diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2010-07-05 13:39:16 (GMT) |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-08-06 16:55:52 (GMT) |
| commit | 7a4a207e74d6aeb63a38e9a3f0cfc40223d5c40e (patch) | |
| tree | 21d440f3cf0e3dd2be9daedd345778073d78c2d0 /arch/blackfin/kernel | |
| parent | 812ae98f0849fbceb32c6d21bcdda42b40264c82 (diff) | |
| download | linux-7a4a207e74d6aeb63a38e9a3f0cfc40223d5c40e.tar.xz | |
Blackfin: BF51x/BF52x: support GPIO Hysteresis/Schmitt Trigger options
Newer parts have optional Hysteresis/Schmitt Trigger options to help with
dirty signals. So add some kconfig options for tuning this and enable it
by default for people.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/kernel')
| -rw-r--r-- | arch/blackfin/kernel/setup.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index d37a397..ac71dc1 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -864,6 +864,13 @@ void __init setup_arch(char **cmdline_p) bfin_write_EBIU_MODE(CONFIG_EBIU_MODEVAL); bfin_write_EBIU_FCTL(CONFIG_EBIU_FCTLVAL); #endif +#ifdef CONFIG_BFIN_HYSTERESIS_CONTROL + bfin_write_PORTF_HYSTERISIS(HYST_PORTF_0_15); + bfin_write_PORTG_HYSTERISIS(HYST_PORTG_0_15); + bfin_write_PORTH_HYSTERISIS(HYST_PORTH_0_15); + bfin_write_MISCPORT_HYSTERISIS((bfin_read_MISCPORT_HYSTERISIS() & + ~HYST_NONEGPIO_MASK) | HYST_NONEGPIO); +#endif cclk = get_cclk(); sclk = get_sclk(); |