[PATCH 1/4] clk: meson8b: keep mpll2 clock enabled

[jbrunet@baylibre.com (Jerome Brunet)]

On Wed, 2017-09-27 at 12:40 +0200, Emiliano Ingrassia wrote:
> The mpll2 clock, enabled by the bootloader, is disabled at boot.
> Enabling ethernet on Odroid-C1+ board leads to DMA initialization failure
> caused by a timeout on reset.
> Keeping the mpll2 clock enabled solve this issue.

Shouldn't the DMA driver emable the clocks it needs itself instead ?
BTW, I'm bit surprised an mpll is used to clock a DMA, is it possible we missed
something here ?

> 
> Signed-off-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
> ---
>  drivers/clk/meson/meson8b.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
> index 20ab7190d328..5096539e4a63 100644
> --- a/drivers/clk/meson/meson8b.c
> +++ b/drivers/clk/meson/meson8b.c
> @@ -347,6 +347,7 @@ static struct meson_clk_mpll meson8b_mpll2 = {
>  		.ops = &meson_clk_mpll_ops,
>  		.parent_names = (const char *[]){ "fixed_pll" },
>  		.num_parents = 1,
> +		.flags = (CLK_SET_RATE_NO_REPARENT | CLK_IGNORE_UNUSED),
>  	},
>  };
>