Hi Minas, I am having issues with dwc2 gadget on RK3308 (Rock Pi S). Kernel 6.6.2.When lightly loading EP OUT with UAC2, EP OUT works OK. When increasing the packet size (960 bytes in the iso packet), the data delivery stops completely. Method u_audio.c:u_audio_iso_complete stops being called, it's like as if the incoming stream reception got stuck.
Only the function f_uac2 is used on the gadget.Debug log from gadget.c + u_audio.c (logging all calls of u_audio_iso_complete including !req->status) is attached. Starts of playback on the host are marked with this logs in the dump:
g_audio gadget.0: start capture with rate 192000 Other debug files are below.The SoC is quite weak (A35, 1GHz), it may be that it's not capable of full HS iso bandwidth. But maybe it's just some suboptimal configuration of DMA/DWC2.
Of course I am ready to provide any other debug info.
Thank you very much for any help.
With regards,
Pavel.
This is EPs overview from the host + packetsize:
Playback:
Status: Running
Interface = 1
Altset = 1
Packet Size = 1000
Momentary freq = 192000 Hz (0x18.0000)
Feedback Format = 16.16
Interface 1
Altset 1
Format: S32_LE
Channels: 10
Endpoint: 0x02 (2 OUT) (ASYNC)
Rates: 192000
Data packet interval: 125 us
Bits: 32
Channel map: FL FR FC LFE RL RR FLC FRC RC SL
Sync Endpoint: 0x83 (3 IN)
Sync EP Interface: 1
Sync EP Altset: 1
Implicit Feedback Mode: No
Capture:
Status: Stop
Interface 2
Altset 1
Format: S32_LE
Channels: 10
Endpoint: 0x85 (5 IN) (ASYNC)
Rates: 192000
Data packet interval: 125 us
Bits: 32
Channel map: FL FR FC LFE RL RR FLC FRC RC SL
root@rock-pi-s:/sys/kernel/debug/usb/ff400000.usb# cat ep2out
Endpoint index 2, named ep2out, dir out:
DIEPCTL=0x00000400, DOEPCTL=0x800483e8
DIEPDMA=0x92b8b5a4, DOEPDMA=0x1ba01008
DIEPINT=0x000002a0, DOEPINT=0x00002010
DIEPTSIZ=0x00000000, DOEPTSIZ=0x1f27b8c0
mps 1000
total_data=0
request list (00000000f7fd142e,00000000900d6fbc):
req 0000000074dc3bc0: 1000 bytes @0000000074c79a73, 0 done, res -115
req 00000000980b129b: 1000 bytes @000000006ef8394b, 0 done, res -115
RXFIFO is large enough for one full HS iso packet (we calculated it in
the past to be around 304 bytes minimum). FIFOs fit the 972 bytes of
total_fifo_size:
