Messages in this thread | | | Date | Thu, 30 Apr 2015 10:37:36 +0800 | From | Dong Aisheng <> | Subject | Re: [PATCH RFC v1 0/5] clk: support clocks which requires parent clock on during operation |
| |
Hi Guys,
On Wed, Apr 22, 2015 at 02:12:43PM +0800, Dong Aisheng wrote: > 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. >
Ping again..
Any comments about this patch series?
Regards Dong Aisheng
> Regards > Dong Aisheng > > > drivers/clk/clk.c | 112 ++++++++++++++++++++++++++++++++++--------- > > include/linux/clk-provider.h | 5 ++ > > 2 files changed, 94 insertions(+), 23 deletions(-) > > > > -- > > 1.9.1 > >
| |