linux-kernel - Re: [PATCH v4 5/8] clk: rockchip: Allow the RK3288 SPDIF clocks to change their parent

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Date:	Thu, 08 Oct 2015 17:10:40 +0200
From:	Heiko Stuebner <heiko@...ech.de>
To:	Sjoerd Simons <sjoerd.simons@...labora.co.uk>
Cc:	linux-rockchip@...ts.infradead.org,
	Jaroslav Kysela <perex@...ex.cz>, devicetree@...r.kernel.org,
	alsa-devel@...a-project.org, Mark Brown <broonie@...nel.org>,
	linux-kernel@...r.kernel.org, Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Takashi Iwai <tiwai@...e.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org
Subject: Re: [PATCH v4 5/8] clk: rockchip: Allow the RK3288 SPDIF clocks to change their parent

Am Donnerstag, 8. Oktober 2015, 15:31:16 schrieb Sjoerd Simons:
> The clock branches leading to sclk_spdif and sclk_spdif_8ch on RK3288
> SoCs only feed those clocks, allow those clocks to change their parents
> all the way up the hierarchy.
> 
> Signed-off-by: Sjoerd Simons <sjoerd.simons@...labora.co.uk>

Just as comment, if I'm seeing that right, this patch needs "clk: rockchip: 
handle mux dependency of fractional dividers" and friends [0] to apply and 
also actually handle the fractional dividers correctly.

For the clock change itself:
Reviewed-by: Heiko Stuebner <heiko@...ech.de>


Heiko

[0] http://lists.infradead.org/pipermail/linux-rockchip/2015-August/003930.html


> ---
> 
> Changes in v4: None
> Changes in v3: None
> Changes in v2: None
> 
>  drivers/clk/rockchip/clk-rk3288.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/clk/rockchip/clk-rk3288.c
> b/drivers/clk/rockchip/clk-rk3288.c index 90c1c9b..4e90252 100644
> --- a/drivers/clk/rockchip/clk-rk3288.c
> +++ b/drivers/clk/rockchip/clk-rk3288.c
> @@ -317,25 +317,25 @@ static struct rockchip_clk_branch
> rk3288_clk_branches[] __initdata = {
> 
>  	MUX(0, "spdif_src", mux_pll_src_cpll_gpll_p, 0,
>  			RK3288_CLKSEL_CON(5), 15, 1, MFLAGS),
> -	COMPOSITE_NOMUX(0, "spdif_pre", "spdif_src", 0,
> +	COMPOSITE_NOMUX(0, "spdif_pre", "spdif_src", CLK_SET_RATE_PARENT,
>  			RK3288_CLKSEL_CON(5), 0, 7, DFLAGS,
>  			RK3288_CLKGATE_CON(4), 4, GFLAGS),
> -	COMPOSITE_FRACMUX(0, "spdif_frac", "spdif_src", 0,
> +	COMPOSITE_FRACMUX(0, "spdif_frac", "spdif_src", CLK_SET_RATE_PARENT,
>  			RK3288_CLKSEL_CON(9), 0,
>  			RK3288_CLKGATE_CON(4), 5, GFLAGS,
> -		MUX(0, "spdif_mux", mux_spdif_p, 0,
> +		MUX(0, "spdif_mux", mux_spdif_p, CLK_SET_RATE_PARENT,
>  				RK3288_CLKSEL_CON(5), 8, 2, MFLAGS)),
> -	GATE(SCLK_SPDIF, "sclk_spdif", "spdif_mux", 0,
> +	GATE(SCLK_SPDIF, "sclk_spdif", "spdif_mux", CLK_SET_RATE_PARENT,
>  			RK3288_CLKGATE_CON(4), 6, GFLAGS),
> -	COMPOSITE_NOMUX(0, "spdif_8ch_pre", "spdif_src", 0,
> +	COMPOSITE_NOMUX(0, "spdif_8ch_pre", "spdif_src", CLK_SET_RATE_PARENT,
>  			RK3288_CLKSEL_CON(40), 0, 7, DFLAGS,
>  			RK3288_CLKGATE_CON(4), 7, GFLAGS),
> -	COMPOSITE_FRACMUX(0, "spdif_8ch_frac", "spdif_8ch_pre", 0,
> +	COMPOSITE_FRACMUX(0, "spdif_8ch_frac", "spdif_8ch_pre",
> CLK_SET_RATE_PARENT, RK3288_CLKSEL_CON(41), 0,
>  			RK3288_CLKGATE_CON(4), 8, GFLAGS,
> -		MUX(0, "spdif_8ch_mux", mux_spdif_8ch_p, 0,
> +		MUX(0, "spdif_8ch_mux", mux_spdif_8ch_p, CLK_SET_RATE_PARENT,
>  				RK3288_CLKSEL_CON(40), 8, 2, MFLAGS)),
> -	GATE(SCLK_SPDIF8CH, "sclk_spdif_8ch", "spdif_8ch_mux", 0,
> +	GATE(SCLK_SPDIF8CH, "sclk_spdif_8ch", "spdif_8ch_mux",
> CLK_SET_RATE_PARENT, RK3288_CLKGATE_CON(4), 9, GFLAGS),
> 
>  	GATE(0, "sclk_acc_efuse", "xin24m", 0,

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