1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * R-Car Gen4 System Controller
4  *
5  * Copyright (C) 2021 Renesas Electronics Corp.
6  */
7 #ifndef __SOC_RENESAS_RCAR_GEN4_SYSC_H__
8 #define __SOC_RENESAS_RCAR_GEN4_SYSC_H__
9 
10 #include <linux/types.h>
11 
12 /*
13  * Power Domain flags
14  */
15 #define PD_CPU		BIT(0)	/* Area contains main CPU core */
16 #define PD_SCU		BIT(1)	/* Area contains SCU and L2 cache */
17 #define PD_NO_CR	BIT(2)	/* Area lacks PWR{ON,OFF}CR registers */
18 
19 #define PD_CPU_NOCR	(PD_CPU | PD_NO_CR) /* CPU area lacks CR */
20 #define PD_ALWAYS_ON	PD_NO_CR	  /* Always-on area */
21 
22 /*
23  * Description of a Power Area
24  */
25 struct rcar_gen4_sysc_area {
26 	const char *name;
27 	u8 pdr;			/* PDRn */
28 	s8 parent;		/* -1 if none */
29 	u8 flags;		/* See PD_* */
30 };
31 
32 /*
33  * SoC-specific Power Area Description
34  */
35 struct rcar_gen4_sysc_info {
36 	const struct rcar_gen4_sysc_area *areas;
37 	unsigned int num_areas;
38 };
39 
40 extern const struct rcar_gen4_sysc_info r8a779a0_sysc_info;
41 extern const struct rcar_gen4_sysc_info r8a779f0_sysc_info;
42 extern const struct rcar_gen4_sysc_info r8a779g0_sysc_info;
43 
44 #endif /* __SOC_RENESAS_RCAR_GEN4_SYSC_H__ */
45