1/*
 2 *  Setup code for SAMA5 Evaluation Kits with Device Tree support
 3 *
 4 *  Copyright (C) 2013 Atmel,
 5 *                2013 Ludovic Desroches <ludovic.desroches@atmel.com>
 6 *
 7 * Licensed under GPLv2 or later.
 8 */
 9
10#include <linux/types.h>
11#include <linux/init.h>
12#include <linux/module.h>
13#include <linux/gpio.h>
14#include <linux/micrel_phy.h>
15#include <linux/of.h>
16#include <linux/of_irq.h>
17#include <linux/of_platform.h>
18#include <linux/phy.h>
19#include <linux/clk-provider.h>
20
21#include <asm/setup.h>
22#include <asm/irq.h>
23#include <asm/mach/arch.h>
24#include <asm/mach/map.h>
25#include <asm/mach/irq.h>
26
27#include "at91_aic.h"
28#include "generic.h"
29
30static void __init sama5_dt_timer_init(void)
31{
32#if defined(CONFIG_COMMON_CLK)
33	of_clk_init(NULL);
34#endif
35	at91sam926x_pit_init();
36}
37
38static const struct of_device_id irq_of_match[] __initconst = {
39
40	{ .compatible = "atmel,sama5d3-aic", .data = at91_aic5_of_init },
41	{ /*sentinel*/ }
42};
43
44static void __init at91_dt_init_irq(void)
45{
46	of_irq_init(irq_of_match);
47}
48
49static int ksz9021rn_phy_fixup(struct phy_device *phy)
50{
51	int value;
52
53	/* Set delay values */
54	value = MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW | 0x8000;
55	phy_write(phy, MICREL_KSZ9021_EXTREG_CTRL, value);
56	value = 0xF2F4;
57	phy_write(phy, MICREL_KSZ9021_EXTREG_DATA_WRITE, value);
58	value = MICREL_KSZ9021_RGMII_RX_DATA_PAD_SCEW | 0x8000;
59	phy_write(phy, MICREL_KSZ9021_EXTREG_CTRL, value);
60	value = 0x2222;
61	phy_write(phy, MICREL_KSZ9021_EXTREG_DATA_WRITE, value);
62
63	return 0;
64}
65
66static void __init sama5_dt_device_init(void)
67{
68	if (of_machine_is_compatible("atmel,sama5d3xcm") &&
69	    IS_ENABLED(CONFIG_PHYLIB))
70		phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
71			ksz9021rn_phy_fixup);
72
73	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
74}
75
76static const char *sama5_dt_board_compat[] __initdata = {
77	"atmel,sama5",
78	NULL
79};
80
81DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
82	/* Maintainer: Atmel */
83	.init_time	= sama5_dt_timer_init,
84	.map_io		= at91_map_io,
85	.handle_irq	= at91_aic5_handle_irq,
86	.init_early	= at91_dt_initialize,
87	.init_irq	= at91_dt_init_irq,
88	.init_machine	= sama5_dt_device_init,
89	.dt_compat	= sama5_dt_board_compat,
90MACHINE_END