[PATCH 0/2] clk: Implement a clock request API

[Maxime Ripard]

Hi,

This is a follow-up of the discussion here:
https://lore.kernel.org/linux-clk/20210319150355.xzw7ikwdaga2dwhv@gilmour/

This implements a mechanism to raise and lower clock rates based on consumer
workloads, with an example of such an implementation for the RaspberryPi4 HDMI
controller.

There's a couple of things worth discussing:

  - The name is in conflict with clk_request_rate, and even though it feels
    like the right name to me, we should probably avoid any confusion

  - The code so far implements a policy of always going for the lowest rate
    possible. While we don't have an use-case for something else, this should
    maybe be made more flexible?

Let me know what you think
Maxime

Maxime Ripard (2):
  clk: Introduce a clock request API
  drm/vc4: hdmi: Convert to the new clock request API

 drivers/clk/clk.c              | 121 +++++++++++++++++++++++++++++++++
 drivers/gpu/drm/vc4/vc4_hdmi.c |  19 ++++--
 drivers/gpu/drm/vc4/vc4_hdmi.h |   3 +
 include/linux/clk.h            |   4 ++
 4 files changed, 140 insertions(+), 7 deletions(-)

-- 
2.30.2