xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

SPARC/LEON: power down instruction different of different LEONs

Browse Source 
The way a LEON is powered down is implemented differently depending
on CHIP type. The AMBA Plug&Play system ID tells revision of GRLIB
and CHIP.

This is for example needed by the GR-LEON4-ITX board and the UT699.

Previously the power down support for LEON was limited to SMP, now
both SMP and UP systems use the instruction.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Hellstrom
2011-01-27 01:26:58 +00:00
committed by David S. Miller
parent 684151a75b
commit 7279b82cb1
5 changed files with 97 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/sparc/include/asm/leon_amba.h
View File

@@ -180,6 +180,7 @@ struct amba_ahb_device {
struct device_node;
void _amba_init(struct device_node *dp, struct device_node ***nextp);
extern unsigned long amba_system_id;
extern struct leon3_irqctrl_regs_map *leon3_irqctrl_regs;
extern struct leon3_gptimer_regs_map *leon3_gptimer_regs;
extern struct amba_apb_device leon_percpu_timer_dev[16];
@@ -254,6 +255,11 @@ extern unsigned int sparc_leon_eirq;
#define GAISLER_L2C 0xffe /* internal device: leon2compat */
#define GAISLER_PLUGPLAY 0xfff /* internal device: plug & play configarea */
/* Chip IDs */
#define AEROFLEX_UT699 0x0699
#define LEON4_NEXTREME1 0x0102
#define GAISLER_GR712RC 0x0712
#define amba_vendor(x) (((x) >> 24) & 0xff)
#define amba_device(x) (((x) >> 12) & 0xfff)