mirror of
https://github.com/Fishwaldo/OBLFR.git
synced 2025-03-15 19:31:28 +00:00
USB PHY power up code (#9)
* USB PHY power up code * Quick flag to force host or device configuration. Move to a Kconfig var later * Move usb code to mailbox component * Make USB setup api more consistent with other peripherals * Just update the sdkconfig.default Until USB lands in the buildroot/yocto images, keep this by default disabled. --------- Co-authored-by: Justin Hammond <justin@dynam.ac>
This commit is contained in:
Grant Olson
GitHub
parent
5bdc52f655
commit
92bde04ef7
6 changed files with 219 additions and 3 deletions
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@ -1,4 +1,4 @@
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sdk_generate_library(oblfr_mailbox)
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sdk_add_include_directories(include)
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sdk_library_add_sources(${CMAKE_CURRENT_SOURCE_DIR}/src/oblfr_mailbox.c)
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sdk_library_add_sources(${CMAKE_CURRENT_SOURCE_DIR}/src/oblfr_mailbox.c ${CMAKE_CURRENT_SOURCE_DIR}/src/oblfr_usb_peripheral.c )
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@ -27,6 +27,14 @@ config COMPONENT_MAILBOX_IRQFWD_USB
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help
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Curently disabled as USB is not working
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config COMPONENT_MAILBOX_USB_HOST
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depends on COMPONENT_MAILBOX_IRQFWD_USB
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bool "Set USB to HOST mode"
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default n
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help
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By default USB operates in peripheral mode. Set this to use the
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USB adapter as a host device.
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config COMPONENT_MAILBOX_IRQFWD_GPIO
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bool "Enable IRQ forwarding for GPIO"
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default y
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86
components/mailbox/include/oblfr_usb_peripheral.h
Normal file
86
components/mailbox/include/oblfr_usb_peripheral.h
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@ -0,0 +1,86 @@
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// Portions Copyright () 2023 OpenBuffalo
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/**
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******************************************************************************
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* @file usb_v2_reg.h
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* @version V1.0
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* @date 2022-08-15
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* @brief This file is the description of.IP register
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2020 Bouffalo Lab</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of Bouffalo Lab nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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#ifndef __OBLFR_USBPHY_H__
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#include <stdint.h>
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#include "oblfr_common.h"
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oblfr_err_t setup_usb_peripheral(void);
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// SUBSYSTEMS
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#define BLFB_USB_BASE ((uint32_t)0x20072000)
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#define BFLB_PDS_BASE ((uint32_t)0x2000e000)
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// PDS REGISTERS
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#define PDS_USB_CTL_OFFSET (0x500) /* usb_ctl */
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#define PDS_USB_PHY_CTRL_OFFSET (0x504) /* usb_phy_ctrl */
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// PDS REGISTER VALUES
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/* 0x500 : usb_ctl */
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#define PDS_REG_USB_SW_RST_N (1 << 0U)
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#define PDS_REG_USB_EXT_SUSP_N (1 << 1U)
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#define PDS_REG_USB_WAKEUP (1 << 2U)
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#define PDS_REG_USB_L1_WAKEUP (1 << 3U)
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#define PDS_REG_USB_DRVBUS_POL (1 << 4U)
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#define PDS_REG_USB_IDDIG (1 << 5U)
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/* 0x504 : usb_phy_ctrl */
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#define PDS_REG_USB_PHY_PONRST (1 << 0U)
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#define PDS_REG_USB_PHY_OSCOUTEN (1 << 1U)
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#define PDS_REG_USB_PHY_XTLSEL_SHIFT (2U)
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#define PDS_REG_USB_PHY_XTLSEL_MASK (0x3 << PDS_REG_USB_PHY_XTLSEL_SHIFT)
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#define PDS_REG_USB_PHY_XTLSEL_MASK (0x3 << PDS_REG_USB_PHY_XTLSEL_SHIFT)
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#define PDS_REG_USB_PHY_OUTCLKSEL (1 << 4U)
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#define PDS_REG_USB_PHY_PLLALIV (1 << 5U)
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#define PDS_REG_PU_USB20_PSW (1 << 6U)
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// USB REGS
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#define USB_GLB_INT_OFFSET (0xC4) /* GLB_INT */
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/* 0xC4 : GLB_INT */
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#define USB_MDEV_INT (1 << 0U)
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#define USB_MOTG_INT (1 << 1U)
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#define USB_MHC_INT (1 << 2U)
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#define USB_POLARITY (1 << 3U)
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#endif
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@ -14,6 +14,7 @@
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#endif
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#include "oblfr_mailbox.h"
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#include "oblfr_usb_peripheral.h"
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#define DBG_TAG "MBOX"
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#include "log.h"
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@ -415,6 +416,13 @@ oblfr_err_t oblfr_mailbox_init()
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}
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#endif
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#ifdef CONFIG_COMPONENT_MAILBOX_IRQFWD_USB
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if (setup_usb_peripheral() != SUCCESS) {
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LOG_E("Failed to setup USB peripheral\r\n");
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return OBLFR_ERR_ERROR;
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}
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#endif
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return OBLFR_OK;
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}
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@ -443,4 +451,3 @@ oblfr_err_t oblfr_mailbox_dump()
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oblfr_mailbox_signal_unlock(false);
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return OBLFR_OK;
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}
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115
components/mailbox/src/oblfr_usb_peripheral.c
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115
components/mailbox/src/oblfr_usb_peripheral.c
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@ -0,0 +1,115 @@
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//
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// This is the bare bones code to power up the USB subsystem so that
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// it can be used once the system is booted.
