Hello, I kindly ask for an advice about interrupt working with USB-OTG usb0 on Allwinner A40i. I need to make work usb0 as USB-OTG.
Looks like it's possible somehow: https://lore.kernel.org/linux-arm-kernel/daf5c543-a1d1-04d2-6486-6cc9cd72d...@sholland.org/T/#md5e9ce01feb201041467c136f09e80628f414557 I've used usb-phy driver with support of muxing ohci0(host) and usb0(client) on usb0 pins, mentioned in the link above: https://github.com/wirenboard/linux/blob/dev/v5.10.y/drivers/phy/allwinner/phy-sun4i-usb.c In my case I have pin ID USB OTG = PI11. Some excerpts from my dts file: [quote] / { ... /* ohci0 and ehci0 need to be included to work with USB OTG */ ohci0: usb@1c14400 { compatible = "allwinner,sun8i-r40-ohci", "generic-ohci"; reg = <0x01c14400 0x100>; interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>; clocks = <&ccu CLK_BUS_EHCI0>, <&ccu CLK_BUS_OHCI0>, <&ccu CLK_USB_OHCI0>; resets = <&ccu RST_BUS_EHCI0>, <&ccu RST_BUS_OHCI0>; status = "okay"; }; ehci0: usb@1c14000 { compatible = "allwinner,sun8i-r40-ehci", "generic-ehci"; reg = <0x01c14000 0x100>; interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>; clocks = <&ccu CLK_BUS_EHCI0>, <&ccu CLK_BUS_OHCI0>; resets = <&ccu RST_BUS_EHCI0>, <&ccu RST_BUS_OHCI0>; status = "okay"; }; ... } ... &usb_otg { /* в dtsi defines of usb_otg as dr_mode = "peripheral"; */ status = "okay"; }; &usbphy { dr_mode = "otg"; usb0_id_det-gpios = <PIN_PI 11 GPIO_ACTIVE_HIGH>; usb0_vbus-supply = <®_vcc5v0>; status = "okay"; }; [/quote] USB-OTG works, but the problem is USB-OTG reads pin ID and choose client or host only on OS startup once. After adding many printk and -DDEBUG for several subsystems it seems to me that the problem is PI11 GPIO irq just doesn't run it's handler requested here: https://github.com/wirenboard/linux/blob/dev/v5.10.y/drivers/phy/allwinner/phy-sun4i-usb.c#L951 I observed EINT23 registration in pinctrl sunxi driver: [quote] [ 11.578919] sun4i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl: request IRQ for GPIO 267, return 23 [ 11.587657] devm_request_irq data->id_det_irq: 74, ret: 0 74: 0 0 0 0 sunxi_pio_edge 23 Edge usb0-id-det # cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 26: 0 0 0 0 GICv2 54 Level timer@1c20c00 27: 0 0 0 0 GICv2 29 Level arch_timer 28: 198416 45783 21540 10341 GICv2 30 Level arch_timer 31: 0 0 0 0 GICv2 152 Level arm-pmu 32: 0 0 0 0 GICv2 153 Level arm-pmu 33: 0 0 0 0 GICv2 154 Level arm-pmu 34: 0 0 0 0 GICv2 155 Level arm-pmu 35: 0 0 0 0 GICv2 59 Level 1c02000.dma-controller 37: 0 0 0 0 GICv2 102 Level gpmmu 38: 0 0 0 0 GICv2 104 Level ppmmu0 39: 0 0 0 0 GICv2 107 Level ppmmu1 40: 175 0 0 0 GICv2 101 Level gp 41: 128 0 0 0 GICv2 103 Level pp0 42: 128 0 0 0 GICv2 106 Level pp1 43: 0 0 0 0 GICv2 71 Level ehci_hcd:usb1 44: 0 0 0 0 GICv2 72 Level ohci_hcd:usb2 45: 1289 0 0 0 GICv2 61 Level sun4i-ts 46: 0 0 0 0 GICv2 56 Level 1c20400.rtc 47: 0 0 0 0 GICv2 125 Level 1400000.deinterlace 48: 0 0 0 0 GICv2 126 Level sun8i-ce-ns 49: 0 0 0 0 GICv2 85 Level 1c0e000.video-codec 74: 0 0 0 0 sunxi_pio_edge 23 Edge usb0-id-det 83: 28 0 0 0 GICv2 33 Level ttyS0 84: 0 0 0 0 GICv2 44 Level sun6i-spi 85: 80306 0 0 0 GICv2 39 Level mv64xxx_i2c 86: 0 0 0 0 sunxi-nmi 0 Level axp22x_irq_chip 109: 0 0 0 0 axp22x_irq_chip 22 Edge axp20x-pek-dbr 110: 0 0 0 0 axp22x_irq_chip 23 Edge axp20x-pek-dbf 113: 0 0 0 0 GICv2 40 Level mv64xxx_i2c 114: 0 0 0 0 GICv2 41 Level mv64xxx_i2c 115: 0 0 0 0 GICv2 120 Level mv64xxx_i2c 116: 0 0 0 0 GICv2 121 Level mv64xxx_i2c 117: 0 0 0 0 GICv2 129 Level tvd0 118: 0 0 0 0 GICv2 130 Level tvd1 119: 0 0 0 0 GICv2 131 Level tvd2 120: 0 0 0 0 GICv2 132 Level tvd3 121: 10281 0 0 0 GICv2 68 Level ths 122: 245 0 0 0 GICv2 66 Level sunxi-mmc 123: 5690 0 0 0 GICv2 64 Level sunxi-mmc 129: 0 0 0 0 GICv2 88 Level ahci-sunxi[1c18000.sata] 130: 168336 0 0 0 GICv2 87 Level eth0 131: 81204 0 0 0 GICv2 117 Level eth1 132: 401 0 0 0 GICv2 70 Level musb-hdrc.2.auto 133: 0 0 0 0 GICv2 96 Level ohci_hcd:usb3 134: 0 0 0 0 GICv2 97 Level ohci_hcd:usb4 135: 9114 0 0 0 GICv2 76 Level 1c71000.lcd-controller 136: 13939 0 0 0 GICv2 83 Level 1c73000.lcd-controller 137: 515 0 0 0 GICv2 90 Level 1ee0000.hdmi 138: 0 0 0 0 GICv2 110 Level ehci_hcd:usb5 139: 0 0 0 0 GICv2 108 Level ehci_hcd:usb6 IPI0: 0 0 0 0 CPU wakeup interrupts IPI1: 0 0 0 0 Timer broadcast interrupts IPI2: 71 81 134 106 Rescheduling interrupts IPI3: 5850 17893 6323 6836 Function call interrupts IPI4: 0 0 0 0 CPU stop interrupts IPI5: 16353 2205 1054 417 IRQ work interrupts IPI6: 0 0 0 0 completion interrupts Err: 0 [/quote] I've reconfigured PI11 as GPIO and I've observed change of input state on USB-OTG cable. External interrupt is possible on PI11 - PI11/SPI0_CLK/UART5_RX/EINT23 - everything else is turned of like spi0 or routed to different pins as uart5. Link to syslog excerpts and dts with dtsi: https://disk.yandex.ru/d/0H5tnCl1qQIE2g I really appreciate an advice with links to how debug that. Please, notify my if I can provide some additional info. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/CAKoaSuT7Juvff7Rt8TDmAof9sOZ-C_okTY34s4rkLZ%2B7Jt%3DX8Q%40mail.gmail.com.
