diff options
| author | Bill Zhou <zhoub@marvell.com> | 2015-06-19 10:44:16 +0800 |
|---|---|---|
| committer | Tim Wang <wangtt@marvell.com> | 2015-06-23 17:31:49 +0800 |
| commit | 6f514d5487aef1c5293e0e9862c19269e9996076 (patch) | |
| tree | d27a57b0e28e65ee358f07b059224a4b27267694 | |
| parent | 61dcb4d6b5f5608dd8c39a10aa41da95276ff685 (diff) | |
| download | marvell-6f514d5487aef1c5293e0e9862c19269e9996076.tar.gz | |
clk: mmp: pxa1936: add interface to detect TSMC B0
GC team need this interface to distinguish
TSMC B0 from others and use different GC3d
pp table accordingly.
Change-Id: I35b9a51b1d404466cd5bfc439ecd48a7bff39dc6
Signed-off-by: Bill Zhou <zhoub@marvell.com>
| -rw-r--r-- | drivers/clk/mmp/dvfs-pxa1936.c | 14 | ||||
| -rw-r--r-- | include/linux/clk/mmpfuse.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/clk/mmp/dvfs-pxa1936.c b/drivers/clk/mmp/dvfs-pxa1936.c index 90907ae16a1..f3fac876cb5 100644 --- a/drivers/clk/mmp/dvfs-pxa1936.c +++ b/drivers/clk/mmp/dvfs-pxa1936.c @@ -318,6 +318,20 @@ char *convert_step_revision(unsigned int step_id) return "not SEC and TSMC chip"; } +/* + * This interface will be used by GC to detect whether chip + * stepping is TSMC_B0, and they will use it to distinguish + * GC3d pp table. + */ +int is_helan3_stepping_TSMC_B0(void) +{ + if (chip_stepping == TSMC_28LP_B020A || chip_stepping == TSMC_28LP_B121A) + return 1; + + return 0; +} +EXPORT_SYMBOL(is_helan3_stepping_TSMC_B0); + static int __init __init_read_droinfo(void) { struct fuse_info arg; diff --git a/include/linux/clk/mmpfuse.h b/include/linux/clk/mmpfuse.h index 348349eba22..ac1d6107d54 100644 --- a/include/linux/clk/mmpfuse.h +++ b/include/linux/clk/mmpfuse.h @@ -7,6 +7,7 @@ extern unsigned int get_iddq_130(void); extern unsigned int get_skusetting(void); extern unsigned int get_chipfab(void); extern int get_fuse_suspd_voltage(void); /* unit: mV */ +extern int is_helan3_stepping_TSMC_B0(void); enum fab { TSMC = 0, |