root@rock-pi-s:/sys/kernel/debug/usb/ff400000.usb# cat fifo Non-periodic FIFOs: RXFIFO: Size 310 NPTXFIFO: Size 16, Start 0x00000136 Periodic TXFIFOs: DPTXFIFO 1: Size 256, Start 0x00000146 DPTXFIFO 2: Size 128, Start 0x00000246 DPTXFIFO 3: Size 128, Start 0x000002c6 DPTXFIFO 4: Size 64, Start 0x00000346 DPTXFIFO 5: Size 32, Start 0x00000386 DPTXFIFO 6: Size 16, Start 0x000003a6 root@rock-pi-s:/sys/kernel/debug/usb/ff400000.usb# cat hw_params op_mode : 0 arch : 2 dma_desc_enable : 1 enable_dynamic_fifo : 1 en_multiple_tx_fifo : 1 rx_fifo_size : 1024 host_nperio_tx_fifo_size : 0 dev_nperio_tx_fifo_size : 16 host_perio_tx_fifo_size : 0 nperio_tx_q_depth : 4 host_perio_tx_q_depth : 4 dev_token_q_depth : 8 max_transfer_size : 524287 max_packet_count : 1023 host_channels : 9 hs_phy_type : 1 fs_phy_type : 0 i2c_enable : 0 num_dev_ep : 9 num_dev_perio_in_ep : 0 total_fifo_size : 972 power_optimized : 1 utmi_phy_data_width : 1 snpsid : 0x4f54310a dev_ep_dirs : 0x6664 root@rock-pi-s:/sys/kernel/debug/usb/ff400000.usb# cat params otg_caps.hnp_support : 0 otg_caps.srp_support : 0 otg_caps.otg_rev : 0 dma_desc_enable : 0 dma_desc_fs_enable : 0 speed : 0 enable_dynamic_fifo : 1 en_multiple_tx_fifo : 1 host_rx_fifo_size : 525 host_nperio_tx_fifo_size : 128 host_perio_tx_fifo_size : 256 max_transfer_size : 524287 max_packet_count : 1023 host_channels : 0 phy_type : 1 phy_utmi_width : 16 phy_ulpi_ddr : 0 phy_ulpi_ext_vbus : 0 i2c_enable : 0 ipg_isoc_en : 0 ulpi_fs_ls : 0 host_support_fs_ls_low_power : 0 host_ls_low_power_phy_clk : 0 activate_stm_fs_transceiver : 0 activate_stm_id_vb_detection : 0 ts_dline : 0 reload_ctl : 1 ahbcfg : 0xe uframe_sched : 1 external_id_pin_ctl : 0 power_down : 0 lpm : 0 lpm_clock_gating : 0 besl : 0 hird_threshold_en : 0 hird_threshold : 4 service_interval : 0 host_dma : 0 g_dma : 1 g_dma_desc : 1 g_rx_fifo_size : 310 g_np_tx_fifo_size : 16 g_tx_fifo_size[0] : 0 g_tx_fifo_size[1] : 256 g_tx_fifo_size[2] : 128 g_tx_fifo_size[3] : 128 g_tx_fifo_size[4] : 64 g_tx_fifo_size[5] : 32 g_tx_fifo_size[6] : 16 g_tx_fifo_size[7] : 0 g_tx_fifo_size[8] : 0 g_tx_fifo_size[9] : 0 g_tx_fifo_size[10] : 0 g_tx_fifo_size[11] : 0 g_tx_fifo_size[12] : 0 g_tx_fifo_size[13] : 0 g_tx_fifo_size[14] : 0 g_tx_fifo_size[15] : 0 root@rock-pi-s:/sys/kernel/debug/usb/ff400000.usb# cat regdump GOTGCTL = 0x000d0000 GOTGINT = 0x00000000 GAHBCFG = 0x0000002f GUSBCFG = 0x4000140f GRSTCTL = 0x40000000 GINTSTS = 0x0438c0ba GINTMSK = 0xd88c3c44 GRXSTSR = 0x51643c02 GRXFSIZ = 0x00000136 GNPTXFSIZ = 0x00100136 GNPTXSTS = 0x00080010 GI2CCTL = 0x00000000 GPVNDCTL = 0x00000000 GGPIO = 0x00000000 GUID = 