1  // SPDX-License-Identifier: GPL-2.0-only
2  /*
3   * AM43xx Power domains framework
4   *
5   * Copyright (C) 2013 Texas Instruments, Inc.
6   */
7  
8  #include <linux/kernel.h>
9  #include <linux/init.h>
10  
11  #include "powerdomain.h"
12  
13  #include "prcm-common.h"
14  #include "prcm44xx.h"
15  #include "prcm43xx.h"
16  
17  static struct powerdomain gfx_43xx_pwrdm = {
18  	.name		  = "gfx_pwrdm",
19  	.voltdm		  = { .name = "core" },
20  	.prcm_offs	  = AM43XX_PRM_GFX_INST,
21  	.prcm_partition	  = AM43XX_PRM_PARTITION,
22  	.pwrsts		  = PWRSTS_OFF_ON,
23  	.banks		  = 1,
24  	.pwrsts_mem_on	= {
25  		[0] = PWRSTS_ON,	/* gfx_mem */
26  	},
27  	.flags		  = PWRDM_HAS_LOWPOWERSTATECHANGE,
28  };
29  
30  static struct powerdomain mpu_43xx_pwrdm = {
31  	.name		  = "mpu_pwrdm",
32  	.voltdm		  = { .name = "mpu" },
33  	.prcm_offs	  = AM43XX_PRM_MPU_INST,
34  	.prcm_partition	  = AM43XX_PRM_PARTITION,
35  	.pwrsts		  = PWRSTS_OFF_RET_ON,
36  	.pwrsts_logic_ret = PWRSTS_OFF_RET,
37  	.banks		  = 3,
38  	.pwrsts_mem_ret	= {
39  		[0] = PWRSTS_OFF_RET,	/* mpu_l1 */
40  		[1] = PWRSTS_OFF_RET,	/* mpu_l2 */
41  		[2] = PWRSTS_OFF_RET,	/* mpu_ram */
42  	},
43  	.pwrsts_mem_on	= {
44  		[0] = PWRSTS_ON,	/* mpu_l1 */
45  		[1] = PWRSTS_ON,	/* mpu_l2 */
46  		[2] = PWRSTS_ON,	/* mpu_ram */
47  	},
48  	.flags		  = PWRDM_HAS_LOWPOWERSTATECHANGE,
49  };
50  
51  static struct powerdomain rtc_43xx_pwrdm = {
52  	.name		  = "rtc_pwrdm",
53  	.voltdm		  = { .name = "rtc" },
54  	.prcm_offs	  = AM43XX_PRM_RTC_INST,
55  	.prcm_partition	  = AM43XX_PRM_PARTITION,
56  	.pwrsts		  = PWRSTS_ON,
57  };
58  
59  static struct powerdomain wkup_43xx_pwrdm = {
60  	.name		  = "wkup_pwrdm",
61  	.voltdm		  = { .name = "core" },
62  	.prcm_offs	  = AM43XX_PRM_WKUP_INST,
63  	.prcm_partition	  = AM43XX_PRM_PARTITION,
64  	.pwrsts		  = PWRSTS_ON,
65  	.banks		  = 1,
66  	.pwrsts_mem_on	= {
67  		[0] = PWRSTS_ON,	/* debugss_mem */
68  	},
69  };
70  
71  static struct powerdomain tamper_43xx_pwrdm = {
72  	.name		  = "tamper_pwrdm",
73  	.voltdm		  = { .name = "tamper" },
74  	.prcm_offs	  = AM43XX_PRM_TAMPER_INST,
75  	.prcm_partition	  = AM43XX_PRM_PARTITION,
76  	.pwrsts		  = PWRSTS_ON,
77  };
78  
79  static struct powerdomain cefuse_43xx_pwrdm = {
80  	.name		  = "cefuse_pwrdm",
81  	.voltdm		  = { .name = "core" },
82  	.prcm_offs	  = AM43XX_PRM_CEFUSE_INST,
83  	.prcm_partition	  = AM43XX_PRM_PARTITION,
84  	.pwrsts		  = PWRSTS_OFF_ON,
85  	.flags		  = PWRDM_HAS_LOWPOWERSTATECHANGE,
86  };
87  
88  static struct powerdomain per_43xx_pwrdm = {
89  	.name		  = "per_pwrdm",
90  	.voltdm		  = { .name = "core" },
91  	.prcm_offs	  = AM43XX_PRM_PER_INST,
92  	.prcm_partition	  = AM43XX_PRM_PARTITION,
93  	.pwrsts		  = PWRSTS_OFF_RET_ON,
94  	.pwrsts_logic_ret = PWRSTS_OFF_RET,
95  	.banks		  = 4,
96  	.pwrsts_mem_ret	= {
97  		[0] = PWRSTS_OFF_RET,	/* icss_mem */
98  		[1] = PWRSTS_OFF_RET,	/* per_mem */
99  		[2] = PWRSTS_OFF_RET,	/* ram1_mem */
100  		[3] = PWRSTS_OFF_RET,	/* ram2_mem */
101  	},
102  	.pwrsts_mem_on	= {
103  		[0] = PWRSTS_ON,	/* icss_mem */
104  		[1] = PWRSTS_ON,	/* per_mem */
105  		[2] = PWRSTS_ON,	/* ram1_mem */
106  		[3] = PWRSTS_ON,	/* ram2_mem */
107  	},
108  	.flags		  = PWRDM_HAS_LOWPOWERSTATECHANGE,
109  };
110  
111  static struct powerdomain *powerdomains_am43xx[] __initdata = {
112  	&gfx_43xx_pwrdm,
113  	&mpu_43xx_pwrdm,
114  	&rtc_43xx_pwrdm,
115  	&wkup_43xx_pwrdm,
116  	&tamper_43xx_pwrdm,
117  	&cefuse_43xx_pwrdm,
118  	&per_43xx_pwrdm,
119  	NULL
120  };
121  
am43xx_check_vcvp(void)122  static int am43xx_check_vcvp(void)
123  {
124  	return 0;
125  }
126  
am43xx_powerdomains_init(void)127  void __init am43xx_powerdomains_init(void)
128  {
129  	omap4_pwrdm_operations.pwrdm_has_voltdm = am43xx_check_vcvp;
130  	pwrdm_register_platform_funcs(&omap4_pwrdm_operations);
131  	pwrdm_register_pwrdms(powerdomains_am43xx);
132  	pwrdm_complete_init();
133  }
134