drm/sun4i: dsi: Handle bus clock via regmap_mmio_attach_clk

Browse source

regmap has special API to enable the controller bus clock while
initializing register space, and current driver is using
devm_regmap_init_mmio_clk which require to specify bus
clk_id argument as "bus"

But, the usage of clocks are varies between different Allwinner
DSI controllers. Clocking in A33 would need bus and mod clocks
where as A64 would need only bus clock.

Since A64 support only single bus clock, it is optional to
specify the clock-names on the controller device tree node.
So using NULL on clk_id would get the attached clock.

To support clk_id as "bus" and "NULL" during clock enablement
between controllers, this patch add generic code to handle
the bus clock using regmap_mmio_attach_clk with associated
regmap APIs.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20191222132229.30276-5-jagan@amarulasolutions.com

...

This commit is contained in:

Jagan Teki 2019-12-22 18:52:26 +05:30 • committed by Maxime Ripard

parent 26a839b3c2

commit 66dbdc7c61

No known key found for this signature in database

GPG key ID: E3EF0D6F671851C5

1 changed files with 29 additions and 8 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

37

drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c

View file