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ARM: mxs: Initial support for Ka-Ro TX28
Based on code created by Lothar Waßmann, Sascha Hauer, Wolfram Sang and me. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Lothar Waßmann
Sascha Hauer
parent
ccb24d50b7
commit
1cb59f9f79
@ -39,4 +39,16 @@ config MACH_MX28EVK
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Include support for MX28EVK platform. This includes specific
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configurations for the board and its peripherals.
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config MODULE_TX28
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bool
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select SOC_IMX28
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select MXS_HAVE_AMBA_DUART
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select MXS_HAVE_PLATFORM_AUART
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select MXS_HAVE_PLATFORM_FEC
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select MXS_HAVE_PLATFORM_MXS_PWM
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config MACH_TX28
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bool "Ka-Ro TX28 module"
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select MODULE_TX28
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endif
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@ -9,5 +9,7 @@ obj-$(CONFIG_SOC_IMX28) += clock-mx28.o mm-mx28.o
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obj-$(CONFIG_MACH_MX23EVK) += mach-mx23evk.o
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obj-$(CONFIG_MACH_MX28EVK) += mach-mx28evk.o
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obj-$(CONFIG_MODULE_TX28) += module-tx28.o
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obj-$(CONFIG_MACH_TX28) += mach-tx28.o
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obj-y += devices/
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@ -28,8 +28,13 @@
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/*
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* MXS CPU types
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*/
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#define cpu_is_mx23() (machine_is_mx23evk())
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#define cpu_is_mx28() (machine_is_mx28evk())
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#define cpu_is_mx23() ( \
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machine_is_mx23evk() || \
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0)
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#define cpu_is_mx28() ( \
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machine_is_mx28evk() || \
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machine_is_tx28() || \
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0)
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/*
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* IO addresses common to MXS-based
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@ -63,6 +63,7 @@ static inline void __arch_decomp_setup(unsigned long arch_id)
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mxs_duart_base = MX23_DUART_BASE_ADDR;
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break;
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case MACH_TYPE_MX28EVK:
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case MACH_TYPE_TX28:
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mxs_duart_base = MX28_DUART_BASE_ADDR;
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break;
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default:
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173
arch/arm/mach-mxs/mach-tx28.c
Normal file
173
arch/arm/mach-mxs/mach-tx28.c
Normal file
@ -0,0 +1,173 @@
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/*
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* Copyright (C) 2010 <LW@KARO-electronics.de>
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*
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* based on: mach-mx28_evk.c
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* Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation
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*/
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#include <linux/kernel.h>
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#include <linux/gpio.h>
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#include <linux/leds.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/spi_gpio.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <mach/common.h>
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#include <mach/iomux-mx28.h>
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#include "devices-mx28.h"
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#include "module-tx28.h"
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#define TX28_STK5_GPIO_LED MXS_GPIO_NR(4, 10)
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static const iomux_cfg_t tx28_stk5v3_pads[] __initconst = {
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/* LED */
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MX28_PAD_ENET0_RXD3__GPIO_4_10 |
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MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL,
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/* framebuffer */
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#define LCD_MODE (MXS_PAD_3V3 | MXS_PAD_4MA)
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MX28_PAD_LCD_D00__LCD_D0 | LCD_MODE,
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MX28_PAD_LCD_D01__LCD_D1 | LCD_MODE,
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MX28_PAD_LCD_D02__LCD_D2 | LCD_MODE,
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MX28_PAD_LCD_D03__LCD_D3 | LCD_MODE,
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MX28_PAD_LCD_D04__LCD_D4 | LCD_MODE,
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MX28_PAD_LCD_D05__LCD_D5 | LCD_MODE,
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MX28_PAD_LCD_D06__LCD_D6 | LCD_MODE,
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MX28_PAD_LCD_D07__LCD_D7 | LCD_MODE,
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MX28_PAD_LCD_D08__LCD_D8 | LCD_MODE,
