Re: [PATCH v4 1/7] clk: msm8996-gcc: change halt check for USB/PCIE pipe_clk

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Quoting Doug Anderson (2018-03-29 13:55:55)
> Hi,
> 
> On Thu, Mar 29, 2018 at 4:04 AM, Manu Gautam <mgautam@xxxxxxxxxxxxxx> wrote:
> > The USB and PCIE pipe clocks are sourced from external clocks
> > inside the QMP USB/PCIE PHYs. Enabling or disabling of PIPE RCG
> > clocks is dependent on PHY initialization sequence hence
> > update halt_check to BRANCH_HALT_DELAY for these clocks so
> > that clock status bit is not polled when enabling or disabling
> > the clocks. It allows to simplify PHY client driver code which
> > is both user and source of the pipe_clk and avoid error logging
> > related status check on clk_disable/enable.
> >
> > Signed-off-by: Manu Gautam <mgautam@xxxxxxxxxxxxxx>
> > ---
> >  drivers/clk/qcom/gcc-msm8996.c | 4 ++++
> >  1 file changed, 4 insertions(+)
> 
> As per my feedback on <https://patchwork.kernel.org/patch/10314937/>,
> I'm not a fan of this.  Hopefully we can adjust the PHY driver so it's
> not needed.
> 

Agreed. We should be able to enable the clks at the right time and halt
bits should work. From what I can recall we had that working before on
db820c, so has something changed?
--
To unsubscribe from this list: send the line "unsubscribe linux-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Samsung SoC]     [Linux Rockchip SoC]     [Linux Actions SoC]     [Linux for Synopsys ARC Processors]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]


  Powered by Linux