lkml.org 
[lkml]   [2019]   [Jan]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3 lora-next 5/5] net: lora: sx125x sx1301: allow radio to register as a clk provider
On Wed, Jan 02, 2019 at 01:44:40AM +0100, Andreas Färber wrote:

> So, the third invocation of sun6i_transfer_one() calling clk_get_rate()
> hangs at the prepare_lock instead of reference-counting, because it runs
> from a separate kthread, unlike the two previous calls?

If there's any contestation for the bus we push all the I/O through a
separate thread to maintain ordering and improve performance.

> I did not find any *regmap_init_spi() based example in drivers/clk/, and
> all other "spi" mentions in drivers/clk/ appeared to be clock names.
> The closest was devm_regmap_init_i2c() based clk-cdce706.c, which uses
> the prepare/unprepare ops, as suggested by Mark, and does
> regmap_update_bits() from there.

You'll find a bunch of the MFDs have SPI options as well.
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2019-01-03 13:38    [W:0.058 / U:7.808 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site