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MX28_PAD_LCD_D09__LCD_D9 | LCD_MODE,
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MX28_PAD_LCD_D10__LCD_D10 | LCD_MODE,
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MX28_PAD_LCD_D11__LCD_D11 | LCD_MODE,
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MX28_PAD_LCD_D12__LCD_D12 | LCD_MODE,
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MX28_PAD_LCD_D13__LCD_D13 | LCD_MODE,
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MX28_PAD_LCD_D14__LCD_D14 | LCD_MODE,
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MX28_PAD_LCD_D15__LCD_D15 | LCD_MODE,
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MX28_PAD_LCD_D16__LCD_D16 | LCD_MODE,
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MX28_PAD_LCD_D17__LCD_D17 | LCD_MODE,
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MX28_PAD_LCD_D18__LCD_D18 | LCD_MODE,
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MX28_PAD_LCD_D19__LCD_D19 | LCD_MODE,
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MX28_PAD_LCD_D20__LCD_D20 | LCD_MODE,
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MX28_PAD_LCD_D21__LCD_D21 | LCD_MODE,
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MX28_PAD_LCD_D22__LCD_D22 | LCD_MODE,
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MX28_PAD_LCD_D23__LCD_D23 | LCD_MODE,
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MX28_PAD_LCD_RD_E__LCD_VSYNC | LCD_MODE,
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MX28_PAD_LCD_WR_RWN__LCD_HSYNC | LCD_MODE,
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MX28_PAD_LCD_RS__LCD_DOTCLK | LCD_MODE,
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MX28_PAD_LCD_CS__LCD_CS | LCD_MODE,
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MX28_PAD_LCD_VSYNC__LCD_VSYNC | LCD_MODE,
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MX28_PAD_LCD_HSYNC__LCD_HSYNC | LCD_MODE,
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MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | LCD_MODE,
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MX28_PAD_LCD_ENABLE__GPIO_1_31 | LCD_MODE,
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MX28_PAD_LCD_RESET__GPIO_3_30 | LCD_MODE,
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MX28_PAD_PWM0__PWM_0 | LCD_MODE,
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/* UART1 */
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MX28_PAD_AUART0_CTS__DUART_RX,
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MX28_PAD_AUART0_RTS__DUART_TX,
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MX28_PAD_AUART0_TX__DUART_RTS,
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MX28_PAD_AUART0_RX__DUART_CTS,
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/* UART2 */
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MX28_PAD_AUART1_RX__AUART1_RX,
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MX28_PAD_AUART1_TX__AUART1_TX,
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MX28_PAD_AUART1_RTS__AUART1_RTS,
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MX28_PAD_AUART1_CTS__AUART1_CTS,
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/* CAN */
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MX28_PAD_GPMI_RDY2__CAN0_TX,
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MX28_PAD_GPMI_RDY3__CAN0_RX,
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/* I2C */
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MX28_PAD_I2C0_SCL__I2C0_SCL,
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MX28_PAD_I2C0_SDA__I2C0_SDA,
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/* TSC2007 */
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MX28_PAD_SAIF0_MCLK__GPIO_3_20 | MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP,
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/* MMC0 */
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MX28_PAD_SSP0_DATA0__SSP0_D0 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA1__SSP0_D1 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA2__SSP0_D2 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA3__SSP0_D3 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA4__SSP0_D4 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA5__SSP0_D5 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA6__SSP0_D6 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA7__SSP0_D7 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_CMD__SSP0_CMD |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
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MX28_PAD_SSP0_SCK__SSP0_SCK |
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(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
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};
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static struct gpio_led tx28_stk5v3_leds[] = {
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{
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.name = "GPIO-LED",
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.default_trigger = "heartbeat",
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.gpio = TX28_STK5_GPIO_LED,
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},
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};
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static const struct gpio_led_platform_data tx28_stk5v3_led_data __initconst = {
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.leds = tx28_stk5v3_leds,
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.num_leds = ARRAY_SIZE(tx28_stk5v3_leds),
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};
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static struct spi_board_info tx28_spi_board_info[] = {
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{
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.modalias = "spidev",
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.max_speed_hz = 20000000,
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.bus_num = 0,
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.chip_select = 1,
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.controller_data = (void *)SPI_GPIO_NO_CHIPSELECT,
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.mode = SPI_MODE_0,
