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| author | Paul Walmsley <paul@pwsan.com> | 2010-12-21 21:05:14 -0700 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2010-12-21 21:05:14 -0700 |
| commit | dac9a77120e2724e22696f06f3ecb4838da1e3e4 (patch) | |
| tree | 7f7d91166a35efcdd4daf3e161e6532892250ef1 /arch/arm/mach-omap2/prm44xx.c | |
| parent | 2ace831ffc8feaffb8bc03da89ff43d948efdc97 (diff) | |
| download | blackbird-op-linux-dac9a77120e2724e22696f06f3ecb4838da1e3e4.tar.gz blackbird-op-linux-dac9a77120e2724e22696f06f3ecb4838da1e3e4.zip | |
OMAP4: PRCM: move global reset function for OMAP4 to an OMAP4-specific file
Move the OMAP4 global software reset function to the OMAP4-specific
prm44xx.c file, where it belongs. Part of the long-term process of
moving all of the direct PRCM register writes into lower-layer code.
Also add OCP barriers on OMAP2/3/4 to reduce the chance that the MPU
will continue executing while the system is supposed to be resetting
itself.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/prm44xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/prm44xx.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c index c016ae4cbad1..a2a04bfa9628 100644 --- a/arch/arm/mach-omap2/prm44xx.c +++ b/arch/arm/mach-omap2/prm44xx.c @@ -179,3 +179,17 @@ int omap4_prm_deassert_hardreset(void __iomem *rstctrl_reg, u8 shift) return (c == MAX_MODULE_HARDRESET_WAIT) ? -EBUSY : 0; } +void omap4_prm_global_warm_sw_reset(void) +{ + u32 v; + + v = omap4_prm_read_inst_reg(OMAP4430_PRM_DEVICE_INST, + OMAP4_RM_RSTCTRL); + v |= OMAP4430_RST_GLOBAL_WARM_SW_MASK; + omap4_prm_write_inst_reg(v, OMAP4430_PRM_DEVICE_INST, + OMAP4_RM_RSTCTRL); + + /* OCP barrier */ + v = omap4_prm_read_inst_reg(OMAP4430_PRM_DEVICE_INST, + OMAP4_RM_RSTCTRL); +} |
