1629faf8b3
This allows you to initialize usb_host.Port once successfully and then returns the same object as long as you pass the same arguments in. It does allow you to fix incorrect pins but not switching from one valid set to another. (It needs a reset for that.) This also moves hcd cache operations to RAM so that they don't access the cache when doing maintenance.
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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