0x32000001 GSNPSID = 0x4f54310a GHWCFG1 = 0x00006664 GHWCFG2 = 0x228e2450 GHWCFG3 = 0x03cc90e8 GHWCFG4 = 0xdbf04030 GLPMCFG = 0x00000000 GPWRDN = 0x00600010 GDFIFOCFG = 0x03b603cc ADPCTL = 0x00000000 HPTXFSIZ = 0x00000000 DPTXFSIZN(1) = 0x01000146 DPTXFSIZN(2) = 0x00800246 DPTXFSIZN(3) = 0x008002c6 DPTXFSIZN(4) = 0x00400346 DPTXFSIZN(5) = 0x00200386 DPTXFSIZN(6) = 0x001003a6 DPTXFSIZN(7) = 0x00200386 DPTXFSIZN(8) = 0x001003a6 DPTXFSIZN(9) = 0x01000146 DPTXFSIZN(10) = 0x00800246 DPTXFSIZN(11) = 0x008002c6 DPTXFSIZN(12) = 0x00400346 DPTXFSIZN(13) = 0x00200386 DPTXFSIZN(14) = 0x001003a6 DPTXFSIZN(15) = 0x00200386 DCFG = 0x008402f0 DCTL = 0x00000000 DSTS = 0x001ef900 DIEPMSK = 0x0000220f DOEPMSK = 0x0000023f DAINT = 0x02140000 DAINTMSK = 0x0005000b DTKNQR1 = 0x00000000 DTKNQR2 = 0x00000000 DTKNQR3 = 0x0c100020 DTKNQR4 = 0x00000000 DVBUSDIS = 0x00000b8f DVBUSPULSE = 0x000002c6 DIEPCTL(0) = 0x00028000 DIEPCTL(1) = 0x018c8006 DIEPCTL(2) = 0x00000400 DIEPCTL(3) = 0x01448004 DIEPCTL(4) = 0x00000400 DIEPCTL(5) = 0x004603e8 DIEPCTL(6) = 0x00000400 DIEPCTL(7) = 0x00000400 DIEPCTL(8) = 0x00000400 DIEPCTL(9) = 0x00000400 DIEPCTL(10) = 0x00000400 DIEPCTL(11) = 0x00000400 DIEPCTL(12) = 0x00000400 DIEPCTL(13) = 0x00000400 DIEPCTL(14) = 0x00000400 DIEPCTL(15) = 0x00000400 DOEPCTL(0) = 0x80028000 DOEPCTL(1) = 0x00000400 DOEPCTL(2) = 0x800483e8 DOEPCTL(3) = 0x00000400 DOEPCTL(4) = 0x00000400 DOEPCTL(5) = 0x00000400 DOEPCTL(6) = 0x00000400 DOEPCTL(7) = 0x00000400 DOEPCTL(8) = 0x00000400 DOEPCTL(9) = 0x00000400 DOEPCTL(10) = 0x00000400 DOEPCTL(11) = 0x00000400 DOEPCTL(12) = 0x00000400 DOEPCTL(13) = 0x00000400 DOEPCTL(14) = 0x00000400 DOEPCTL(15) = 0x00000400 DIEPINT(0) = 0x00000090 DIEPINT(1) = 0x00000090 DIEPINT(2) = 0x000002a0 DIEPINT(3) = 0x00000090 DIEPINT(4) = 0x000002a0 DIEPINT(5) = 0x000000c0 DIEPINT(6) = 0x000002a0 DIEPINT(7) = 0x00000080 DIEPINT(8) = 0x00000080 DIEPINT(9) = 0x00000080 DIEPINT(10) = 0x000002a0 DIEPINT(11) = 0x000002a0 DIEPINT(12) = 0x000002a0 DIEPINT(13) = 0x000002a0 DIEPINT(14) = 0x000002a0 DIEPINT(15) = 0x000002a0 DOEPINT(0) = 0x00002000 DOEPINT(1) = 0x00000000 DOEPINT(2) = 0x00002010 DOEPINT(3) = 0x00000000 DOEPINT(4) = 0x00000020 DOEPINT(5) = 0x00000000 DOEPINT(6) = 0x00000000 DOEPINT(7) = 0x00000000 DOEPINT(8) = 0x00000000 DOEPINT(9) = 0x00000220 DOEPINT(10) = 0x00000000 DOEPINT(11) = 0x00000000 DOEPINT(12) = 0x00000000 DOEPINT(13) = 0x00000000 DOEPINT(14) = 0x00000000 