Hi John, > John Youn <John.Youn@xxxxxxxxxxxx> hat am 16. August 2016 um 03:30 > geschrieben: > > > On 7/26/2016 11:54 AM, Stefan Wahren wrote: > > In gadget mode On bcm2835 platform the host tx fifo size could be zero. > > So add zero to range and avoid such nonsense errors: > > > > dwc2 20980000.usb: 0 invalid for host_nperio_tx_fifo_size. > > dwc2 20980000.usb: Setting host_nperio_tx_fifo_size to 0 > > dwc2 20980000.usb: 0 invalid for host_perio_tx_fifo_size. > > dwc2 20980000.usb: Setting host_perio_tx_fifo_size to 0 > > Hi Stefan, > > Are those the power on reset values of GNPTXFSIZ and HPTXFSIZ? > > If these values can be 0, I think the patch is ok. But I'm not sure > about that. I can check with some hardware engineers to see under what > conditions this is possible. i'm not sure that i can answer your question correctly. Let me send you some logs and i hope these answer your question. Since the Raspberry Pi Zero with bcm2835 could handle all three dr_mode set in DT ( otg, host, peripherial ), i made 3 logs before this patch is applied: Raspberry Pi Zero dr_mode = "host" Linux raspberrypi 4.7.0-rc7-next-20160719+ #3 Thu Jul 21 17:12:23 UTC 2016 armv6l GNU/Linux [ 2.300866] dwc2_lowlevel_hw_init() [ 2.317961] dwc2 20980000.usb: dwc2: cannot get otg clock [ 2.327328] dwc2_lowlevel_hw_enable() [ 2.334868] dwc2_get_dr_mode() [ 2.341742] dwc2 20980000.usb: Forcing mode to host [ 2.459227] dwc2_get_hwparams() [ 2.466013] dwc2 20980000.usb: Core Release: 2.80a (snpsid=4f54280a) [ 2.466028] dwc2 20980000.usb: hwcfg1=00000000 [ 2.466040] dwc2 20980000.usb: hwcfg2=228ddd50 [ 2.466051] dwc2 20980000.usb: hwcfg3=0ff000e8 [ 2.466061] dwc2 20980000.usb: hwcfg4=1ff00020 [ 2.466071] dwc2 20980000.usb: grxfsiz=00001000 [ 2.466083] dwc2 20980000.usb: gnptxfsiz=01001000 [ 2.466093] dwc2 20980000.usb: hptxfsiz=02002000 [ 2.466106] dwc2 20980000.usb: Detected values from hardware: [ 2.466116] dwc2 20980000.usb: op_mode=0 [ 2.466126] dwc2 20980000.usb: arch=2 [ 2.466136] dwc2 20980000.usb: dma_desc_enable=0 [ 2.466146] dwc2 20980000.usb: power_optimized=0 [ 2.466156] dwc2 20980000.usb: i2c_enable=0 [ 2.466165] dwc2 20980000.usb: hs_phy_type=1 [ 2.466175] dwc2 20980000.usb: fs_phy_type=1 [ 2.466185] dwc2 20980000.usb: utmi_phy_data_width=0 [ 2.466194] dwc2 20980000.usb: num_dev_ep=7 [ 2.466204] dwc2 20980000.usb: num_dev_perio_in_ep=0 [ 2.466213] dwc2 20980000.usb: host_channels=8 [ 2.466223] dwc2 20980000.usb: max_transfer_size=524287 [ 2.466233] dwc2 20980000.usb: max_packet_count=1023 [ 2.466243] dwc2 20980000.usb: nperio_tx_q_depth=0x4 [ 2.466253] dwc2 20980000.usb: host_perio_tx_q_depth=0x4 [ 2.466263] dwc2 20980000.usb: dev_token_q_depth=0x8 [ 2.466273] dwc2 20980000.usb: enable_dynamic_fifo=1 [ 2.466283] dwc2 20980000.usb: en_multiple_tx_fifo=1 [ 2.466293] dwc2 20980000.usb: total_fifo_size=4080 [ 2.466303] dwc2 20980000.usb: host_rx_fifo_size=4096 [ 