btashton commented on a change in pull request #2463: URL: https://github.com/apache/incubator-nuttx/pull/2463#discussion_r536268491
########## File path: boards/arm/imxrt/teensy-4.x/include/board.h ########## @@ -0,0 +1,311 @@ +/**************************************************************************** + * boards/arm/imxrt/teensy-4.x/include/board.h + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +#ifndef __BOARDS_ARM_IMXRT_TEENSY_4_INCLUDE_BOARD_H +#define __BOARDS_ARM_IMXRT_TEENSY_4_INCLUDE_BOARD_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +/* Do not include i.MXRT header files here. */ + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* Clocking *****************************************************************/ + +/* Set VDD_SOC to 1.25V */ + +#define IMXRT_VDD_SOC (0x12) + +/* Set Arm PLL (PLL1) to fOut = (24Mhz * ARM_PLL_DIV_SELECT/2) / + * ARM_PODF_DIVISOR + * 600Mhz = (24Mhz * ARM_PLL_DIV_SELECT/2) / + * ARM_PODF_DIVISOR + * ARM_PLL_DIV_SELECT = 100 + * ARM_PODF_DIVISOR = 2 + * 600Mhz = (24Mhz * 100/2) / 2 + * + * AHB_CLOCK_ROOT = PLL1fOut / IMXRT_AHB_PODF_DIVIDER + * 1Hz to 600 MHz = 600Mhz / IMXRT_ARM_CLOCK_DIVIDER + * IMXRT_ARM_CLOCK_DIVIDER = 1 + * 600Mhz = 600Mhz / 1 + * + * PRE_PERIPH_CLK_SEL = PRE_PERIPH_CLK_SEL_PLL1 + * PERIPH_CLK_SEL = 1 (0 select PERIPH_CLK2_PODF, + * 1 select PRE_PERIPH_CLK_SEL_PLL1) + * PERIPH_CLK = 600Mhz + * + * IPG_CLOCK_ROOT = AHB_CLOCK_ROOT / IMXRT_IPG_PODF_DIVIDER + * IMXRT_IPG_PODF_DIVIDER = 4 + * 150Mhz = 600Mhz / 4 + * + * PRECLK_CLOCK_ROOT = IPG_CLOCK_ROOT / + * IMXRT_PERCLK_PODF_DIVIDER + * IMXRT_PERCLK_PODF_DIVIDER = 9 + * 16.6Mhz = 150Mhz / 9 + * + * SEMC_CLK_ROOT = 600Mhz / IMXRT_SEMC_PODF_DIVIDER + * (labeled AIX_PODF in 18.2) + * IMXRT_SEMC_PODF_DIVIDER = 8 + * 75Mhz = 600Mhz / 8 + * + * Set Sys PLL (PLL2) to fOut = (24Mhz * (20+(2*(DIV_SELECT))) + * 528Mhz = (24Mhz * (20+(2*(1))) + * + * Set USB1 PLL (PLL3) to fOut = (24Mhz * 20) + * 480Mhz = (24Mhz * 20) + * + * Set LPSPI PLL3 PFD0 to fOut = (480Mhz / 12 * 18) + * 720Mhz = (480Mhz / 12 * 18) + * 90Mhz = (720Mhz / LSPI_PODF_DIVIDER) + * + * Set LPI2C PLL3 / 8 to fOut = (480Mhz / 8) + * 60Mhz = (480Mhz / 8) + * 12Mhz = (60Mhz / LSPI_PODF_DIVIDER) + * + * These clock frequencies can be verified via the CCM_CLKO1 pin and sending + * the appropriate clock to it with something like; + * + * putreg32( <Clk number> | CCM_CCOSR_CLKO1_EN , IMXRT_CCM_CCOSR); + * imxrt_config_gpio(GPIO_CCM_CLKO1); + */ + +#define BOARD_XTAL_FREQUENCY 24000000 +#define IMXRT_PRE_PERIPH_CLK_SEL CCM_CBCMR_PRE_PERIPH_CLK_SEL_PLL1 +#define IMXRT_PERIPH_CLK_SEL CCM_CBCDR_PERIPH_CLK_SEL_PRE_PERIPH +#define IMXRT_ARM_PLL_DIV_SELECT 100 +#define IMXRT_ARM_PODF_DIVIDER 2 +#define IMXRT_AHB_PODF_DIVIDER 1 +#define IMXRT_IPG_PODF_DIVIDER 4 +#define IMXRT_PERCLK_CLK_SEL CCM_CSCMR1_PERCLK_CLK_SEL_IPG_CLK_ROOT +#define IMXRT_PERCLK_PODF_DIVIDER 9 +#define IMXRT_SEMC_PODF_DIVIDER 8 + +#define IMXRT_LPSPI_CLK_SELECT CCM_CBCMR_LPSPI_CLK_SEL_PLL3_PFD0 +#define IMXRT_LSPI_PODF_DIVIDER 8 + +#define IMXRT_LPI2C_CLK_SELECT CCM_CSCDR2_LPI2C_CLK_SEL_PLL3_60M +#define IMXRT_LSI2C_PODF_DIVIDER 5 + +#define IMXRT_CAN_CLK_SELECT CCM_CSCMR2_CAN_CLK_SEL_PLL3_SW_80 +#define IMXRT_CAN_PODF_DIVIDER 1 + +#define IMXRT_SYS_PLL_SELECT CCM_ANALOG_PLL_SYS_DIV_SELECT_22 + +#define IMXRT_USB1_PLL_DIV_SELECT CCM_ANALOG_PLL_USB1_DIV_SELECT_20 + +#define BOARD_CPU_FREQUENCY \ + (BOARD_XTAL_FREQUENCY * (IMXRT_ARM_PLL_DIV_SELECT / 2)) / IMXRT_ARM_PODF_DIVIDER + +/* Define this to enable tracing */ + +#if 0 +# define IMXRT_TRACE_PODF_DIVIDER 1 +# define IMXRT_TRACE_CLK_SELECT CCM_CBCMR_TRACE_CLK_SEL_PLL2_PFD0 +#endif + +/* LED definitions **********************************************************/ + +/* There are four LED status indicators located on the EVK Board. + * The functions of these LEDs include: + * + * - Main Power Supply(D3) + * Green: DC 5V main supply is normal. + * Red: J2 input voltage is over 5.6V. + * Off: The board is not powered. + * - Reset RED LED(D15) + * - OpenSDA LED(D16) + * - USER LED(D8) + * + * Only a single LED, D8, is under software control. + */ + +/* LED index values for use with board_userled() */ + +#define BOARD_USERLED 0 +#define BOARD_NLEDS 1 + +/* LED bits for use with board_userled_all() */ + +#define BOARD_USERLED_BIT (1 << BOARD_USERLED) + +/* This LED is not used by the board port unless CONFIG_ARCH_LEDS is + * defined. In that case, the usage by the board port is defined in + * include/board.h and src/imxrt_autoleds.c. The LED is used to encode + * OS-related events as follows: + * + * -------------------- ----------------------------- ------ + * SYMBOL Meaning LED + * -------------------- ----------------------------- ------ + */ + +#define LED_STARTED 0 /* NuttX has been started OFF */ +#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF */ +#define LED_IRQSENABLED 0 /* Interrupts enabled OFF */ +#define LED_STACKCREATED 1 /* Idle stack created ON */ +#define LED_INIRQ 2 /* In an interrupt N/C */ +#define LED_SIGNAL 2 /* In a signal handler N/C */ +#define LED_ASSERTION 2 /* An assertion failed N/C */ +#define LED_PANIC 3 /* The system has crashed FLASH */ +#undef LED_IDLE /* Not used */ + +/* Thus if the LED is statically on, NuttX has successfully booted and is, + * apparently, running normally. If the LED is flashing at approximately + * 2Hz, then a fatal error has been detected and the system has halted. + */ + +/* SDIO *********************************************************************/ + +/* Pin drive characteristics - drive strength in particular may need tuning + * for specific boards, but has been checked by scope on the EVKB to make + * sure shapes are