diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2007-06-21 11:34:16 +0800 |
|---|---|---|
| committer | Bryan Wu <bryan.wu@analog.com> | 2007-06-21 11:34:16 +0800 |
| commit | 1c5d2265a82f8d3fa0471a60ca98072b3c53c299 (patch) | |
| tree | d0644427e9d700df594fa8dbcbb1338bfd982ac2 /include/asm-blackfin/mach-bf548 | |
| parent | f8ffe652a01506e85e2dd579c58e50a3ba391921 (diff) | |
Blackfin arch: add missing implementations SIC_IWR crosses several registers
SIC_IWR crosses several registers
- add missing implementations
- make sure SIC_IWR is SET after boot
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'include/asm-blackfin/mach-bf548')
| -rw-r--r-- | include/asm-blackfin/mach-bf548/cdefBF54x_base.h | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/include/asm-blackfin/mach-bf548/cdefBF54x_base.h b/include/asm-blackfin/mach-bf548/cdefBF54x_base.h index b1338000e27..87f2385ed97 100644 --- a/include/asm-blackfin/mach-bf548/cdefBF54x_base.h +++ b/include/asm-blackfin/mach-bf548/cdefBF54x_base.h @@ -32,6 +32,7 @@ #define _CDEF_BF54X_H #include "defBF54x_base.h" +#include <asm/system.h> /* ************************************************************** */ /* SYSTEM & MMR ADDRESS DEFINITIONS COMMON TO ALL ADSP-BF54x */ @@ -44,7 +45,31 @@ #define bfin_read_PLL_DIV() bfin_read16(PLL_DIV) #define bfin_write_PLL_DIV(val) bfin_write16(PLL_DIV, val) #define bfin_read_VR_CTL() bfin_read16(VR_CTL) -#define bfin_write_VR_CTL(val) bfin_write16(VR_CTL, val) +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1, iwr2; + + /* Enable the PLL Wakeup bit in SIC IWR */ + iwr0 = bfin_read32(SIC_IWR0); + iwr1 = bfin_read32(SIC_IWR1); + iwr2 = bfin_read32(SIC_IWR2); + /* Only allow PPL Wakeup) */ + bfin_write32(SIC_IWR0, IWR_ENABLE(0)); + bfin_write32(SIC_IWR1, 0); + bfin_write32(SIC_IWR2, 0); + + bfin_write16(VR_CTL, val); + __builtin_bfin_ssync(); + + local_irq_save(flags); + asm("IDLE;"); + local_irq_restore(flags); + bfin_write32(SIC_IWR0, iwr0); + bfin_write32(SIC_IWR1, iwr1); + bfin_write32(SIC_IWR2, iwr2); + +} #define bfin_read_PLL_STAT() bfin_read16(PLL_STAT) #define bfin_write_PLL_STAT(val) bfin_write16(PLL_STAT, val) #define bfin_read_PLL_LOCKCNT() bfin_read16(PLL_LOCKCNT) |