linux-kernel - Re: [PATCH v4 07/11] ASoC: jz4740-i2s: Make the PLL clock name SoC-specific

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Message-Id: <9DIBFR.JZ9UUTMAK40G1@crapouillou.net>
Date:   Wed, 20 Jul 2022 12:53:33 +0100
From:   Paul Cercueil <paul@...pouillou.net>
To:     Aidan MacDonald <aidanmacdonald.0x0@...il.com>
Cc:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, linux-mips@...r.kernel.org,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 07/11] ASoC: jz4740-i2s: Make the PLL clock name
 SoC-specific

Hi Aidan,

Le ven., juil. 8 2022 at 17:02:40 +0100, Aidan MacDonald 
<aidanmacdonald.0x0@...il.com> a écrit :
> On some Ingenic SoCs, such as the X1000, there is a programmable
> divider used to generate the I2S system clock from a PLL, rather
> than a fixed PLL/2 clock. It doesn't make much sense to call the
> clock "pll half" on those SoCs, so the clock name should really be
> a SoC-dependent value.
> 
> Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com>

Reviewed-by: Paul Cercueil <paul@...pouillou.net>

Cheers,
-Paul

> ---
>  sound/soc/jz4740/jz4740-i2s.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/sound/soc/jz4740/jz4740-i2s.c 
> b/sound/soc/jz4740/jz4740-i2s.c
> index 0dcc658b3784..a41398c24d0e 100644
> --- a/sound/soc/jz4740/jz4740-i2s.c
> +++ b/sound/soc/jz4740/jz4740-i2s.c
> @@ -75,6 +75,8 @@ struct i2s_soc_info {
>  	struct reg_field field_i2sdiv_capture;
>  	struct reg_field field_i2sdiv_playback;
> 
> +	const char *pll_clk_name;
> +
>  	bool shared_fifo_flush;
>  };
> 
> @@ -281,7 +283,7 @@ static int jz4740_i2s_set_sysclk(struct 
> snd_soc_dai *dai, int clk_id,
>  		clk_set_parent(i2s->clk_i2s, parent);
>  		break;
>  	case JZ4740_I2S_CLKSRC_PLL:
> -		parent = clk_get(NULL, "pll half");
> +		parent = clk_get(NULL, i2s->soc_info->pll_clk_name);
>  		if (IS_ERR(parent))
>  			return PTR_ERR(parent);
>  		clk_set_parent(i2s->clk_i2s, parent);
> @@ -400,6 +402,7 @@ static const struct i2s_soc_info 
> jz4740_i2s_soc_info = {
>  	.field_tx_fifo_thresh	= REG_FIELD(JZ_REG_AIC_CONF, 8, 11),
>  	.field_i2sdiv_capture	= REG_FIELD(JZ_REG_AIC_CLK_DIV, 0, 3),
>  	.field_i2sdiv_playback	= REG_FIELD(JZ_REG_AIC_CLK_DIV, 0, 3),
> +	.pll_clk_name		= "pll half",
>  	.shared_fifo_flush	= true,
>  };
> 
> @@ -409,6 +412,7 @@ static const struct i2s_soc_info 
> jz4760_i2s_soc_info = {
>  	.field_tx_fifo_thresh	= REG_FIELD(JZ_REG_AIC_CONF, 16, 20),
>  	.field_i2sdiv_capture	= REG_FIELD(JZ_REG_AIC_CLK_DIV, 0, 3),
>  	.field_i2sdiv_playback	= REG_FIELD(JZ_REG_AIC_CLK_DIV, 0, 3),
> +	.pll_clk_name		= "pll half",
>  };
> 
>  static struct snd_soc_dai_driver jz4770_i2s_dai = {
> @@ -435,6 +439,7 @@ static const struct i2s_soc_info 
> jz4770_i2s_soc_info = {
>  	.field_tx_fifo_thresh	= REG_FIELD(JZ_REG_AIC_CONF, 16, 20),
>  	.field_i2sdiv_capture	= REG_FIELD(JZ_REG_AIC_CLK_DIV, 8, 11),
>  	.field_i2sdiv_playback	= REG_FIELD(JZ_REG_AIC_CLK_DIV, 0, 3),
> +	.pll_clk_name		= "pll half",
>  };
> 
>  static const struct i2s_soc_info jz4780_i2s_soc_info = {
> @@ -443,6 +448,7 @@ static const struct i2s_soc_info 
> jz4780_i2s_soc_info = {
>  	.field_tx_fifo_thresh	= REG_FIELD(JZ_REG_AIC_CONF, 16, 20),
>  	.field_i2sdiv_capture	= REG_FIELD(JZ_REG_AIC_CLK_DIV, 8, 11),
>  	.field_i2sdiv_playback	= REG_FIELD(JZ_REG_AIC_CLK_DIV, 0, 3),
> +	.pll_clk_name		= "pll half",
>  };
> 
>  static const struct snd_soc_component_driver jz4740_i2s_component = {
> --
> 2.35.1
>