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},
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};
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static void __init tx28_stk5v3_init(void)
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{
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mxs_iomux_setup_multiple_pads(tx28_stk5v3_pads,
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ARRAY_SIZE(tx28_stk5v3_pads));
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mx28_add_duart(); /* UART1 */
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mx28_add_auart(1); /* UART2 */
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tx28_add_fec0();
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/* spi via ssp will be added when available */
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spi_register_board_info(tx28_spi_board_info,
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ARRAY_SIZE(tx28_spi_board_info));
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mxs_add_platform_device("leds-gpio", 0, NULL, 0,
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&tx28_stk5v3_led_data, sizeof(tx28_stk5v3_led_data));
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}
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static void __init tx28_timer_init(void)
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{
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mx28_clocks_init();
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}
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static struct sys_timer tx28_timer = {
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.init = tx28_timer_init,
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};
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MACHINE_START(TX28, "Ka-Ro electronics TX28 module")
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.map_io = mx28_map_io,
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.init_irq = mx28_init_irq,
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.init_machine = tx28_stk5v3_init,
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.timer = &tx28_timer,
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MACHINE_END
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131
arch/arm/mach-mxs/module-tx28.c
Normal file
131
arch/arm/mach-mxs/module-tx28.c
Normal file
@ -0,0 +1,131 @@
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/*
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* Copyright (C) 2010 <LW@KARO-electronics.de>
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License version 2 as published by the
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* Free Software Foundation.
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*/
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#include <linux/delay.h>
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#include <linux/fec.h>
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#include <linux/gpio.h>
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#include <mach/iomux-mx28.h>
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#include "../devices-mx28.h"
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#include "module-tx28.h"
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#define TX28_FEC_PHY_POWER MXS_GPIO_NR(3, 29)
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#define TX28_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
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static const iomux_cfg_t tx28_fec_gpio_pads[] __initconst = {
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/* PHY POWER */
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MX28_PAD_PWM4__GPIO_3_29 |
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MXS_PAD_4MA | MXS_PAD_NOPULL | MXS_PAD_3V3,
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/* PHY RESET */
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MX28_PAD_ENET0_RX_CLK__GPIO_4_13 |
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MXS_PAD_4MA | MXS_PAD_NOPULL | MXS_PAD_3V3,
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/* Mode strap pins 0-2 */
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MX28_PAD_ENET0_RXD0__GPIO_4_3 |
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MXS_PAD_8MA | MXS_PAD_PULLUP | MXS_PAD_3V3,
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MX28_PAD_ENET0_RXD1__GPIO_4_4 |
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MXS_PAD_8MA | MXS_PAD_PULLUP | MXS_PAD_3V3,
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MX28_PAD_ENET0_RX_EN__GPIO_4_2 |
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MXS_PAD_8MA | MXS_PAD_PULLUP | MXS_PAD_3V3,
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/* nINT */
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MX28_PAD_ENET0_TX_CLK__GPIO_4_5 |
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MXS_PAD_4MA | MXS_PAD_NOPULL | MXS_PAD_3V3,
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MX28_PAD_ENET0_MDC__GPIO_4_0,
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MX28_PAD_ENET0_MDIO__GPIO_4_1,
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MX28_PAD_ENET0_TX_EN__GPIO_4_6,
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MX28_PAD_ENET0_TXD0__GPIO_4_7,
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MX28_PAD_ENET0_TXD1__GPIO_4_8,
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MX28_PAD_ENET_CLK__GPIO_4_16,
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};
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#define FEC_MODE (MXS_PAD_8MA | MXS_PAD_PULLUP | MXS_PAD_3V3)
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static const iomux_cfg_t tx28_fec_pads[] __initconst = {
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MX28_PAD_ENET0_MDC__ENET0_MDC | FEC_MODE,
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MX28_PAD_ENET0_MDIO__ENET0_MDIO | FEC_MODE,
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MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | FEC_MODE,
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MX28_PAD_ENET0_RXD0__ENET0_RXD0 | FEC_MODE,
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MX28_PAD_ENET0_RXD1__ENET0_RXD1 | FEC_MODE,