2.466314] dwc2 20980000.usb: host_nperio_tx_fifo_size=256 [ 2.466324] dwc2 20980000.usb: host_perio_tx_fifo_size=512 [ 2.466332] dwc2 20980000.usb: [ 2.466342] dwc2 20980000.usb: dwc2_set_parameters() [ 2.466356] dwc2 20980000.usb: Setting dma_desc_fs_enable to 0 [ 2.466384] dwc2 20980000.usb: Setting external_id_pin_ctl to 0 [ 2.466395] dwc2 20980000.usb: Setting hibernation to 0 [ 2.466399] dwc2_force_dr_mode() [ 2.473127] dwc2 20980000.usb: Forcing mode to host [ 2.589175] dwc2_hcd_init() [ 2.595685] dwc2 20980000.usb: DWC OTG Controller [ 2.604051] dwc2 20980000.usb: new USB bus registered, assigned bus number 1 [ 2.614688] dwc2 20980000.usb: irq 33, io mem 0x00000000 -------------------------------------------------------------------------------- Raspberry Pi Zero dr_mode = "otg" Linux raspberrypi 4.7.0-rc7-next-20160719+ #3 Thu Jul 21 17:12:23 UTC 2016 armv6l GNU/Linux [ 2.310924] dwc2_lowlevel_hw_init() [ 2.328029] dwc2 20980000.usb: dwc2: cannot get otg clock [ 2.337385] dwc2_lowlevel_hw_enable() [ 2.344917] dwc2_get_dr_mode() [ 2.469263] dwc2_get_hwparams() [ 2.476042] dwc2 20980000.usb: Core Release: 2.80a (snpsid=4f54280a) [ 2.476059] dwc2 20980000.usb: hwcfg1=00000000 [ 2.476072] dwc2 20980000.usb: hwcfg2=228ddd50 [ 2.476082] dwc2 20980000.usb: hwcfg3=0ff000e8 [ 2.476093] dwc2 20980000.usb: hwcfg4=1ff00020 [ 2.476104] dwc2 20980000.usb: grxfsiz=00001000 [ 2.476115] dwc2 20980000.usb: Forcing mode to host [ 2.519251] dwc2 20980000.usb: gnptxfsiz=00201000 [ 2.519267] dwc2 20980000.usb: hptxfsiz=00000000 [ 2.569237] dwc2 20980000.usb: gnptxfsiz=00201000 [ 2.569255] dwc2 20980000.usb: Detected values from hardware: [ 2.569266] dwc2 20980000.usb: op_mode=0 [ 2.569276] dwc2 20980000.usb: arch=2 [ 2.569286] dwc2 20980000.usb: dma_desc_enable=0 [ 2.569296] dwc2 20980000.usb: power_optimized=0 [ 2.569306] dwc2 20980000.usb: i2c_enable=0 [ 2.569315] dwc2 20980000.usb: hs_phy_type=1 [ 2.569325] dwc2 20980000.usb: fs_phy_type=1 [ 2.569335] dwc2 20980000.usb: utmi_phy_data_width=0 [ 2.569345] dwc2 20980000.usb: num_dev_ep=7 [ 2.569354] dwc2 20980000.usb: num_dev_perio_in_ep=0 [ 2.569364] dwc2 20980000.usb: host_channels=8 [ 2.569375] dwc2 20980000.usb: max_transfer_size=524287 [ 2.569386] dwc2 20980000.usb: max_packet_count=1023 [ 2.569397] dwc2 20980000.usb: nperio_tx_q_depth=0x4 [ 2.569407] dwc2 20980000.usb: host_perio_tx_q_depth=0x4 [ 2.569417] dwc2 20980000.usb: dev_token_q_depth=0x8 [ 2.569427] dwc2 20980000.usb: enable_dynamic_fifo=1 [ 2.569437] dwc2 20980000.usb: en_multiple_tx_fifo=1 [ 2.569447] dwc2 20980000.usb: total_fifo_size=4080 [ 2.569458] dwc2 20980000.usb: host_rx_fifo_size=4096 [ 2.569468] dwc2 20980000.usb: host_nperio_tx_fifo_size=32 [ 2.569478] dwc2 20980000.usb: host_perio_tx_fifo_size=0 [ 2.569487] dwc2 20980000.usb: [ 2.569497] dwc2 20980000.usb: dwc2_set_parameters() [ 2.569511] dwc2 20980000.usb: Setting dma_desc_fs_enable