xref: /openbmc/linux/arch/arm/mach-imx/mach-imx6sl.c (revision d2199b34)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright 2013 Freescale Semiconductor, Inc.
4  */
5 
6 #include <linux/irqchip.h>
7 #include <linux/of_platform.h>
8 #include <linux/mfd/syscon.h>
9 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
10 #include <linux/regmap.h>
11 #include <asm/mach/arch.h>
12 #include <asm/mach/map.h>
13 
14 #include "common.h"
15 #include "cpuidle.h"
16 #include "hardware.h"
17 
imx6sl_fec_init(void)18 static void __init imx6sl_fec_init(void)
19 {
20 	struct regmap *gpr;
21 
22 	/* set FEC clock from internal PLL clock source */
23 	gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
24 	if (!IS_ERR(gpr)) {
25 		regmap_update_bits(gpr, IOMUXC_GPR1,
26 			IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
27 		regmap_update_bits(gpr, IOMUXC_GPR1,
28 			IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
29 	} else {
30 		pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
31 	}
32 }
33 
imx6sl_init_late(void)34 static void __init imx6sl_init_late(void)
35 {
36 	/* imx6sl reuses imx6q cpufreq driver */
37 	if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
38 		platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
39 
40 	if (IS_ENABLED(CONFIG_SOC_IMX6SL) && cpu_is_imx6sl())
41 		imx6sl_cpuidle_init();
42 	else if (IS_ENABLED(CONFIG_SOC_IMX6SLL))
43 		imx6sx_cpuidle_init();
44 }
45 
imx6sl_init_machine(void)46 static void __init imx6sl_init_machine(void)
47 {
48 	of_platform_default_populate(NULL, NULL, NULL);
49 
50 	if (cpu_is_imx6sl())
51 		imx6sl_fec_init();
52 	imx_anatop_init();
53 	imx6sl_pm_init();
54 }
55 
imx6sl_init_irq(void)56 static void __init imx6sl_init_irq(void)
57 {
58 	imx_gpc_check_dt();
59 	imx_init_revision_from_anatop();
60 	imx_init_l2cache();
61 	imx_src_init();
62 	irqchip_init();
63 	if (cpu_is_imx6sl())
64 		imx6_pm_ccm_init("fsl,imx6sl-ccm");
65 	else
66 		imx6_pm_ccm_init("fsl,imx6sll-ccm");
67 }
68 
69 static const char * const imx6sl_dt_compat[] __initconst = {
70 	"fsl,imx6sl",
71 	"fsl,imx6sll",
72 	NULL,
73 };
74 
75 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
76 	.l2c_aux_val 	= 0,
77 	.l2c_aux_mask	= ~0,
78 	.init_irq	= imx6sl_init_irq,
79 	.init_machine	= imx6sl_init_machine,
80 	.init_late      = imx6sl_init_late,
81 	.dt_compat	= imx6sl_dt_compat,
82 MACHINE_END
83