树莓派模块加载顺序问题。

kkliucongbo · 2015-09-18 01:53:35

Jan 01 00:00:09 alarmpi kernel: fbtft: module is from the staging directory, the quality is unknown, you have been warned.
Jan 01 00:00:09 alarmpi kernel: fbtft_device: module is from the staging directory, the quality is unknown, you have been warned.
Jan 01 00:00:09 alarmpi kernel: fbtft_device: SPI devices registered:
Jan 01 00:00:09 alarmpi kernel: fbtft_device: 'fb' Platform devices registered:
Jan 01 00:00:09 alarmpi kernel: fbtft_device: soc:fb id=-1 pdata? no
Jan 01 00:00:09 alarmpi kernel: fbtft_device: spi_busnum_to_master(0) returned NULL
Jan 01 00:00:09 alarmpi kernel: fbtft_device: failed to register SPI device
Jan 01 00:00:09 alarmpi kernel: random: nonblocking pool is initialized
Jan 01 00:00:09 alarmpi systemd[1]: systemd-modules-load.service: Main process exited, code=exited, status=1/FAILURE
Jan 01 00:00:09 alarmpi systemd[1]: Failed to start Load Kernel Modules.
Jan 01 00:00:09 alarmpi systemd[1]: systemd-modules-load.service: Unit entered failed state.
Jan 01 00:00:09 alarmpi systemd[1]: systemd-modules-load.service: Failed with result 'exit-code'.
Jan 01 00:00:09 alarmpi systemd[1]: Mounting Configuration File System...
Jan 01 00:00:09 alarmpi systemd[1]: Starting Apply Kernel Variables...
Jan 01 00:00:09 alarmpi systemd[1]: Mounted Configuration File System.
Jan 01 00:00:09 alarmpi systemd[1]: Started Apply Kernel Variables.
Jan 01 00:00:09 alarmpi systemd[1]: Started udev Kernel Device Manager.
Jan 01 00:00:09 alarmpi systemd[1]: Reached target Sound Card.
Jan 01 00:00:09 alarmpi kernel: gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
Jan 01 00:00:09 alarmpi systemd[1]: Found device /dev/ttyAMA0.
Jan 01 00:00:09 alarmpi kernel: bcm2708_i2c 3f205000.i2c: BSC0 Controller at 0x3f205000 (irq 79) (baudrate 100000)
Jan 01 00:00:09 alarmpi systemd-journal[143]: Journal started
Jan 01 00:00:07 alarmpi systemd-modules-load[135]: Inserted module 'bcm2708_rng'
Jan 01 00:00:08 alarmpi systemd-modules-load[135]: Inserted module 'snd_bcm2835'
Jan 01 00:00:08 alarmpi systemd-modules-load[135]: Failed to insert 'fbtft_device': Invalid argument
Jan 01 00:00:09 alarmpi systemd[1]: Started Journal Service.
Jan 01 00:00:09 alarmpi systemd[1]: Starting Flush Journal to Persistent Storage...
Jan 01 00:00:09 alarmpi kernel: spi spi0.0: setting up native-CS0 as GPIO 8
Jan 01 00:00:09 alarmpi kernel: spi spi0.1: setting up native-CS1 as GPIO 7

给树莓派配了一块小的液晶屏幕，驱动什么的都装好了。就是在开机点亮上出了点问题，爬了wiki也没有找到，怎么在modules-load.d的conf文件里指定模块加载顺序。

正确的应该是加载完'snd_bcm2835'这个模块，初始化完GPIO接口之后再加载 fbtft-device模块的。但是现在从日志来看每次加载液晶设备的时候GPIO都没有初始化

求问：
如何指定模块加载顺序？

先谢诸君

PS：
进入系统之后用 modprobe fbtft-device能正常初始化屏幕

最近编辑记录 kkliucongbo (2015-09-18 01:56:36)

依云 · 2015-09-18 19:23:07

你在你的配置文件里开头也指定 snd_bcm2835 试试？

atmouse · 2015-09-18 20:25:39

模块的依赖理论上应该由depmod来处理

kkliucongbo · 2015-09-19 05:15:58

百合仙子说：

你在你的配置文件里开头也指定 snd_bcm2835 试试？

/etc/modules-load.d/目录下默认有raspberrypi.conf里面有两行
bcm2708-rng
snd-bcm2835
按理说把fbtft-device放到第三行会依次加载的。但是它就不按照顺序来。很费解

kkliucongbo · 2015-09-19 06:08:57

atmouse 说：

模块的依赖理论上应该由depmod来处理

谢谢了。问题解决了

kkliucongbo · 2015-09-19 06:16:14

百合仙子说：

你在你的配置文件里开头也指定 snd_bcm2835 试试？

哎呀这几天走了弯路。今天一早解决了，一开始也查过lsmod不过没注意。
[root@alarmpi modules-load.d]# lsmod
Module Size Used by
cfg80211 480514 0
evdev 9674 0
joydev 8691 0
hid_logitech_hidpp 9333 0
r8188eu 442903 0
fb_ili9340 3554 1
hid_logitech_dj 10958 0
snd_soc_bcm2708_i2s 6995 0
regmap_mmio 3193 1 snd_soc_bcm2708_i2s
snd_soc_core 158272 1 snd_soc_bcm2708_i2s
i2c_bcm2708 5670 0
snd_compress 8161 1 snd_soc_core
bcm2835_gpiomem 3464 0
snd_pcm_dmaengine 5232 1 snd_soc_core
uio_pdrv_genirq 3285 0
uio 9036 1 uio_pdrv_genirq
sch_fq_codel 7315 6
fbtft_device 35514 0
fbtft 34607 2 fb_ili9340,fbtft_device
syscopyarea 2971 1 fbtft
sysfillrect 3424 1 fbtft
sysimgblt 2186 1 fbtft
fb_sys_fops 1475 1 fbtft
spi_bcm2835 7500 0
snd_bcm2835 21900 0
snd_pcm 86256 3 snd_bcm2835,snd_soc_core,snd_pcm_dmaengine
snd_timer 19906 1 snd_pcm
snd 61579 5 snd_bcm2835,snd_soc_core,snd_timer,snd_pcm,snd_compress
bcm2708_rng 1171 0
rng_core 8018 1 bcm2708_rng
ip_tables 12274 0
x_tables 16490 1 ip_tables
ipv6 348264 22

一直感觉是SPI接口没有加载，试着把这个模块（spi_bcm2835）加到了/etc/modules-load.d/raspberrypi.conf里。果然启动成功了。

cat raspberrypi.conf
bcm2708-rng
snd-bcm2835
spi-bcm2835
fbtft-device

依云 · 2015-09-19 10:52:59

我是说为什么需要 snd-* 呢…………

kkliucongbo · 2015-09-22 09:39:27

百合仙子说：

我是说为什么需要 snd-* 呢…………

文件原有内容，没有删除

Arch Linux

#1 2015-09-18 01:53:35

树莓派模块加载顺序问题。

#2 2015-09-18 19:23:07

Re: 树莓派模块加载顺序问题。

#3 2015-09-18 20:25:39

Re: 树莓派模块加载顺序问题。

#4 2015-09-19 05:15:58

Re: 树莓派模块加载顺序问题。

#5 2015-09-19 06:08:57

Re: 树莓派模块加载顺序问题。

#6 2015-09-19 06:16:14

Re: 树莓派模块加载顺序问题。

#7 2015-09-19 10:52:59

Re: 树莓派模块加载顺序问题。

#8 2015-09-22 09:39:27

Re: 树莓派模块加载顺序问题。

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