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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>
This commit is contained in:
Geert Uytterhoeven 2017-01-25 10:02:13 +01:00 committed by Simon Horman
parent 70def3e536
commit aa7f39d51e
1 changed files with 29 additions and 11 deletions
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40
arch/arm/mach-shmobile/pm-rcar-gen2.c
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@ -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);