hai all..
I loaded the CC2520[IEEE802.15.4] radio driver by using overlay. It provides SPI
interface to communicate with the controller. I used SPI0 on BBB.
The Overlay is shown below:
nano BB-BONE-CC2520-00A0.dts
/dts-v1/;
/plugin/;
/ {
compatible = "ti,beaglebone", "ti,beaglebone-black";
/* Identification */
part-number = "BB-BONE-CC2520";
version = "00A0";
/* state the resources this cape uses */
exclusive-use =
/* the pin header uses(GPIO) */
"P9.12",
"P9.14",
"P9.16",
"P9.15",
"P8.11",
"P8.14",
"P9.13",
"P8.12",
"P9.17",
"P9.18",
"P9.21",
"P9.22",
/* the hardware IP uses */
"gpio1_28",
"gpio1_18",
"gpio1_19",
"gpio1_16",
"gpio1_13",
"gpio0_26",
"gpio0_31",
"gpio1_12",
"spi0";
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
cc2520_cape_pins: pinmux_cc2520_cape_pins {
pinctrl-single,pins = <
/* Pinmux comes from TRM section
9.3.1: CONTROL_MODULE Regusters. */
0x078 0x2f
0x048 0x2f
0x04c 0x2f
0x040 0x2f
0x034 0x2f
0x028 0x2f
0x074 0x2f
0x030 0x2f
>;
};
bone_cc2520_spi0_pins: pinmux_bone_cc2520_spi0_pins {
pinctrl-single,pins = <
0x150 0x10 /* spi0_sclk, OUTPUT_PULLUP | MODE0 */
0x154 0x30 /* spi0_d0, INPUT_PULLUP | MODE0 */
0x158 0x10 /* spi0_d1, OUTPUT_PULLUP | MODE0 */
0x15c 0x10 /* spi0_cs0, OUTPUT_PULLUP | MODE0 */
>;
};
};
};
fragment@1 {
target = <&spi0>;
__overlay__ {
/* needed to avoid DTC warnings */
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&bone_cc2520_spi0_pins>;
cc2520 {
compatible = "cc2520";
reg = <0>; /* CHIPSEL */
spi-max-frequency = <80000000>;
mode = <1>;
pinctrl-names = "default";
pinctrl-0 = <&cc2520_cape_pins>;
};
};
};
};
I am able to load the driver by using overlay.
But after "echo BB-BONE-CC2520 > /sys/devices/bone_capemgr.6/slots" the BBB
halts.
In dmesg it is showing as:
[ 67.398861] bone-capemgr bone_capemgr.6: part_number 'BB-BONE-CC2520',
version 'N/A'
[ 67.398944] bone-capemgr bone_capemgr.6: slot #7: generic override
[ 67.398973] bone-capemgr bone_capemgr.6: bone: Using override eeprom data at
slot 7
[ 67.399003] bone-capemgr bone_capemgr.6: slot #7: 'Override Board
Name,00A0,Override Manuf,BB-BONE-CC2520'
[ 67.399151] bone-capemgr bone_capemgr.6: slot #7: Requesting part
number/version based 'BB-BONE-CC2520-00A0.dtbo
[ 67.399179] bone-capemgr bone_capemgr.6: slot #7: Requesting firmware
'BB-BONE-CC2520-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 67.411234] bone-capemgr bone_capemgr.6: slot #7: dtbo
'BB-BONE-CC2520-00A0.dtbo' loaded; converting to live tree
[ 67.411595] bone-capemgr bone_capemgr.6: slot #7: #2 overlays
[ 67.456921] omap2_mcspi 48030000.spi: registered master spi1
[ 67.572272] edma-dma-engine edma-dma-engine.0: allocated channel for 0:17
[ 67.572327] edma-dma-engine edma-dma-engine.0: allocated channel for 0:16
[ 67.572360] spi spi1.0: setup: speed 48000000, sample leading edge, clk
normal
[ 67.572391] spi spi1.0: setup mode 0, 8 bits/w, 80000000 Hz max --> 0
[ 67.575781] Status value in get_status:0
[ 67.576031] omap2_mcspi 48030000.spi: transfer: 80000000 Hz, 1 txrx, 8 bpw
[ 67.576057] spi_master spi1: failed to transfer one message from queue
[ 72.257038] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data
may be corrupt. Please run fsck.
[ 600.208054] INFO: task sh:410 blocked for more than 300 seconds.
