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Code Issues Releases Activity

usb: Split init into PHY init and device init

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CTCaer 2020-11-15 14:45:48 +02:00
parent 721e926a75
commit 8a352bdfe2
1 changed files with 14 additions and 7 deletions
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21
bdk/usb/usbd.c
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@ -242,11 +242,8 @@ static void _usb_charger_detect()
}
}
int usb_device_init()
static void _usb_init_phy()
{
if (usb_init_done)
return 0;
// Configure and enable PLLU.
clock_enable_pllu();
@ -308,7 +305,8 @@ int usb_device_init()
// Enable crystal clock.
CLOCK(CLK_RST_CONTROLLER_UTMIP_PLL_CFG2) |= 0x40000000;
// Enable USB2 tracking.
// Enable USB2 tracking clock.
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_Y_SET) = BIT(CLK_Y_USB2_TRK);
CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_USB2_HSIC_TRK) = (CLOCK(CLK_RST_CONTROLLER_CLK_SOURCE_USB2_HSIC_TRK) & 0xFFFFFF00) | 6; // Set trank divisor to 4.
@ -331,7 +329,7 @@ int usb_device_init()
// TRK cycle done. Force PDTRK input into power down.
USB(USB1_UTMIP_BIAS_CFG1) = (USB(USB1_UTMIP_BIAS_CFG1) & 0xFF7FFFFF) | 1;
// Disable USB2_TRK clock and configure UTMIP misc.
// Disable USB2 tracking clock and configure UTMIP misc.
CLOCK(CLK_RST_CONTROLLER_CLK_ENB_Y_CLR) = BIT(CLK_Y_USB2_TRK);
CLOCK(CLK_RST_CONTROLLER_UTMIP_PLL_CFG2) = (CLOCK(CLK_RST_CONTROLLER_UTMIP_PLL_CFG2) & 0xFEFFFFEA) | 0x2000000 | 0x28 | 2;
usleep(1);
@ -340,7 +338,7 @@ int usb_device_init()
usleep(1);
// Clear power downs on UTMIP ID and VBUS wake up, PD, PD2, PDZI, PDCHRP, PDDR.
PMC(APBDEV_PMC_USB_AO) &= 0xFFFFFFF3; // UTMIP ID and VBUS wake up.
PMC(APBDEV_PMC_USB_AO) &= 0xFFFFFFF3; // UTMIP ID and VBUS wake up.
usleep(1);
USB(USB1_UTMIP_XCVR_CFG0) &= 0xFFFFBFFF; // UTMIP_FORCE_PD_POWERDOWN.
usleep(1);
@ -352,6 +350,15 @@ int usb_device_init()
usleep(1);
USB(USB1_UTMIP_XCVR_CFG1) &= 0xFFFFFFEF; // UTMIP_FORCE_PDDR_POWERDOWN.
usleep(1);
}
int usb_device_init()
{
if (usb_init_done)
return 0;
// Initialize USB2 controller PHY.
_usb_init_phy();
// AHB USB performance cfg.
AHB_GIZMO(AHB_GIZMO_AHB_MEM) |= AHB_MEM_ENB_FAST_REARBITRATE;