1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * arch/arm/mach-ep93xx/simone.c
4 * Simplemachines Sim.One support.
5 *
6 * Copyright (C) 2010 Ryan Mallon
7 *
8 * Based on the 2.6.24.7 support:
9 *   Copyright (C) 2009 Simplemachines
10 *   MMC support by Peter Ivanov <ivanovp@gmail.com>, 2007
11 */
12
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/platform_device.h>
16#include <linux/i2c.h>
17#include <linux/mmc/host.h>
18#include <linux/spi/spi.h>
19#include <linux/spi/mmc_spi.h>
20#include <linux/platform_data/video-ep93xx.h>
21#include <linux/platform_data/spi-ep93xx.h>
22#include <linux/gpio.h>
23#include <linux/gpio/machine.h>
24
25#include "hardware.h"
26#include "gpio-ep93xx.h"
27
28#include <asm/mach-types.h>
29#include <asm/mach/arch.h>
30
31#include "soc.h"
32
33static struct ep93xx_eth_data __initdata simone_eth_data = {
34	.phy_id		= 1,
35};
36
37static struct ep93xxfb_mach_info __initdata simone_fb_info = {
38	.flags		= EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
39};
40
41static struct mmc_spi_platform_data simone_mmc_spi_data = {
42	.detect_delay	= 500,
43	.ocr_mask	= MMC_VDD_32_33 | MMC_VDD_33_34,
44};
45
46static struct gpiod_lookup_table simone_mmc_spi_gpio_table = {
47	.dev_id = "mmc_spi.0", /* "mmc_spi" @ CS0 */
48	.table = {
49		/* Card detect */
50		GPIO_LOOKUP_IDX("A", 0, NULL, 0, GPIO_ACTIVE_LOW),
51		{ },
52	},
53};
54
55static struct spi_board_info simone_spi_devices[] __initdata = {
56	{
57		.modalias		= "mmc_spi",
58		.platform_data		= &simone_mmc_spi_data,
59		/*
60		 * We use 10 MHz even though the maximum is 3.7 MHz. The driver
61		 * will limit it automatically to max. frequency.
62		 */
63		.max_speed_hz		= 10 * 1000 * 1000,
64		.bus_num		= 0,
65		.chip_select		= 0,
66		.mode			= SPI_MODE_3,
67	},
68};
69
70/*
71 * Up to v1.3, the Sim.One used SFRMOUT as SD card chip select, but this goes
72 * low between multi-message command blocks. From v1.4, it uses a GPIO instead.
73 * v1.3 parts will still work, since the signal on SFRMOUT is automatic.
74 */
75static struct gpiod_lookup_table simone_spi_cs_gpio_table = {
76	.dev_id = "spi0",
77	.table = {
78		GPIO_LOOKUP("A", 1, "cs", GPIO_ACTIVE_LOW),
79		{ },
80	},
81};
82
83static struct ep93xx_spi_info simone_spi_info __initdata = {
84	.use_dma = 1,
85};
86
87static struct i2c_board_info __initdata simone_i2c_board_info[] = {
88	{
89		I2C_BOARD_INFO("ds1337", 0x68),
90	},
91};
92
93static struct platform_device simone_audio_device = {
94	.name		= "simone-audio",
95	.id		= -1,
96};
97
98static void __init simone_register_audio(void)
99{
100	ep93xx_register_ac97();
101	platform_device_register(&simone_audio_device);
102}
103
104static void __init simone_init_machine(void)
105{
106	ep93xx_init_devices();
107	ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_8M);
108	ep93xx_register_eth(&simone_eth_data, 1);
109	ep93xx_register_fb(&simone_fb_info);
110	ep93xx_register_i2c(simone_i2c_board_info,
111			    ARRAY_SIZE(simone_i2c_board_info));
112	gpiod_add_lookup_table(&simone_mmc_spi_gpio_table);
113	gpiod_add_lookup_table(&simone_spi_cs_gpio_table);
114	ep93xx_register_spi(&simone_spi_info, simone_spi_devices,
115			    ARRAY_SIZE(simone_spi_devices));
116	simone_register_audio();
117}
118
119MACHINE_START(SIM_ONE, "Simplemachines Sim.One Board")
120	/* Maintainer: Ryan Mallon */
121	.atag_offset	= 0x100,
122	.map_io		= ep93xx_map_io,
123	.init_irq	= ep93xx_init_irq,
124	.init_time	= ep93xx_timer_init,
125	.init_machine	= simone_init_machine,
126	.init_late	= ep93xx_init_late,
127	.restart	= ep93xx_restart,
128MACHINE_END
129