diff options
| author | Jim Quinlan <jim2101024@gmail.com> | 2015-05-15 15:45:47 -0400 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2015-07-28 11:59:19 -0700 |
| commit | afe76c8fd030dd6b75fa69f7af7b7eb1e212f248 (patch) | |
| tree | fcf7c6f403d54380eeef1b549a7197cc8dfa756e /include/linux/clk-provider.h | |
| parent | 25d4d341d31b349836e1b12d10be34b9b575c12b (diff) | |
clk: allow a clk divider with max divisor when zero
This commit allows certain Broadcom STB clock dividers to be used with
clk-divider.c. It allows for a clock whose field value is the equal
to the divisor, execpt when the field value is zero, in which case the
divisor is 2^width. For example, consider a divisor clock with a two
bit field:
value divisor
0 4
1 1
2 2
3 3
Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Diffstat (limited to 'include/linux/clk-provider.h')
| -rw-r--r-- | include/linux/clk-provider.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 402478ed9933..699a25075170 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -361,6 +361,9 @@ struct clk_div_table { * to the closest integer instead of the up one. * CLK_DIVIDER_READ_ONLY - The divider settings are preconfigured and should * not be changed by the clock framework. + * CLK_DIVIDER_MAX_AT_ZERO - For dividers which are like CLK_DIVIDER_ONE_BASED + * except when the value read from the register is zero, the divisor is + * 2^width of the field. */ struct clk_divider { struct clk_hw hw; @@ -378,6 +381,7 @@ struct clk_divider { #define CLK_DIVIDER_HIWORD_MASK BIT(3) #define CLK_DIVIDER_ROUND_CLOSEST BIT(4) #define CLK_DIVIDER_READ_ONLY BIT(5) +#define CLK_DIVIDER_MAX_AT_ZERO BIT(6) extern const struct clk_ops clk_divider_ops; |