to 0 [ 2.569535] dwc2 20980000.usb: Setting external_id_pin_ctl to 0 [ 2.569547] dwc2 20980000.usb: Setting hibernation to 0 [ 2.569573] dwc2 20980000.usb: 0 invalid for host_perio_tx_fifo_size. Check HW configuration. [ 2.585354] dwc2 20980000.usb: Setting host_perio_tx_fifo_size to 0 [ 2.585361] dwc2_force_dr_mode() [ 2.709215] dwc2_gadget_init() [ 2.715815] dwc2 20980000.usb: NonPeriodic TXFIFO size: 16 [ 2.724903] dwc2 20980000.usb: RXFIFO size: 256 [ 2.733024] dwc2 20980000.usb: Periodic TXFIFO 0 size: 0 [ 2.741929] dwc2 20980000.usb: Periodic TXFIFO 1 size: 256 [ 2.750902] dwc2 20980000.usb: Periodic TXFIFO 2 size: 128 [ 2.759776] dwc2 20980000.usb: Periodic TXFIFO 3 size: 128 [ 2.768438] dwc2 20980000.usb: Periodic TXFIFO 4 size: 64 [ 2.776888] dwc2 20980000.usb: Periodic TXFIFO 5 size: 64 [ 2.785266] dwc2 20980000.usb: Periodic TXFIFO 6 size: 64 [ 2.793496] dwc2 20980000.usb: Periodic TXFIFO 7 size: 32 [ 2.801570] dwc2 20980000.usb: Periodic TXFIFO 8 size: 0 [ 2.809443] dwc2 20980000.usb: Periodic TXFIFO 9 size: 0 [ 2.817055] dwc2 20980000.usb: Periodic TXFIFO10 size: 0 [ 2.824633] dwc2 20980000.usb: Periodic TXFIFO11 size: 0 [ 2.832100] dwc2 20980000.usb: Periodic TXFIFO12 size: 0 [ 2.839457] dwc2 20980000.usb: Periodic TXFIFO13 size: 0 [ 2.846659] dwc2 20980000.usb: Periodic TXFIFO14 size: 0 [ 2.853852] dwc2 20980000.usb: Periodic TXFIFO15 size: 0 [ 2.861043] dwc2 20980000.usb: EPs: 8, dedicated fifos, 4080 entries in SPRAM [ 2.887000] dwc2 20980000.usb: bound driver zero [ 2.893565] dwc2_hcd_init() [ 2.898407] dwc2 20980000.usb: DWC OTG Controller [ 2.905079] dwc2 20980000.usb: new USB bus registered, assigned bus number 1 [ 2.914160] dwc2 20980000.usb: irq 33, io mem 0x00000000 ------------------------------------------------------------------------------ Raspberry Pi Zero dr_mode = "peripheral" Linux raspberrypi 4.7.0-rc7-next-20160719+ #3 Thu Jul 21 17:12:23 UTC 2016 armv6l GNU/Linux [ 2.310942] dwc2_lowlevel_hw_init() [ 2.328044] dwc2 20980000.usb: dwc2: cannot get otg clock [ 2.337405] dwc2_lowlevel_hw_enable() [ 2.344937] dwc2_get_dr_mode() [ 2.351820] dwc2 20980000.usb: Forcing mode to device [ 2.469267] dwc2_get_hwparams() [ 2.476052] dwc2 20980000.usb: Core Release: 2.80a (snpsid=4f54280a) [ 2.476067] dwc2 20980000.usb: hwcfg1=00000000 [ 2.476078] dwc2 20980000.usb: hwcfg2=228ddd50 [ 2.476089] dwc2 20980000.usb: hwcfg3=0ff000e8 [ 2.476100] dwc2 20980000.usb: hwcfg4=1ff00020 [ 2.476110] dwc2 20980000.usb: grxfsiz=00001000 [ 2.476123] dwc2 20980000.usb: gnptxfsiz=00201000 [ 2.476135] dwc2 20980000.usb: Detected values from hardware: [ 2.476146] dwc2 20980000.usb: op_mode=0 [ 2.476156] dwc2 20980000.usb: arch=2 [ 2.476166] dwc2 20980000.usb: dma_desc_enable=0 [ 2.476176] dwc2 20980000.usb: power_optimized=0 [ 2.476186] dwc2 20980000.usb: i2c_enable=0 [ 2.476196] dwc2 20980000.usb: hs_phy_type=1 [ 2.476206] dwc2 