DOEPINT(15) = 0x00000000 DIEPTSIZ(0) = 0x00080052 DIEPTSIZ(1) = 0x00000000 DIEPTSIZ(2) = 0x00000000 DIEPTSIZ(3) = 0x11d81ef7 DIEPTSIZ(4) = 0x00000000 DIEPTSIZ(5) = 0x00000000 DIEPTSIZ(6) = 0x00000000 DIEPTSIZ(7) = 0x00000000 DIEPTSIZ(8) = 0x00000000 DIEPTSIZ(9) = 0x00000000 DIEPTSIZ(10) = 0x00000000 DIEPTSIZ(11) = 0x00000000 DIEPTSIZ(12) = 0x00000000 DIEPTSIZ(13) = 0x00000000 DIEPTSIZ(14) = 0x00000000 DIEPTSIZ(15) = 0x00000000 DOEPTSIZ(0) = 0x2000005e DOEPTSIZ(1) = 0x00000000 DOEPTSIZ(2) = 0x1f27b8c0 DOEPTSIZ(3) = 0x00000000 DOEPTSIZ(4) = 0x00000000 DOEPTSIZ(5) = 0x00000000 DOEPTSIZ(6) = 0x00000000 DOEPTSIZ(7) = 0x00000000 DOEPTSIZ(8) = 0x00000000 DOEPTSIZ(9) = 0x00000000 DOEPTSIZ(10) = 0x00000000 DOEPTSIZ(11) = 0x00000000 DOEPTSIZ(12) = 0x00000000 DOEPTSIZ(13) = 0x00000000 DOEPTSIZ(14) = 0x00000000 DOEPTSIZ(15) = 0x00000000 DIEPDMA(0) = 0x0e693000 DIEPDMA(1) = 0x86711010 DIEPDMA(2) = 0x92b8b5a4 DIEPDMA(3) = 0x1ba02008 DIEPDMA(4) = 0x92b8b5a4 DIEPDMA(5) = 0x2fae0710 DIEPDMA(6) = 0x92b8b5a4 DIEPDMA(7) = 0x43c7ba7f DIEPDMA(8) = 0x0cc64000 DIEPDMA(9) = 0x57447266 DIEPDMA(10) = 0x92b8b5a4 DIEPDMA(11) = 0x92b8b5a4 DIEPDMA(12) = 0x92b8b5a4 DIEPDMA(13) = 0x92b8b5a4 DIEPDMA(14) = 0x92b8b5a4 DIEPDMA(15) = 0x92b8b5a4 DOEPDMA(0) = 0x1ba01000 DOEPDMA(1) = 0xa8800c26 DOEPDMA(2) = 0x1ba01008 DOEPDMA(3) = 0xa8800c26 DOEPDMA(4) = 0x6db46af8 DOEPDMA(5) = 0xa8800c26 DOEPDMA(6) = 0x1291dfd8 DOEPDMA(7) = 0xa8800c26 DOEPDMA(8) = 0x82d9ef90 DOEPDMA(9) = 0x0309d816 DOEPDMA(10) = 0xa8800c26 DOEPDMA(11) = 0xa8800c26 DOEPDMA(12) = 0xa8800c26 DOEPDMA(13) = 0xa8800c26 DOEPDMA(14) = 0xa8800c26 DOEPDMA(15) = 0xa8800c26 DTXFSTS(0) = 0x00000010 DTXFSTS(1) = 0x00000010 DTXFSTS(2) = 0x00000010 DTXFSTS(3) = 0x00000020 DTXFSTS(4) = 0x00000010 DTXFSTS(5) = 0x00000100 DTXFSTS(6) = 0x00000010 DTXFSTS(7) = 0x00000010 DTXFSTS(8) = 0x00000010 DTXFSTS(9) = 0x00000010 DTXFSTS(10) = 0x00000010 DTXFSTS(11) = 0x00000010 DTXFSTS(12) = 0x00000010 DTXFSTS(13) = 0x00000010 DTXFSTS(14) = 0x00000010 DTXFSTS(15) = 0x00000010 PCGCTL = 0x00000000 HCFG = 0x008402f0 HFIR = 0x00000b8f HFNUM = 0x0b1803df HPTXSTS = 0x00080100 HAINT = 0x00000002 HAINTMSK = 0x00000007 HFLBADDR = 0x00000000 HPRT0 = 0x00000000 HCCHAR(0) = 0x018c8006 HCCHAR(1) = 0x00000400 HCCHAR(2) = 0x800483e8 HCCHAR(3) = 0x00000400 HCCHAR(4) = 0x00000400 HCCHAR(5) = 0x00000400 HCCHAR(6) = 0x00000400 HCCHAR(7) = 0x00000400 HCCHAR(8) = 0x00000400 HCCHAR(9) = 0x00000400 