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| author | Robert ABEL <rabel@cit-ec.uni-bielefeld.de> | 2015-02-27 18:56:53 +0300 |
|---|---|---|
| committer | Roger Quadros <rogerq@ti.com> | 2015-03-06 13:39:48 +0300 |
| commit | 2e67690137f3a7bac660edd548f8846709c55381 (patch) | |
| tree | 33262ac06753bd02df92a27fe520f24761dd1847 /include/linux/omap-gpmc.h | |
| parent | f585070b91950a0269eb20f497cceeee0aeefe0e (diff) | |
| download | linux-2e67690137f3a7bac660edd548f8846709c55381.tar.xz | |
ARM OMAP2+ GPMC: calculate GPMCFCLKDIVIDER based on WAITMONITORINGTIME
The WAITMONITORINGTIME is expressed as a number of GPMC_CLK clock cycles,
even though the access is defined as asynchronous, and no GPMC_CLK clock
is provided to the external device. Still, GPMCFCLKDIVIDER is used as a divider
for the GPMC clock, so it must be programmed to define the
correct WAITMONITORINGTIME delay.
Calculate GPMCFCLKDIVIDER independent of gpmc,sync-clk-ps in DT for
pure asynchronous accesses, i.e. both read and write asynchronous.
Signed-off-by: Robert ABEL <rabel@cit-ec.uni-bielefeld.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Diffstat (limited to 'include/linux/omap-gpmc.h')
| -rw-r--r-- | include/linux/omap-gpmc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/omap-gpmc.h b/include/linux/omap-gpmc.h index c2080eebbb47..7dee00143afd 100644 --- a/include/linux/omap-gpmc.h +++ b/include/linux/omap-gpmc.h @@ -163,7 +163,8 @@ extern unsigned int gpmc_ticks_to_ns(unsigned int ticks); extern void gpmc_cs_write_reg(int cs, int idx, u32 val); extern int gpmc_calc_divider(unsigned int sync_clk); -extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t); +extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t, + const struct gpmc_settings *s); extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p); extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base); extern void gpmc_cs_free(int cs); |