pwm_regulator {
compatible = "rockchip_pwm_regulator";
pwms = ;
我看wiki里面是控制什么backlight的，但是就算我全部都设为disabled还是无法申请，对应的硬件设备是你自己接LCD时的屏幕背光 xaityyy 发表于 2016-8-28 16:21
dmesg | tee dmesg.log。然后发dmesg.log出来。
如果是串口，打开log，就会有log到本地。
是这个吗 我选了一段跟申请有关的
[ 2.300069] init success
[ 2.300247] probe device ff9c0000.hevc_service
[ 2.300856] hevc_service: power on
[ 2.301996] checking hw id 6867
[ 2.302857] vcodec hevc_service: vcodec ion client create success!
[ 2.303753] hevc_service: power off...
[ 2.303855] done
[ 2.303909] init success
[ 2.304279] rknandbase v1.0 2014-03-31
[ 2.304906] rknand_probe clk rate = 148500000
[ 2.305302] rknand_driver:ret = 0
[ 2.306411] audit: initializing netlink socket (disabled)
[ 2.306553] type=2000 audit(1.270:1): initialized
[ 2.309435] bounce pool size: 64 pages
[ 2.324875] fuse init (API version 7.22)
[ 2.326121] msgmni has been set to 1424
[ 2.326307] SELinux:Registering netfilter hooks
[ 2.332471] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 246)
[ 2.332571] io scheduler noop registered
[ 2.332630] io scheduler deadline registered
[ 2.332971] io scheduler cfq registered (default)
[ 2.334435] Console: switching to colour frame buffer device 240x67
[ 2.383801] rga ff920000.rga: rga ion client create success!
[ 2.384451] rga: Driver loaded succesfully
[ 2.386058] IEP Power ON
[ 2.386290] iep ion client create success!
[ 2.387440] rk_iommu ff900800.iep_mmu: (iep) Enabled
[ 2.387697] rk_iommu ff900800.iep_mmu: rockchip_iommu_attach_device: Attached new IOMMU with pgtable 0x2e244000
[ 2.387796] IEP Power OFF
[ 2.387962] rk_iommu ff900800.iep_mmu: (iep) Disabled
[ 2.388210] rk_iommu ff900800.iep_mmu: rockchip_iommu_detach_device: Detached IOMMU with pgtable 0x2e244000
[ 2.388635] IEP Driver loaded succesfully
[ 2.389093] Module initialized.
[ 2.391763] dma-pl330 ffb20000.pdma: Loaded driver for PL330 DMAC-2364208
[ 2.392107] dma-pl330 ffb20000.pdma: DBUFF-64x8bytes Num_Chans-5 Num_Peri-6 Num_Events-10
[ 2.396826] dma-pl330 ff250000.pdma: Loaded driver for PL330 DMAC-2364208
[ 2.397169] dma-pl330 ff250000.pdma: DBUFF-128x8bytes Num_Chans-8 Num_Peri-20 Num_Events-16
[ 2.398304] pwm-voltage-regulator pwm_regulator.22: unable to request PWM, trying legacy API
[ 2.398695] pwm-voltage-regulator pwm_regulator.22: unable to request legacy PWM
[ 2.399018] pwm_regulator_probe:error
[ 2.399235] platform pwm_regulator.22: Driver pwm-voltage-regulator requests probe deferral
[ 2.400625] rk_serial.c v1.8 2014-03-04
[ 2.401434] ff180000.serial: ttyS0 at MMIO 0xff180000 (irq = 87) is a rk29_serial.0
[ 2.402365] serial ff180000.serial: membase f0172000
[ 2.403007] ff690000.serial: ttyS2 at MMIO 0xff690000 (irq = 89) is a rk29_serial.2
zzj 发表于 2016-8-30 15:31
我看wiki里面是控制什么backlight的，但是就算我全部都设为disabled还是无法申请，对应的硬件设备是你自 ...
你看我发的这个帖子,按照帖子的方法pwm1可以使用http://developer.t-firefly.com/thread-10801-1-1.html
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