On Mon, Apr 25, 2016 at 04:08:29PM +0200, Geert Uytterhoeven wrote:
> Hi Simon, Magnus,
>
> clk_get() on a disabled clock node will return -EPROBE_DEFER, which can
> cause drivers to be deferred forever if such clocks are referenced in
> their devices' clocks properties. Disabled clock nodes show this
> behavior as of commit 3e5dd6f6e690048d ("clk: Ignore disabled DT clock
> providers"), which is in v4.6-rc1.
>
> Commit ac6908b3049397b1 ("ARM: dts: r8a7791: Don't disable referenced
> optional clocks") fixed this for the Porter development board, which
> doesn't have the SCIF_CLK crystal populated. This patch series fixes
> the same problem for the remaining Renesas DTSes, by updating disabled
> external clock nodes to default to a frequency of 0, but not disabling
> them.
>
> None of these should show up with in-tree supported boards, but Jürg
> Billeter <j@xxxxxxxxx> reported seeing the problem with v4.6-rc5 on a
> custom R-Car H3 board. Hence you may want to queue at least the arm64
> fix for v4.6.
>
> Thanks!
Thanks.
I have tentatively done the following:
* Queued up the portion of the arm64 patch that is relevant to v4.6
(i.e. changes DT nodes that exist in v4.6) as a fix for v4.6.
* Queued up the rest for v4.7
Please check that what is in renesas-next-20160426-v4.6-rc1 looks sensible.