square with minimal ringing. + */ + +#define PIN_USDHC1_D0 (GPIO_USDHC1_DATA0_1 | IOMUX_USDHC1_DATAX_DEFAULT) +#define PIN_USDHC1_D1 (GPIO_USDHC1_DATA1_1 | IOMUX_USDHC1_DATAX_DEFAULT) +#define PIN_USDHC1_D2 (GPIO_USDHC1_DATA3_1 | IOMUX_USDHC1_DATAX_DEFAULT) +#define PIN_USDHC1_D3 (GPIO_USDHC1_DATA2_1 | IOMUX_USDHC1_DATAX_DEFAULT) +#define PIN_USDHC1_DCLK (GPIO_USDHC1_CLK_1 | IOMUX_USDHC1_CLK_DEFAULT) +#define PIN_USDHC1_CMD (GPIO_USDHC1_CMD_1 | IOMUX_USDHC1_CMD_DEFAULT) +#define PIN_USDHC1_CD (PIN_USDHC1_D3) + +/* 386 KHz for initial inquiry stuff */ + +#define BOARD_USDHC_IDMODE_PRESCALER USDHC_SYSCTL_SDCLKFS_DIV256 +#define BOARD_USDHC_IDMODE_DIVISOR USDHC_SYSCTL_DVS_DIV(2) + +/* 24.8MHz for other modes */ + +#define BOARD_USDHC_MMCMODE_PRESCALER USDHC_SYSCTL_SDCLKFS_DIV8 +#define BOARD_USDHC_MMCMODE_DIVISOR USDHC_SYSCTL_DVS_DIV(1) + +#define BOARD_USDHC_SD1MODE_PRESCALER USDHC_SYSCTL_SDCLKFS_DIV8 +#define BOARD_USDHC_SD1MODE_DIVISOR USDHC_SYSCTL_DVS_DIV(1) + +#define BOARD_USDHC_SD4MODE_PRESCALER USDHC_SYSCTL_SDCLKFS_DIV8 +#define BOARD_USDHC_SD4MODE_DIVISOR USDHC_SYSCTL_DVS_DIV(1) + +/* ETH Disambiguation *******************************************************/ + +#define GPIO_ENET_TX_DATA00 (GPIO_ENET_TX_DATA00_1| \ + IOMUX_ENET_DATA_DEFAULT) /* GPIO_B1_07 */ +#define GPIO_ENET_TX_DATA01 (GPIO_ENET_TX_DATA01_1| \ + IOMUX_ENET_DATA_DEFAULT) /* GPIO_B1_08 */ +#define GPIO_ENET_RX_DATA00 (GPIO_ENET_RX_DATA00_1| \ + IOMUX_ENET_DATA_DEFAULT) /* GPIO_B1_04 */ +#define GPIO_ENET_RX_DATA01 (GPIO_ENET_RX_DATA01_1| \ + IOMUX_ENET_DATA_DEFAULT) /* GPIO_B1_05 */ +#define GPIO_ENET_MDIO (GPIO_ENET_MDIO_1|IOMUX_ENET_MDIO_DEFAULT) /* GPIO_B1_15 */ +#define GPIO_ENET_MDC (GPIO_ENET_MDC_1|IOMUX_ENET_MDC_DEFAULT) /* GPIO_B1_14 */ +#define GPIO_ENET_RX_EN (GPIO_ENET_RX_EN_1|IOMUX_ENET_EN_DEFAULT) /* GPIO_B1_06 */ +#define GPIO_ENET_RX_ER (GPIO_ENET_RX_ER_1|IOMUX_ENET_RXERR_DEFAULT) /* GPIO_B1_11 */ +#define GPIO_ENET_TX_CLK (GPIO_ENET_REF_CLK_2|\ + IOMUX_ENET_TX_CLK_DEFAULT) /* GPIO_B1_10 */ +#define GPIO_ENET_TX_EN (GPIO_ENET_TX_EN_1|IOMUX_ENET_EN_DEFAULT) /* GPIO_B1_09 */ + +/* PIO Disambiguation *******************************************************/ + +/* LPUARTs + * + * Virtual console port provided by OpenSDA on UART1 and Review comment: This comment block seems to be for a different board ########## File path: boards/arm/imxrt/teensy-4.x/src/imxrt_autoleds.c ########## @@ -0,0 +1,165 @@ +/**************************************************************************** + * boards/arm/imxrt/teensy-4.x/src/imxrt_autoleds.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/* There are four LED status indicators located on the EVK Board. The Review comment: There is only the single LED on this board. I think this comment block needs to be updated. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
