Subject: [PATCH v3 1/2] CLK: TI: OMAP4/5/DRA7: Remove gpmc_fck from dummy clocks

From: [email-masked] (Tony Lindgren)
Date: Fri, 28 Feb 2014 09:28:37 -0800

* Mike Turquette <[email-masked]> [140226 12:43]:
> Quoting Florian Vaussard (2014-02-26 02:38:08)
> > When arch/arm/mach-omap2/gpmc.c calls clk_get(..., "fck"), it will
> > get a dummy clock and try to use it. As the rate is configured to zero,
> > this will result in several divisions by zero, and misconfigured
> > timings, with devices on the bus being lost in the La La Land.
> > 
> > It is better to remove gpmc_fck from the dummy clocks, so that gpmc.c
> > can fail gracefully.
> > 
> > Signed-off-by: Florian Vaussard <[email-masked]>
> 
> Looks good to me.

Can that be upgraded to an ack then?

Regards,

Tony
 
> > ---
> >  drivers/clk/ti/clk-44xx.c | 1 -
> >  drivers/clk/ti/clk-54xx.c | 1 -
> >  drivers/clk/ti/clk-7xx.c  | 1 -
> >  3 files changed, 3 deletions(-)
> > 
> > diff --git a/drivers/clk/ti/clk-44xx.c b/drivers/clk/ti/clk-44xx.c
> > index ae00218..02517a8 100644
> > --- a/drivers/clk/ti/clk-44xx.c
> > +++ b/drivers/clk/ti/clk-44xx.c
> > @@ -222,7 +222,6 @@ static struct ti_dt_clk omap44xx_clks[] = {
> >         DT_CLK(NULL, "auxclk5_src_ck", "auxclk5_src_ck"),
> >         DT_CLK(NULL, "auxclk5_ck", "auxclk5_ck"),
> >         DT_CLK(NULL, "auxclkreq5_ck", "auxclkreq5_ck"),
> > -       DT_CLK("50000000.gpmc", "fck", "dummy_ck"),
> >         DT_CLK("omap_i2c.1", "ick", "dummy_ck"),
> >         DT_CLK("omap_i2c.2", "ick", "dummy_ck"),
> >         DT_CLK("omap_i2c.3", "ick", "dummy_ck"),
> > diff --git a/drivers/clk/ti/clk-54xx.c b/drivers/clk/ti/clk-54xx.c
> > index 0ef9f58..08f3d1b 100644
> > --- a/drivers/clk/ti/clk-54xx.c
> > +++ b/drivers/clk/ti/clk-54xx.c
> > @@ -182,7 +182,6 @@ static struct ti_dt_clk omap54xx_clks[] = {
> >         DT_CLK(NULL, "auxclk3_src_ck", "auxclk3_src_ck"),
> >         DT_CLK(NULL, "auxclk3_ck", "auxclk3_ck"),
> >         DT_CLK(NULL, "auxclkreq3_ck", "auxclkreq3_ck"),
> > -       DT_CLK(NULL, "gpmc_ck", "dummy_ck"),
> >         DT_CLK("omap_i2c.1", "ick", "dummy_ck"),
> >         DT_CLK("omap_i2c.2", "ick", "dummy_ck"),
> >         DT_CLK("omap_i2c.3", "ick", "dummy_ck"),
> > diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c
> > index 9977653..f7e4073 100644
> > --- a/drivers/clk/ti/clk-7xx.c
> > +++ b/drivers/clk/ti/clk-7xx.c
> > @@ -262,7 +262,6 @@ static struct ti_dt_clk dra7xx_clks[] = {
> >         DT_CLK(NULL, "vip1_gclk_mux", "vip1_gclk_mux"),
> >         DT_CLK(NULL, "vip2_gclk_mux", "vip2_gclk_mux"),
> >         DT_CLK(NULL, "vip3_gclk_mux", "vip3_gclk_mux"),
> > -       DT_CLK(NULL, "gpmc_ck", "dummy_ck"),
> >         DT_CLK("omap_i2c.1", "ick", "dummy_ck"),
> >         DT_CLK("omap_i2c.2", "ick", "dummy_ck"),
> >         DT_CLK("omap_i2c.3", "ick", "dummy_ck"),
> > -- 
> > 1.8.1.2
> >