20980000.usb: fs_phy_type=1 [ 2.476216] dwc2 20980000.usb: utmi_phy_data_width=0 [ 2.476225] dwc2 20980000.usb: num_dev_ep=7 [ 2.476235] dwc2 20980000.usb: num_dev_perio_in_ep=0 [ 2.476245] dwc2 20980000.usb: host_channels=8 [ 2.476256] dwc2 20980000.usb: max_transfer_size=524287 [ 2.476266] dwc2 20980000.usb: max_packet_count=1023 [ 2.476277] dwc2 20980000.usb: nperio_tx_q_depth=0x4 [ 2.476288] dwc2 20980000.usb: host_perio_tx_q_depth=0x4 [ 2.476297] dwc2 20980000.usb: dev_token_q_depth=0x8 [ 2.476308] dwc2 20980000.usb: enable_dynamic_fifo=1 [ 2.476318] dwc2 20980000.usb: en_multiple_tx_fifo=1 [ 2.476328] dwc2 20980000.usb: total_fifo_size=4080 [ 2.476338] dwc2 20980000.usb: host_rx_fifo_size=4096 [ 2.476349] dwc2 20980000.usb: host_nperio_tx_fifo_size=0 [ 2.476359] dwc2 20980000.usb: host_perio_tx_fifo_size=0 [ 2.476368] dwc2 20980000.usb: [ 2.476378] dwc2 20980000.usb: dwc2_set_parameters() [ 2.476391] dwc2 20980000.usb: Setting dma_desc_fs_enable to 0 [ 2.476418] dwc2 20980000.usb: Setting external_id_pin_ctl to 0 [ 2.476429] dwc2 20980000.usb: Setting hibernation to 0 [ 2.476449] dwc2 20980000.usb: 0 invalid for host_rx_fifo_size. Check HW configuration. [ 2.491704] dwc2 20980000.usb: Setting host_rx_fifo_size to 4096 [ 2.491727] dwc2 20980000.usb: 0 invalid for host_nperio_tx_fifo_size. Check HW configuration. [ 2.507853] dwc2 20980000.usb: Setting host_nperio_tx_fifo_size to 0 [ 2.507875] dwc2 20980000.usb: 0 invalid for host_perio_tx_fifo_size. Check HW configuration. [ 2.524246] dwc2 20980000.usb: Setting host_perio_tx_fifo_size to 0 [ 2.524252] dwc2_force_dr_mode() [ 2.531473] dwc2 20980000.usb: Forcing mode to device [ 2.649220] dwc2_gadget_init() [ 2.656183] dwc2 20980000.usb: NonPeriodic TXFIFO size: 16 [ 2.665634] dwc2 20980000.usb: RXFIFO size: 256 [ 2.674009] dwc2 20980000.usb: Periodic TXFIFO 0 size: 0 [ 2.683076] dwc2 20980000.usb: Periodic TXFIFO 1 size: 256 [ 2.692256] dwc2 20980000.usb: Periodic TXFIFO 2 size: 128 [ 2.701280] dwc2 20980000.usb: Periodic TXFIFO 3 size: 128 [ 2.710152] dwc2 20980000.usb: Periodic TXFIFO 4 size: 64 [ 2.718734] dwc2 20980000.usb: Periodic TXFIFO 5 size: 64 [ 2.727175] dwc2 20980000.usb: Periodic TXFIFO 6 size: 64 [ 2.735545] dwc2 20980000.usb: Periodic TXFIFO 7 size: 32 [ 2.743812] dwc2 20980000.usb: Periodic TXFIFO 8 size: 0 [ 2.751878] dwc2 20980000.usb: Periodic TXFIFO 9 size: 0 [ 2.759850] dwc2 20980000.usb: Periodic TXFIFO10 size: 0 [ 2.767724] dwc2 20980000.usb: Periodic TXFIFO11 size: 0 [ 2.775557] dwc2 20980000.usb: Periodic TXFIFO12 size: 0 [ 2.783321] dwc2 20980000.usb: Periodic TXFIFO13 size: 0 [ 2.791008] dwc2 20980000.usb: Periodic TXFIFO14 size: 0 [ 2.798604] dwc2 20980000.usb: Periodic TXFIFO15 size: 0 [ 2.806106] dwc2 20980000.usb: EPs: 8, dedicated fifos, 4080 entries in SPRAM [ 2.832686] dwc2 20980000.usb: bound driver zero -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