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//
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// All code was taken from the bl_mcu_sdk with adaptations, primarily
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// from the file:
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//
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// drivers/lhal/src/bflb_usb_v2.c
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//
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// Portions Copyright (c) 2023 OpenBuffalo
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/**
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* @brief
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*
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* Copyright (c) 2021 Bouffalolab team
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*/
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#include <arch/risc-v/riscv_arch.h>
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#include <hardware/usb_v2_reg.h>
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#include <board.h>
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#include <bflb_mtimer.h>
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#include "oblfr_usb_peripheral.h"
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#define DBG_TAG "USB"
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#include "log.h"
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// Enable USB A mode instead of B
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#define USB_HOST
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oblfr_err_t setup_usb_peripheral(void)
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{
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uint32_t regval;
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/* USB_PHY_CTRL[3:2] reg_usb_phy_xtlsel=0 */
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/* 2000e504 = 0x40; #100; USB_PHY_CTRL[6] reg_pu_usb20_psw=1 (VCC33A) */
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/* 2000e504 = 0x41; #500; USB_PHY_CTRL[0] reg_usb_phy_ponrst=1 */
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/* 2000e500 = 0x20; #100; USB_CTL[0] reg_usb_sw_rst_n=0 */
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/* 2000e500 = 0x22; #500; USB_CTL[1] reg_usb_ext_susp_n=1 */
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/* 2000e500 = 0x23; #100; USB_CTL[0] reg_usb_sw_rst_n=1 */
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/* #1.2ms; wait UCLK */
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/* wait(soc616_b0.usb_uclk); */
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LOG_I("Initializing USB...\r\n");
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regval = getreg32(BFLB_PDS_BASE + PDS_USB_PHY_CTRL_OFFSET);
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regval &= ~PDS_REG_USB_PHY_XTLSEL_MASK;
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putreg32(regval, BFLB_PDS_BASE + PDS_USB_PHY_CTRL_OFFSET);
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regval = getreg32(BFLB_PDS_BASE + PDS_USB_PHY_CTRL_OFFSET);
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regval |= PDS_REG_PU_USB20_PSW;
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putreg32(regval, BFLB_PDS_BASE + PDS_USB_PHY_CTRL_OFFSET);
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regval = getreg32(BFLB_PDS_BASE + PDS_USB_PHY_CTRL_OFFSET);
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regval |= PDS_REG_USB_PHY_PONRST;
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putreg32(regval, BFLB_PDS_BASE + PDS_USB_PHY_CTRL_OFFSET);
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/* greater than 5T */
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bflb_mtimer_delay_us(1);
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regval = getreg32(BFLB_PDS_BASE + PDS_USB_CTL_OFFSET);
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regval &= ~PDS_REG_USB_SW_RST_N;
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putreg32(regval, BFLB_PDS_BASE + PDS_USB_CTL_OFFSET);
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/* greater than 5T */
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bflb_mtimer_delay_us(1);
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regval = getreg32(BFLB_PDS_BASE + PDS_USB_CTL_OFFSET);
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regval |= PDS_REG_USB_EXT_SUSP_N;
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putreg32(regval, BFLB_PDS_BASE + PDS_USB_CTL_OFFSET);
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/* wait UCLK 1.2ms */
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bflb_mtimer_delay_ms(3);
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regval = getreg32(BFLB_PDS_BASE + PDS_USB_CTL_OFFSET);
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regval |= PDS_REG_USB_SW_RST_N;
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putreg32(regval, BFLB_PDS_BASE + PDS_USB_CTL_OFFSET);
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bflb_mtimer_delay_ms(2);
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regval = getreg32(BFLB_PDS_BASE + PDS_USB_CTL_OFFSET);
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#ifdef CONFIG_COMPONENT_MAILBOX_USB_HOST
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LOG_I("USB Initialized in HOST mode\r\n");
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regval &= ~PDS_REG_USB_IDDIG;
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#else
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LOG_I("USB Initialized in DEVICE mode\r\n");
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regval |= PDS_REG_USB_IDDIG;
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#endif
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putreg32(regval, BFLB_PDS_BASE + PDS_USB_CTL_OFFSET);
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bflb_mtimer_delay_ms(10);
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return OBLFR_OK;
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}
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