97 lines
3.2 KiB
C
97 lines
3.2 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017, 2018 Scott Shawcroft for Adafruit Industries
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* Copyright (c) 2019 Artur Pacholec
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "fsl_clock.h"
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#include "tusb.h"
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#include "supervisor/linker.h"
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#include "supervisor/usb.h"
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#include "imx_usb.h"
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void init_usb_instance(mp_int_t instance) {
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if (instance < 0) {
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return;
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}
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USBPHY_Type *usb_phy;
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#ifdef USBPHY2
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if (instance == 0) {
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usb_phy = USBPHY1;
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#else
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(void)instance;
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usb_phy = USBPHY;
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#endif
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CLOCK_EnableUsbhs0PhyPllClock(kCLOCK_Usbphy480M, 480000000U);
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CLOCK_EnableUsbhs0Clock(kCLOCK_Usb480M, 480000000U);
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#ifdef USBPHY2
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} else if (instance == 1) {
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CLOCK_EnableUsbhs1PhyPllClock(kCLOCK_Usbphy480M, 480000000U);
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CLOCK_EnableUsbhs1Clock(kCLOCK_Usb480M, 480000000U);
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usb_phy = USBPHY2;
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} else {
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// Unsupported instance
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return;
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}
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#endif
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// Enable PHY support for Low speed device + LS via FS Hub
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usb_phy->CTRL |= USBPHY_CTRL_SET_ENUTMILEVEL2_MASK | USBPHY_CTRL_SET_ENUTMILEVEL3_MASK;
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// Enable all power for normal operation
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usb_phy->PWD = 0;
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// TX Timing
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uint32_t phytx = usb_phy->TX;
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phytx &= ~(USBPHY_TX_D_CAL_MASK | USBPHY_TX_TXCAL45DM_MASK | USBPHY_TX_TXCAL45DP_MASK);
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phytx |= USBPHY_TX_D_CAL(0x0C) | USBPHY_TX_TXCAL45DP(0x06) | USBPHY_TX_TXCAL45DM(0x06);
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usb_phy->TX = phytx;
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}
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void init_usb_hardware(void) {
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init_usb_instance(CIRCUITPY_USB_DEVICE_INSTANCE);
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}
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// Provide the prototypes for the interrupt handlers. The iMX RT SDK doesn't.
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// The SDK only links to them from assembly.
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#ifdef MIMXRT1042_SERIES
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void USB_OTG_IRQHandler(void);
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void PLACE_IN_ITCM(USB_OTG_IRQHandler)(void) {
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#else
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void USB_OTG1_IRQHandler(void);
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void PLACE_IN_ITCM(USB_OTG1_IRQHandler)(void) {
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#endif
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usb_irq_handler(0);
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}
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#ifdef USBPHY2
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void USB_OTG2_IRQHandler(void);
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void PLACE_IN_ITCM(USB_OTG2_IRQHandler)(void) {
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usb_irq_handler(1);
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}
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#endif
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