diff options
| author | Alex Elder <elder@linaro.org> | 2014-04-21 16:11:43 -0500 |
|---|---|---|
| committer | Mike Turquette <mturquette@linaro.org> | 2014-04-30 11:51:38 -0700 |
| commit | dc613840a625bfad38141d2d8bbdb0c7bc3d45eb (patch) | |
| tree | 9cc26fa89833eee39df05a074cbcf8eb414d023d /drivers/clk/bcm/clk-kona.h | |
| parent | a597faccc7eedd406313e880ed05ff75bc522910 (diff) | |
| download | linux-dc613840a625bfad38141d2d8bbdb0c7bc3d45eb.tar.bz2 | |
clk: bcm281xx: add clock hysteresis support
Add support for clock gate hysteresis control. For now, if it's
defined for a clock, it's enabled.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/bcm/clk-kona.h')
| -rw-r--r-- | drivers/clk/bcm/clk-kona.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/clk/bcm/clk-kona.h b/drivers/clk/bcm/clk-kona.h index 4bcba1331561..2537b3072910 100644 --- a/drivers/clk/bcm/clk-kona.h +++ b/drivers/clk/bcm/clk-kona.h @@ -60,6 +60,8 @@ #define gate_flip_enabled(gate) FLAG_FLIP(gate, GATE, ENABLED) +#define hyst_exists(hyst) ((hyst)->offset != 0) + #define divider_exists(div) FLAG_TEST(div, DIV, EXISTS) #define divider_is_fixed(div) FLAG_TEST(div, DIV, FIXED) #define divider_has_fraction(div) (!divider_is_fixed(div) && \ @@ -205,6 +207,22 @@ struct bcm_clk_gate { .flags = FLAG(GATE, HW)|FLAG(GATE, EXISTS), \ } +/* Gate hysteresis for clocks */ +struct bcm_clk_hyst { + u32 offset; /* hyst register offset (normally CLKGATE) */ + u32 en_bit; /* bit used to enable hysteresis */ + u32 val_bit; /* if enabled: 0 = low delay; 1 = high delay */ +}; + +/* Hysteresis initialization macro */ + +#define HYST(_offset, _en_bit, _val_bit) \ + { \ + .offset = (_offset), \ + .en_bit = (_en_bit), \ + .val_bit = (_val_bit), \ + } + /* * Each clock can have zero, one, or two dividers which change the * output rate of the clock. Each divider can be either fixed or @@ -372,6 +390,7 @@ struct bcm_clk_trig { struct peri_clk_data { struct bcm_clk_policy policy; struct bcm_clk_gate gate; + struct bcm_clk_hyst hyst; struct bcm_clk_trig pre_trig; struct bcm_clk_div pre_div; struct bcm_clk_trig trig; |