forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
206 lines
4.0 KiB
206 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* linux/arch/arm/mach-mmp/gplugd.c |
|
* |
|
* Support for the Marvell PXA168-based GuruPlug Display (gplugD) Platform. |
|
*/ |
|
|
|
#include <linux/init.h> |
|
#include <linux/platform_device.h> |
|
#include <linux/gpio.h> |
|
#include <linux/gpio-pxa.h> |
|
|
|
#include <asm/mach/arch.h> |
|
#include <asm/mach-types.h> |
|
|
|
#include "irqs.h" |
|
#include "pxa168.h" |
|
#include "mfp-pxa168.h" |
|
|
|
#include "common.h" |
|
|
|
static unsigned long gplugd_pin_config[] __initdata = { |
|
/* UART3 */ |
|
GPIO8_UART3_TXD, |
|
GPIO9_UART3_RXD, |
|
GPIO1O_UART3_CTS, |
|
GPIO11_UART3_RTS, |
|
|
|
/* USB OTG PEN */ |
|
GPIO18_GPIO, |
|
|
|
/* MMC2 */ |
|
GPIO28_MMC2_CMD, |
|
GPIO29_MMC2_CLK, |
|
GPIO30_MMC2_DAT0, |
|
GPIO31_MMC2_DAT1, |
|
GPIO32_MMC2_DAT2, |
|
GPIO33_MMC2_DAT3, |
|
|
|
/* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */ |
|
GPIO35_GPIO, |
|
GPIO36_GPIO, /* CEC Interrupt */ |
|
|
|
/* MMC1 */ |
|
GPIO43_MMC1_CLK, |
|
GPIO49_MMC1_CMD, |
|
GPIO41_MMC1_DAT0, |
|
GPIO40_MMC1_DAT1, |
|
GPIO52_MMC1_DAT2, |
|
GPIO51_MMC1_DAT3, |
|
GPIO53_MMC1_CD, |
|
|
|
/* LCD */ |
|
GPIO56_LCD_FCLK_RD, |
|
GPIO57_LCD_LCLK_A0, |
|
GPIO58_LCD_PCLK_WR, |
|
GPIO59_LCD_DENA_BIAS, |
|
GPIO60_LCD_DD0, |
|
GPIO61_LCD_DD1, |
|
GPIO62_LCD_DD2, |
|
GPIO63_LCD_DD3, |
|
GPIO64_LCD_DD4, |
|
GPIO65_LCD_DD5, |
|
GPIO66_LCD_DD6, |
|
GPIO67_LCD_DD7, |
|
GPIO68_LCD_DD8, |
|
GPIO69_LCD_DD9, |
|
GPIO70_LCD_DD10, |
|
GPIO71_LCD_DD11, |
|
GPIO72_LCD_DD12, |
|
GPIO73_LCD_DD13, |
|
GPIO74_LCD_DD14, |
|
GPIO75_LCD_DD15, |
|
GPIO76_LCD_DD16, |
|
GPIO77_LCD_DD17, |
|
GPIO78_LCD_DD18, |
|
GPIO79_LCD_DD19, |
|
GPIO80_LCD_DD20, |
|
GPIO81_LCD_DD21, |
|
GPIO82_LCD_DD22, |
|
GPIO83_LCD_DD23, |
|
|
|
/* GPIO */ |
|
GPIO84_GPIO, |
|
GPIO85_GPIO, |
|
|
|
/* Fast-Ethernet*/ |
|
GPIO86_TX_CLK, |
|
GPIO87_TX_EN, |
|
GPIO88_TX_DQ3, |
|
GPIO89_TX_DQ2, |
|
GPIO90_TX_DQ1, |
|
GPIO91_TX_DQ0, |
|
GPIO92_MII_CRS, |
|
GPIO93_MII_COL, |
|
GPIO94_RX_CLK, |
|
GPIO95_RX_ER, |
|
GPIO96_RX_DQ3, |
|
GPIO97_RX_DQ2, |
|
GPIO98_RX_DQ1, |
|
GPIO99_RX_DQ0, |
|
GPIO100_MII_MDC, |
|
GPIO101_MII_MDIO, |
|
GPIO103_RX_DV, |
|
GPIO104_GPIO, /* Reset PHY */ |
|
|
|
/* RTC interrupt */ |
|
GPIO102_GPIO, |
|
|
|
/* I2C */ |
|
GPIO105_CI2C_SDA, |
|
GPIO106_CI2C_SCL, |
|
|
|
