Messages in this thread | | | Date | Wed, 27 Jul 2016 08:59:34 +0200 | From | Maxime Ripard <> | Subject | Re: [PATCH 4/9] clk: sunxi-ng: mux: Add support for mux tables |
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On Tue, Jul 26, 2016 at 07:43:06PM +0200, Jean-Francois Moine wrote: > On Tue, 26 Jul 2016 15:04:26 +0800 > Chen-Yu Tsai <wens@csie.org> wrote: > > > Some clock muxes have holes, i.e. invalid or unconnected inputs, > > between parent mux values. > > > > Add support for specifying a mux table to map clock parents to > > mux values. > > Putting empty strings in the holes should work. No? > Ex: > > static const char * const csi_mclk_parents[] = > { "pll-video0", "pll-video1", "", "", "", "osc24M" };
Not really. The clock would be declared as orphan, while it's really not.
Parenting functions would also not work as expected, clk_hw_get_parent_by_index being the obvious example, in that case returning the empty string for an invalid parent, while it should really return NULL.
Maxime
-- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com [unhandled content-type:application/pgp-signature] | |