Messages in this thread | | | From | Andy Shevchenko <> | Subject | [PATCH v6 0/5] clk: fractional-divider: do a clean up and update | Date | Tue, 22 Sep 2015 18:54:07 +0300 |
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The series provides a clean up for clk-fractional-divider together with moving it to use rational best approximation algorithm. I think the patches are self-explanatory.
The series was tested with 8250_dw UART driver on Intel Braswell.
Patch 5 is an amendment to existing user of the fractional divider outside of clock framework.
Changelog v6: - rebase on top of latest clk-next branch - add ACKs from Heikki
Changelog v5: - drop patch 1 (there is another fix already in upstream) - add tags (Ack, Review)
Changelog v4: - remove dependency to clk_div_mask() and use GENMASK() instead - apply changes to rockchip - amend 8250_dw driver to use proposed changes
Changelog v3: - add patch 2/3 to simplify further usage - don't use mult_frac() due to potential overflow on 32 bit kernels - guarantee in ->round_rate() that m and n will not overflow
Changelog v2: - move to rational_best_approximation() and mult_frac() - add patch 2/2
Andy Shevchenko (5): clk: fractional-divider: rename prate -> parent_rate clk: fractional-divider: keep mwidth and nwidth internally clk: rockchip: save width in struct clk_fractional_divider clk: fractional-divider: switch to rational best approximation serial: 8250_dw: allow lower reference frequencies
drivers/clk/Kconfig | 1 + drivers/clk/clk-fractional-divider.c | 53 ++++++++++++++++++++++-------------- drivers/clk/rockchip/clk.c | 6 ++-- drivers/tty/serial/8250/8250_dw.c | 4 --- include/linux/clk-provider.h | 3 +- 5 files changed, 40 insertions(+), 27 deletions(-)
-- 2.5.1
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