linux-kernel - Re: [PATCH] clk: sunxi-ng: h6: Allow GPU to change parent rate

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Message-ID: <20191002060626.kd37juvhu3jlbxrp@gilmour>
Date:   Wed, 2 Oct 2019 08:06:26 +0200
From:   Maxime Ripard <mripard@...nel.org>
To:     Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     wens@...e.org, mturquette@...libre.com, sboyd@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clk: sunxi-ng: h6: Allow GPU to change parent rate

Hi,

On Tue, Oct 01, 2019 at 10:06:56PM +0200, Jernej Skrabec wrote:
> GPU PLL was designed with dynamic frequency switching in mind so driver
> can adjust rate based on the GPU load.
>
> Allow GPU clock to change parent rate (GPU PLL is the only possible
> parent of GPU clock).
>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
> ---
>  drivers/clk/sunxi-ng/ccu-sun50i-h6.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-h6.c b/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
> index d89353a3cdec..e254c06c8621 100644
> --- a/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
> +++ b/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
> @@ -290,7 +290,7 @@ static SUNXI_CCU_M_WITH_MUX_GATE(gpu_clk, "gpu", gpu_parents, 0x670,
>  				       0, 3,	/* M */
>  				       24, 1,	/* mux */
>  				       BIT(31),	/* gate */
> -				       0);
> +				       CLK_SET_RATE_PARENT);
>
>  static SUNXI_CCU_GATE(bus_gpu_clk, "bus-gpu", "psi-ahb1-ahb2",
>  		      0x67c, BIT(0), 0);

Applied, thanks!
Maxime

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