On Wed, Apr 15, 2015 at 10:26:34PM +0800, Dong Aisheng wrote: > This patch series adds support in clock framework for clocks which operations > requires its parent clock is on. > > Such clock type is initially met on Freescale i.MX7D platform that all clocks > operations, including enable/disable, rate change and re-parent, requires its > parent clock on. No sure if any other SoC has the similar clock type. > > Current clock core can not support such type of clock well. > > This patch introduce a new flag CLK_SET_PARENT_ON to handle this special case > in clock core that enable its parent clock firstly for each operation and > disable > it later after operation complete. > > The most special case is for set_parent() operation which requires both > parent, > old one and new one, to be enabled at the same time during the operation. > > Patch 1~3 are minor cleanup & fixes. > Patch 4 add CLK_SET_PARENT_ON flags in clock core to support such type clocks > Patch 5 show the need of introducing clk_core_enable_lock and > clk_core_disable_lock to easily use and reduce duplicated code. > It can be merged into patch 4 if required. > > The patch series is based on for-next branch of Michael's git: > git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git > > Dong Aisheng (5): > clk: change clk_core name of __clk_set_parent_after > clk: add missing lock when call clk_core_enable in clk_set_parent > clk: remove unneeded __clk_enable and __clk_disable > clk: core: add CLK_SET_PARENT_ON flags to support clocks require > parent on > clk: introduce clk_core_enable_lock and clk_core_disable_lock > functions >
Gentle Ping. Regards Dong Aisheng > drivers/clk/clk.c | 112 > ++++++++++++++++++++++++++++++++++--------- > include/linux/clk-provider.h | 5 ++ > 2 files changed, 94 insertions(+), 23 deletions(-) > > -- > 1.9.1 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
