xref: /openbmc/linux/arch/arm/mach-imx/mach-vf610.c (revision d2199b34)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright 2012-2013 Freescale Semiconductor, Inc.
4  */
5 
6 #include <linux/of_address.h>
7 #include <linux/of_platform.h>
8 #include <linux/io.h>
9 
10 #include <linux/irqchip.h>
11 #include <asm/mach/arch.h>
12 #include <asm/hardware/cache-l2x0.h>
13 
14 #include "common.h"
15 #include "hardware.h"
16 
17 #define MSCM_CPxCOUNT		0x00c
18 #define MSCM_CPxCFG1		0x014
19 
vf610_detect_cpu(void)20 static void __init vf610_detect_cpu(void)
21 {
22 	struct device_node *np;
23 	u32 cpxcount, cpxcfg1;
24 	unsigned int cpu_type;
25 	void __iomem *mscm;
26 
27 	np = of_find_compatible_node(NULL, NULL, "fsl,vf610-mscm-cpucfg");
28 	if (WARN_ON(!np))
29 		return;
30 
31 	mscm = of_iomap(np, 0);
32 	of_node_put(np);
33 
34 	if (WARN_ON(!mscm))
35 		return;
36 
37 	cpxcount = readl_relaxed(mscm + MSCM_CPxCOUNT);
38 	cpxcfg1  = readl_relaxed(mscm + MSCM_CPxCFG1);
39 
40 	iounmap(mscm);
41 
42 	cpu_type = cpxcount ? MXC_CPU_VF600 : MXC_CPU_VF500;
43 
44 	if (cpxcfg1)
45 		cpu_type |= MXC_CPU_VFx10;
46 
47 	mxc_set_cpu_type(cpu_type);
48 }
49 
vf610_init_machine(void)50 static void __init vf610_init_machine(void)
51 {
52 	vf610_detect_cpu();
53 
54 	of_platform_default_populate(NULL, NULL, NULL);
55 }
56 
57 static const char * const vf610_dt_compat[] __initconst = {
58 	"fsl,vf500",
59 	"fsl,vf510",
60 	"fsl,vf600",
61 	"fsl,vf610",
62 	"fsl,vf610m4",
63 	NULL,
64 };
65 
66 DT_MACHINE_START(VYBRID_VF610, "Freescale Vybrid VF5xx/VF6xx (Device Tree)")
67 	.l2c_aux_val	= 0,
68 	.l2c_aux_mask	= ~0,
69 	.init_machine   = vf610_init_machine,
70 	.dt_compat	= vf610_dt_compat,
71 MACHINE_END
72