HCCHAR(10) = 0x00000400 HCCHAR(11) = 0x00000400 HCCHAR(12) = 0x00000400 HCCHAR(13) = 0x00000400 HCCHAR(14) = 0x00000400 HCCHAR(15) = 0x00000400 HCSPLT(0) = 0x00000000 HCSPLT(1) = 0x00000000 HCSPLT(2) = 0x00000000 HCSPLT(3) = 0x00000000 HCSPLT(4) = 0x00000000 HCSPLT(5) = 0x00000000 HCSPLT(6) = 0x00000000 HCSPLT(7) = 0x00000000 HCSPLT(8) = 0x00000000 HCSPLT(9) = 0x00000000 HCSPLT(10) = 0x00000000 HCSPLT(11) = 0x00000000 HCSPLT(12) = 0x00000000 HCSPLT(13) = 0x00000000 HCSPLT(14) = 0x00000000 HCSPLT(15) = 0x00000000 HCINT(0) = 0x00000010 HCINT(1) = 0x00000000 HCINT(2) = 0x00002010 HCINT(3) = 0x00000000 HCINT(4) = 0x00000020 HCINT(5) = 0x00000000 HCINT(6) = 0x00000000 HCINT(7) = 0x00000000 HCINT(8) = 0x00000000 HCINT(9) = 0x00000220 HCINT(10) = 0x00000000 HCINT(11) = 0x00000000 HCINT(12) = 0x00000000 HCINT(13) = 0x00000000 HCINT(14) = 0x00000000 HCINT(15) = 0x00000000 HCINTMSK(0) = 0x0000020f HCINTMSK(1) = 0x00000000 HCINTMSK(2) = 0x00000000 HCINTMSK(3) = 0x00000000 HCINTMSK(4) = 0x00000000 HCINTMSK(5) = 0x00000000 HCINTMSK(6) = 0x00000000 HCINTMSK(7) = 0x00000000 HCINTMSK(8) = 0x00000000 HCINTMSK(9) = 0x00000000 HCINTMSK(10) = 0x00000000 HCINTMSK(11) = 0x00000000 HCINTMSK(12) = 0x00000000 HCINTMSK(13) = 0x00000000 HCINTMSK(14) = 0x00000000 HCINTMSK(15) = 0x00000000 HCTSIZ(0) = 0x00000000 HCTSIZ(1) = 0x00000000 HCTSIZ(2) = 0x1f27b8c0 HCTSIZ(3) = 0x00000000 HCTSIZ(4) = 0x00000000 HCTSIZ(5) = 0x00000000 HCTSIZ(6) = 0x00000000 HCTSIZ(7) = 0x00000000 HCTSIZ(8) = 0x00000000 HCTSIZ(9) = 0x00000000 HCTSIZ(10) = 0x00000000 HCTSIZ(11) = 0x00000000 HCTSIZ(12) = 0x00000000 HCTSIZ(13) = 0x00000000 HCTSIZ(14) = 0x00000000 HCTSIZ(15) = 0x00000000 HCDMA(0) = 0x1ba01000 HCDMA(1) = 0xa8800c26 HCDMA(2) = 0x1ba01008 HCDMA(3) = 0xa8800c26 HCDMA(4) = 0x6db46af8 HCDMA(5) = 0xa8800c26 HCDMA(6) = 0x1291dfd8 HCDMA(7) = 0xa8800c26 HCDMA(8) = 0x82d9ef90 HCDMA(9) = 0x0309d816 HCDMA(10) = 0xa8800c26 HCDMA(11) = 0xa8800c26 HCDMA(12) = 0xa8800c26 HCDMA(13) = 0xa8800c26 HCDMA(14) = 0xa8800c26 HCDMA(15) = 0xa8800c26 HCDMAB(0) = 0x069e9ff0 HCDMAB(1) = 0xa8800c26 HCDMAB(2) = 0x05eaf3c0 HCDMAB(3) = 0xa8800c26 HCDMAB(4) = 0x1f0d193f HCDMAB(5) = 0xa8800c26 HCDMAB(6) = 0x7f72548c HCDMAB(7) = 0xa8800c26 HCDMAB(8) = 0x7795e924 HCDMAB(9) = 0xc36c019a HCDMAB(10) = 0xa8800c26 HCDMAB(11) = 0xa8800c26 HCDMAB(12) = 0xa8800c26 HCDMAB(13) = 0xa8800c26 HCDMAB(14) = 0xa8800c26 HCDMAB(15) = 0xa8800c26
<<attachment: dmesg.zip>>
