diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2017-01-25 12:02:13 +0300 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2017-01-25 13:28:28 +0300 |
| commit | aa7f39d51e33555fc45645c08bc74a74e22b166f (patch) | |
| tree | 9f889bfcd2392637d2209a09252be6fcb236e05f /arch/arm/mach-shmobile | |
| parent | 70def3e53694a65c5583fb5f411491a5074bab18 (diff) | |
| download | linux-aa7f39d51e33555fc45645c08bc74a74e22b166f.tar.xz | |
ARM: shmobile: rcar-gen2: Add more register documentation
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/mach-shmobile')
| -rw-r--r-- | arch/arm/mach-shmobile/pm-rcar-gen2.c | 40 |
1 files changed, 29 insertions, 11 deletions
diff --git a/arch/arm/mach-shmobile/pm-rcar-gen2.c b/arch/arm/mach-shmobile/pm-rcar-gen2.c index dd9ac366868f..0178da7ace82 100644 --- a/arch/arm/mach-shmobile/pm-rcar-gen2.c +++ b/arch/arm/mach-shmobile/pm-rcar-gen2.c @@ -20,14 +20,30 @@ /* RST */ #define RST 0xe6160000 -#define CA15BAR 0x0020 -#define CA7BAR 0x0030 -#define CA15RESCNT 0x0040 -#define CA7RESCNT 0x0044 + +#define CA15BAR 0x0020 /* CA15 Boot Address Register */ +#define CA7BAR 0x0030 /* CA7 Boot Address Register */ +#define CA15RESCNT 0x0040 /* CA15 Reset Control Register */ +#define CA7RESCNT 0x0044 /* CA7 Reset Control Register */ + +/* SYS Boot Address Register */ +#define SBAR_BAREN BIT(4) /* SBAR is valid */ + +/* Reset Control Registers */ +#define CA15RESCNT_CODE 0xa5a50000 +#define CA15RESCNT_CPUS 0xf /* CPU0-3 */ +#define CA7RESCNT_CODE 0x5a5a0000 +#define CA7RESCNT_CPUS 0xf /* CPU0-3 */ + /* On-chip RAM */ #define ICRAM1 0xe63c0000 /* Inter Connect RAM1 (4 KiB) */ +static inline u32 phys_to_sbar(phys_addr_t addr) +{ + return (addr >> 8) & 0xfffffc00; +} + /* SYSC */ #define SYSCIER 0x0c #define SYSCIMR 0x10 @@ -82,22 +98,24 @@ void __init rcar_gen2_pm_init(void) /* setup reset vectors */ p = ioremap_nocache(RST, 0x63); - bar = (boot_vector_addr >> 8) & 0xfffffc00; + bar = phys_to_sbar(boot_vector_addr); if (has_a15) { writel_relaxed(bar, p + CA15BAR); - writel_relaxed(bar | 0x10, p + CA15BAR); + writel_relaxed(bar | SBAR_BAREN, p + CA15BAR); /* de-assert reset for CA15 CPUs */ - writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | - 0xa5a50000, p + CA15RESCNT); + writel_relaxed((readl_relaxed(p + CA15RESCNT) & + ~CA15RESCNT_CPUS) | CA15RESCNT_CODE, + p + CA15RESCNT); } if (has_a7) { writel_relaxed(bar, p + CA7BAR); - writel_relaxed(bar | 0x10, p + CA7BAR); + writel_relaxed(bar | SBAR_BAREN, p + CA7BAR); /* de-assert reset for CA7 CPUs */ - writel_relaxed((readl_relaxed(p + CA7RESCNT) & ~0x0f) | - 0x5a5a0000, p + CA7RESCNT); + writel_relaxed((readl_relaxed(p + CA7RESCNT) & + ~CA7RESCNT_CPUS) | CA7RESCNT_CODE, + p + CA7RESCNT); } iounmap(p); |