) from [<c03ca1b8>]
(bus_add_driver+0xe4/0x1d8)
[ 11.320957] [<c03ca1b8>] (bus_add_driver) from [<c03cb264>]
(driver_register+0x78/0xf4)
[ 11.329323] [<c03cb264>] (driver_register) from [<c0008788>]
(do_one_initcall+0x44/0x174)
[ 11.337876] [<c0008788>] (do_one_initcall) from [<c07137b4>]
(do_init_module+0x48/0x17c)
[ 11.346331] [<c07137b4>] (do_init_module) from [<c00bad0c>]
(SyS_init_module+0x64/0x6c)
[ 11.354690] [<c00bad0c>] (SyS_init_module) from [<c0020d80>]
(ret_fast_syscall+0x0/0x30)
While using FBDEV I have the following issue:
root@cm-debian:~# modprobe omapfb
[ 27.524419] ------------[ cut here ]------------
[ 27.529256] WARNING: CPU: 1 PID: 2087 at
/home/lifshitz/workroot/OMAP5-eewiki/omap5-kernel/mm/page_alloc.c:2492
__alloc_pages_nodemask+0x268/0x83c()
[ 27.543164] Modules linked in: omapfb(+) cfbcopyarea cfbimgblt
cfbfillrect bnep rfcomm bluetooth 6lowpan_iphc phy_omap_usb2
connector_hdmi omapdss omap4_keypad matrix_keymap omap_ocp2scp
rtc_palmas spi_omap2_mcspi
[ 27.563113] CPU: 1 PID: 2087 Comm: modprobe Tainted: G W
3.14.0-rc4-cm-t54-test-suit+ #108
[ 27.572677] [<c00280ac>] (unwind_backtrace) from [<c0024eb0>]
(show_stack+0x10/0x14)
[ 27.580786] [<c0024eb0>] (show_stack) from [<c06fc434>]
(dump_stack+0x70/0x88)
[ 27.588341] [<c06fc434>] (dump_stack) from [<c004d8e8>]
(warn_slowpath_common+0x70/0x88)
[ 27.596815] [<c004d8e8>] (warn_slowpath_common) from [<c004d91c>]
(warn_slowpath_null+0x1c/0x24)
[ 27.606004] [<c004d91c>] (warn_slowpath_null) from [<c01135ec>]
(__alloc_pages_nodemask+0x268/0x83c)
[ 27.615562] [<c01135ec>] (__alloc_pages_nodemask) from [<c002cd78>]
(__dma_alloc_buffer.isra.16+0x2c/0xdc)
[ 27.625661] [<c002cd78>] (__dma_alloc_buffer.isra.16) from
[<c002ce40>] (__alloc_remap_buffer.isra.19+0x18/0xcc)
[ 27.636300] [<c002ce40>] (__alloc_remap_buffer.isra.19) from
[<c002d248>] (__dma_alloc+0x110/0x138)
[ 27.645757] [<c002d248>] (__dma_alloc) from [<c002d3fc>]
(arm_dma_alloc+0xb0/0xd8)
[ 27.653686] [<c002d3fc>] (arm_dma_alloc) from [<bf1b1f74>]
(omapfb_alloc_fbmem.isra.24+0xc8/0x158 [omapfb])
[ 27.663911] [<bf1b1f74>] (omapfb_alloc_fbmem.isra.24 [omapfb]) from
[<bf1b7078>] (omapfb_alloc_fbmem_display.isra.25+0xec/0xfc [omapfb])
[ 27.676759] [<bf1b7078>] (omapfb_alloc_fbmem_display.isra.25
[omapfb]) from [<bf1b21fc>] (omapfb_allocate_all_fbs+0xf4/0x174 [omapfb])
[ 27.689419] [<bf1b21fc>] (omapfb_allocate_all_fbs [omapfb]) from
[<bf1b30f8>] (omapfb_create_framebuffers+0x1fc/0x524 [omapfb])
[ 27.701432] [<bf1b30f8>] (omapfb_create_framebuffers [omapfb]) from
[<bf1b3fdc>] (omapfb_probe+0x28c/0x41c [omapfb])
[ 27.712446] [<bf1b3fdc>] (omapfb_probe [omapfb]) from [<c03ab844>]
(platform_drv_probe+0x18/0x48)
[ 27.721728] [<c03ab844>] (platform_drv_probe) from [<c03a9a4c>]
(really_probe+0x80/0x208)
[ 27.730284] [<c03a9a4c>] (really_probe) from [<c03a9ce4>]
(driver_probe_device+0x30/0x48)
[ 27.738834] [<c03a9ce4>] (driver_probe_device) from [<c03a9d88>]
(__driver_attach+0x8c/0x90)
[ 27.747661] [<c03a9d88>] (__driver_attach) from [<c03a845c>]
(bus_for_each_dev+0x54/0x88)
[ 27.756220] [<c03a845c>] (bus_for_each_dev) from [<c03a9338>]
(bus_add_driver+0xe4/0x1d8)
[ 27.764778] [<c03a9338>] (bus_add_driver) from [<c03aa3e4>]
(driver_register+0x78/0xf4)
[ 27.773148] [<c03aa3e4>] (driver_register) from [<c0008788>]
(do_one_initcall+0x44/0x174)
[ 27.781703] [<c0008788>] (do_one_initcall) from [<c06f2934>]
(do_init_module+0x48/0x17c)
[ 27.790172] [<c06f2934>] (do_init_module) from [<c00bad0c>]
(SyS_init_module+0x64/0x6c)
[ 27.798546] [<c00bad0c>] (SyS_init_module) from [<c0020d80>]
(ret_fast_syscall+0x0/0x30)
[ 27.807015] ---[ end trace 842d286115ab739d ]---
[ 27.811849] omapfb omapfb: failed to allocate framebuffer
[ 27.817490] omapfb omapfb: failed to allocate fbmem
[ 27.822746] omapfb omapfb: failed to setup omapfb
[ 27.827710] omapfb: probe of omapfb failed with error -12
Regards,
Dmitry
On 03/18/2014 07:29 AM, Tomi Valkeinen wrote:
On 17/03/14 16:22, Dmitry Lifshitz wrote:
Hi Tomi,
Unfortunately, I have a lack of experience with DT DSS stuff.
How should I define the endpoints and the connector in my case?
Please, could you provide some reference.
See Documentation/devicetree/bindings/media/video-interfaces.txt for a
description of the ports and endpoints.
If your board is similar to uevm except you don't have the tpd12s015,
then you just need to remove the tpd12s015 from the .dts file, and
connect the OMAP's HDMI output directly to the connector.
Regarding omapfb, is it sufficient to turn it on in the Kernel config?
Yes.
Tomi
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