diff options
| author | Ben Dooks <ben@simtec.co.uk> | 2009-07-31 02:23:37 +0400 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2009-07-31 02:22:55 +0400 |
| commit | 140780ab5a2bc04ccff77337c3a27f3b44182a91 (patch) | |
| tree | 719cc3986597f78ee9197404e31738b484de11c7 /arch/arm/plat-s3c24xx/include | |
| parent | 25400036867fa7a135fca17810555400d176acaa (diff) | |
| download | linux-140780ab5a2bc04ccff77337c3a27f3b44182a91.tar.xz | |
ARM: S3C24XX: CPUFREQ: S3C2412/S3C2443 IO timing support
Add IO bank timing support for S3C2412/S3C2443.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s3c24xx/include')
| -rw-r--r-- | arch/arm/plat-s3c24xx/include/plat/cpu-freq-core.h | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/arch/arm/plat-s3c24xx/include/plat/cpu-freq-core.h b/arch/arm/plat-s3c24xx/include/plat/cpu-freq-core.h index 7938fb0bc387..f02b3c06c1e0 100644 --- a/arch/arm/plat-s3c24xx/include/plat/cpu-freq-core.h +++ b/arch/arm/plat-s3c24xx/include/plat/cpu-freq-core.h @@ -42,8 +42,44 @@ struct s3c2410_iobank_timing { unsigned char nwait_en; /* nWait enabled for bank. */ }; +/** + * struct s3c2412_iobank_timing - io timings for PL092 (S3C2412) style IO + * @idcy: The idle cycle time between transactions. + * @wstrd: nCS release to end of read cycle. + * @wstwr: nCS release to end of write cycle. + * @wstoen: nCS assertion to nOE assertion time. + * @wstwen: nCS assertion to nWE assertion time. + * @wstbrd: Burst ready delay. + * @smbidcyr: Register cache for smbidcyr value. + * @smbwstrd: Register cache for smbwstrd value. + * @smbwstwr: Register cache for smbwstwr value. + * @smbwstoen: Register cache for smbwstoen value. + * @smbwstwen: Register cache for smbwstwen value. + * @smbwstbrd: Register cache for smbwstbrd value. + * + * Timing information for a IO bank on an S3C2412 or similar system which + * uses a PL093 block. + */ +struct s3c2412_iobank_timing { + unsigned int idcy; + unsigned int wstrd; + unsigned int wstwr; + unsigned int wstoen; + unsigned int wstwen; + unsigned int wstbrd; + + /* register cache */ + unsigned char smbidcyr; + unsigned char smbwstrd; + unsigned char smbwstwr; + unsigned char smbwstoen; + unsigned char smbwstwen; + unsigned char smbwstbrd; +}; + union s3c_iobank { - struct s3c2410_iobank_timing *io_2410; + struct s3c2410_iobank_timing *io_2410; + struct s3c2412_iobank_timing *io_2412; }; /** @@ -174,6 +210,20 @@ extern void s3c2410_iotiming_set(struct s3c_cpufreq_config *cfg, extern void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg); +/* S3C2412 compatible routines */ + +extern int s3c2412_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + +extern int s3c2412_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + +extern int s3c2412_iotiming_calc(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); + +extern void s3c2412_iotiming_set(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); + #ifdef CONFIG_CPU_FREQ_S3C24XX_DEBUG #define s3c_freq_dbg(x...) printk(KERN_INFO x) #else |