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MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | FEC_MODE,
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MX28_PAD_ENET0_TXD0__ENET0_TXD0 | FEC_MODE,
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MX28_PAD_ENET0_TXD1__ENET0_TXD1 | FEC_MODE,
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MX28_PAD_ENET_CLK__CLKCTRL_ENET | FEC_MODE,
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};
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static const struct fec_platform_data tx28_fec_data __initconst = {
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.phy = PHY_INTERFACE_MODE_RMII,
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};
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int __init tx28_add_fec0(void)
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{
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int i, ret;
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pr_debug("%s: Switching FEC PHY power off\n", __func__);
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ret = mxs_iomux_setup_multiple_pads(tx28_fec_gpio_pads,
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ARRAY_SIZE(tx28_fec_gpio_pads));
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for (i = 0; i < ARRAY_SIZE(tx28_fec_gpio_pads); i++) {
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unsigned int gpio = MXS_GPIO_NR(PAD_BANK(tx28_fec_gpio_pads[i]),
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PAD_PIN(tx28_fec_gpio_pads[i]));
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ret = gpio_request(gpio, "FEC");
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if (ret) {
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pr_err("Failed to request GPIO_%d_%d: %d\n",
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PAD_BANK(tx28_fec_gpio_pads[i]),
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PAD_PIN(tx28_fec_gpio_pads[i]), ret);
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goto free_gpios;
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}
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ret = gpio_direction_output(gpio, 0);
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if (ret) {
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pr_err("Failed to set direction of GPIO_%d_%d to output: %d\n",
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gpio / 32 + 1, gpio % 32, ret);
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goto free_gpios;
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}
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}
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/* Power up fec phy */
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pr_debug("%s: Switching FEC PHY power on\n", __func__);
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ret = gpio_direction_output(TX28_FEC_PHY_POWER, 1);
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if (ret) {
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pr_err("Failed to power on PHY: %d\n", ret);
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goto free_gpios;
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}
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mdelay(26); /* 25ms according to data sheet */
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/* nINT */
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gpio_direction_input(MXS_GPIO_NR(4, 5));
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/* Mode strap pins */
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gpio_direction_output(MXS_GPIO_NR(4, 2), 1);
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gpio_direction_output(MXS_GPIO_NR(4, 3), 1);
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gpio_direction_output(MXS_GPIO_NR(4, 4), 1);
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udelay(100); /* minimum assertion time for nRST */
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pr_debug("%s: Deasserting FEC PHY RESET\n", __func__);
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gpio_set_value(TX28_FEC_PHY_RESET, 1);
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ret = mxs_iomux_setup_multiple_pads(tx28_fec_pads,
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ARRAY_SIZE(tx28_fec_pads));
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if (ret) {
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pr_debug("%s: mxs_iomux_setup_multiple_pads() failed with rc: %d\n",
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__func__, ret);
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goto free_gpios;
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}
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pr_debug("%s: Registering FEC device\n", __func__);
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mx28_add_fec(0, &tx28_fec_data);
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return 0;
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free_gpios:
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while (--i >= 0) {
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unsigned int gpio = MXS_GPIO_NR(PAD_BANK(tx28_fec_gpio_pads[i]),
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PAD_PIN(tx28_fec_gpio_pads[i]));
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gpio_free(gpio);
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}
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return ret;
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}
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9
arch/arm/mach-mxs/module-tx28.h
Normal file
9
arch/arm/mach-mxs/module-tx28.h
Normal file
@ -0,0 +1,9 @@
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/*
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* Copyright (C) 2010 Pengutronix
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* Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or modify it under
|
||||
* the terms of the GNU General Public License version 2 as published by the
|
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* Free Software Foundation.
|
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*/
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int __init tx28_add_fec0(void);
|
||||
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