/* SPI NOR Flash on SSP2 */ |
|
GPIO107_SSP2_RXD, |
|
GPIO108_SSP2_TXD, |
|
GPIO110_GPIO, /* SPI_CSn */ |
|
GPIO111_SSP2_CLK, |
|
|
|
/* Select JTAG */ |
|
GPIO109_GPIO, |
|
|
|
/* I2S */ |
|
GPIO114_I2S_FRM, |
|
GPIO115_I2S_BCLK, |
|
GPIO116_I2S_TXD |
|
}; |
|
|
|
static struct pxa_gpio_platform_data pxa168_gpio_pdata = { |
|
.irq_base = MMP_GPIO_TO_IRQ(0), |
|
}; |
|
|
|
static struct i2c_board_info gplugd_i2c_board_info[] = { |
|
{ |
|
.type = "isl1208", |
|
.addr = 0x6F, |
|
} |
|
}; |
|
|
|
/* Bring PHY out of reset by setting GPIO 104 */ |
|
static int gplugd_eth_init(void) |
|
{ |
|
if (unlikely(gpio_request(104, "ETH_RESET_N"))) { |
|
printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet " |
|
"PHY out of reset\n"); |
|
return -EIO; |
|
} |
|
|
|
gpio_direction_output(104, 1); |
|
gpio_free(104); |
|
return 0; |
|
} |
|
|
|
struct pxa168_eth_platform_data gplugd_eth_platform_data = { |
|
.port_number = 0, |
|
.phy_addr = 0, |
|
.speed = 0, /* Autonagotiation */ |
|
.intf = PHY_INTERFACE_MODE_RMII, |
|
.init = gplugd_eth_init, |
|
}; |
|
|
|
static void __init select_disp_freq(void) |
|
{ |
|
/* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */ |
|
if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) { |
|
printk(KERN_ERR "Can't get hold of GPIO 35 to select display " |
|
"frequency\n"); |
|
} else { |
|
gpio_direction_output(35, 1); |
|
gpio_free(35); |
|
} |
|
|
|
if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) { |
|
printk(KERN_ERR "Can't get hold of GPIO 85 to select display " |
|
"frequency\n"); |
|
} else { |
|
gpio_direction_output(85, 0); |
|
gpio_free(85); |
|
} |
|
} |
|
|
|
static void __init gplugd_init(void) |
|
{ |
|
mfp_config(ARRAY_AND_SIZE(gplugd_pin_config)); |
|
|
|
select_disp_freq(); |
|
|
|
/* on-chip devices */ |
|
pxa168_add_uart(3); |
|
pxa168_add_ssp(1); |
|
pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info)); |
|
platform_device_add_data(&pxa168_device_gpio, &pxa168_gpio_pdata, |
|
sizeof(struct pxa_gpio_platform_data)); |
|
platform_device_register(&pxa168_device_gpio); |
|
|
|
pxa168_add_eth(&gplugd_eth_platform_data); |
|
} |
|
|
|
MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform") |
|
.map_io = mmp_map_io, |
|
.nr_irqs = MMP_NR_IRQS, |
|
.init_irq = pxa168_init_irq, |
|
.init_time = pxa168_timer_init, |
|
.init_machine = gplugd_init, |
|
.restart = pxa168_restart, |
|
MACHINE_END
|
|
|