On Thu, 06 Nov 2014 16:05:13 +0100
, Hans de Goede [off-list ref]
 wrote:

Hi,

On 11/06/2014 03:18 PM, Tomi Valkeinen wrote:

quoted

On 31/10/14 10:15, Tomi Valkeinen wrote:

quoted

Hi Hans,

On 22/10/14 19:45, Hans de Goede wrote:

quoted

-We will add a clocks property to the simplefb devicetree bindings, so
 that u-boot setup framebuffers passed to the kernel (for early console
 support) can properly list the clocks used, and simplefb can claim them to
 avoid them getting turned off, thereby breaking the early console

Perhaps this has been discussed earlier, but I started to wonder if
managing clocks is enough.

What about regulators (to power the LCD), gpios (to keep the LCD
enabled) and pinctrl (for video signals)? I guess any those could be
reset by the kernel if no driver uses them.

I'm okay with extending the binding for each of these dependencies
/providing/ it can be argued that the way simplefb uses it is merely to
inhibit the kernel from making any changes to the resource, and then
releasing the resource when it is done. Each resource type will need to
be taken on a case-by-case basis since each has it's own behaviour. I'll
want to see that the simplefb driver doesn't need to do anything special
per device, and that the resource binding is well established and
generic.

g.