[ 600.214467] Not tainted 3.12.0-rc6-00364-g729a294-dirty #3
[ 600.220801] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 600.229042] sh D c0508dd4 0 410 312 0x00000004
[ 600.229132] [<c0508dd4>] (__schedule+0x5d0/0x694) from [<c05061b4>]
(schedule_timeout+0x1c/0x1c8)
[ 600.229164] [<c05061b4>] (schedule_timeout+0x1c/0x1c8) from [<c0509008>]
(wait_for_common+0xd4/0x168)
[ 600.229194] [<c0509008>] (wait_for_common+0xd4/0x168) from [<c033db2c>]
(__spi_sync+0x90/0xb0)
[ 600.229238] [<c033db2c>] (__spi_sync+0x90/0xb0) from [<bf22911c>]
(cc2520_get_status+0x88/0xb0 [cc2520])
[ 600.229295] [<bf22911c>] (cc2520_get_status+0x88/0xb0 [cc2520]) from
[<bf229ac0>] (cc2520_probe+0x2c0/0x700 [cc2520])
[ 600.229330] [<bf229ac0>] (cc2520_probe+0x2c0/0x700 [cc2520]) from
[<c033d584>] (spi_drv_probe+0x18/0x1c)
[ 600.229371] [<c033d584>] (spi_drv_probe+0x18/0x1c) from [<c02e5a84>]
(driver_probe_device+0xc8/0x1f8)
[ 600.229403] [<c02e5a84>] (driver_probe_device+0xc8/0x1f8) from [<c02e4304>]
(bus_for_each_drv+0x4c/0x84)
[ 600.229432] [<c02e4304>] (bus_for_each_drv+0x4c/0x84) from [<c02e5974>]
(device_attach+0x5c/0x88)
[ 600.229461] [<c02e5974>] (device_attach+0x5c/0x88) from [<c02e4fd4>]
(bus_probe_device+0x28/0x98)
[ 600.229490] [<c02e4fd4>] (bus_probe_device+0x28/0x98) from [<c02e3618>]
(device_add+0x43c/0x5d4)
[ 600.229518] [<c02e3618>] (device_add+0x43c/0x5d4) from [<c033e3f4>]
(spi_add_device+0xe0/0x154)
[ 600.229546] [<c033e3f4>] (spi_add_device+0xe0/0x154) from [<c033ecc4>]
(spi_register_master+0x5e8/0x6f0)
[ 600.229576] [<c033ecc4>] (spi_register_master+0x5e8/0x6f0) from [<c033ffcc>]
(omap2_mcspi_probe+0x310/0x3c0)
[ 600.229606] [<c033ffcc>] (omap2_mcspi_probe+0x310/0x3c0) from [<c02e68f4>]
(platform_drv_probe+0x14/0x18)
[ 600.229636] [<c02e68f4>] (platform_drv_probe+0x14/0x18) from [<c02e5a84>]
(driver_probe_device+0xc8/0x1f8)
[ 600.229666] [<c02e5a84>] (driver_probe_device+0xc8/0x1f8) from [<c02e4304>]
(bus_for_each_drv+0x4c/0x84)
[ 600.229695] [<c02e4304>] (bus_for_each_drv+0x4c/0x84) from [<c02e5974>]
(device_attach+0x5c/0x88)
[ 600.229724] [<c02e5974>] (device_attach+0x5c/0x88) from [<c02e4fd4>]
(bus_probe_device+0x28/0x98)
[ 600.229752] [<c02e4fd4>] (bus_probe_device+0x28/0x98) from [<c02e3618>]
(device_add+0x43c/0x5d4)
[ 600.229790] [<c02e3618>] (device_add+0x43c/0x5d4) from [<c040aa28>]
(of_platform_device_create_pdata+0x5c/0x7c)
[ 600.229828] [<c040aa28>] (of_platform_device_create_pdata+0x5c/0x7c) from
[<c040d7dc>] (of_overlay_device_entry_change.isra.4+0x88/0x158)
[ 600.229860] [<c040d7dc>] (of_overlay_device_entry_change.isra.4+0x88/0x158)
from [<c040dfc8>] (of_overlay+0xdc/0x190)
[ 600.229891] [<c040dfc8>] (of_overlay+0xdc/0x190) from [<c02f81e8>]
(bone_capemgr_load+0x48c/0x5d0)
[ 600.229919] [<c02f81e8>] (bone_capemgr_load+0x48c/0x5d0) from [<c02f9448>]
(slots_store+0x354/0x398)
[ 600.229947] [<c02f9448>] (slots_store+0x354/0x398) from [<c02e1e20>]
(dev_attr_store+0x18/0x24)
[ 600.229980] [<c02e1e20>] (dev_attr_store+0x18/0x24) from [<c013f258>]
(sysfs_write_file+0x108/0x13c)
[ 600.230020] [<c013f258>] (sysfs_write_file+0x108/0x13c) from [<c00e7e3c>]
(vfs_write+0xd4/0x1bc)
[ 600.230051] [<c00e7e3c>] (vfs_write+0xd4/0x1bc) from [<c00e826c>]
(SyS_write+0x3c/0x60)
[ 600.230087] [<c00e826c>] (SyS_write+0x3c/0x60) from [<c000db60>]
(ret_fast_syscall+0x0/0x30)
The error is from : http://lxr.free-electrons.com/source/drivers/spi/spi.c#L600
whether the problem related to the omap2_mcspi driver or with the device tree
overlay ?
I tried with SPI1[P9.28,29,30,31] also i am getting the same problem.
Thanks in advance.
Regards,
Bhadram
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