Re: [PATCH 01/19] clk: sunxi: Add display clock

Maxime Ripard
2015-11-06T19:42:20Z

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Hi,

On Sat, Oct 31, 2015 at 06:28:16PM +0800, Chen-Yu Tsai wrote:
> Hi,
>
> On Fri, Oct 30, 2015 at 10:20 PM, Maxime Ripard
> <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> wrote:
> > The A10 SoCs and its relatives has a special clock controller to drive the
> > display engines (both frontend and backend).
> >
> > Add a driver for it.
> >
> > Signed-off-by: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> > ---
> > drivers/clk/sunxi/Makefile | 1 +
> > drivers/clk/sunxi/clk-sun4i-display.c | 199 ++++++++++++++++++++++++++++++++++
> > 2 files changed, 200 insertions(+)
> > create mode 100644 drivers/clk/sunxi/clk-sun4i-display.c
> >
> > diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
> > index cb4c299214ce..a9e1a5885846 100644
> > --- a/drivers/clk/sunxi/Makefile
> > +++ b/drivers/clk/sunxi/Makefile
> > @@ -9,6 +9,7 @@ obj-y += clk-a10-mod1.o
> > obj-y += clk-a10-pll2.o
> > obj-y += clk-a20-gmac.o
> > obj-y += clk-mod0.o
> > +obj-y += clk-sun4i-display.o
> > obj-y += clk-simple-gates.o
> > obj-y += clk-sun8i-mbus.o
> > obj-y += clk-sun9i-core.o
> > diff --git a/drivers/clk/sunxi/clk-sun4i-display.c b/drivers/clk/sunxi/clk-sun4i-display.c
> > new file mode 100644
> > index 000000000000..f13b095c6d7a
> > --- /dev/null
> > +++ b/drivers/clk/sunxi/clk-sun4i-display.c
> > @@ -0,0 +1,199 @@
> > +/*
> > + * Copyright 2015 Maxime Ripard
> > + *
> > + * Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of the GNU General Public License as published by
> > + * the Free Software Foundation; either version 2 of the License, or
> > + * (at your option) any later version.
> > + *
> > + * This program is distributed in the hope that it will be useful,
> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + * GNU General Public License for more details.
> > + */
> > +
> > +#include <linux/clk-provider.h>
> > +#include <linux/of_address.h>
> > +#include <linux/reset-controller.h>
> > +#include <linux/slab.h>
> > +#include <linux/spinlock.h>
> > +
> > +#define SUN4I_A10_DISPLAY_PARENTS 3
>
> Can we change this to 4, so we can reuse this for TCON clocks on
> sun4i/sun7i?

Good point, I'll change this.

Thanks!
Maxime

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Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering