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

Hi Aidan,

On 2022/7/9 上午12:02, Aidan MacDonald wrote:

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@gmail.com

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", };

Since JZ4760, according to the description of the I2SCDR register, Ingenic SoCs no longer use PLL/2 clock, but directly use PLL clock, so it seems also inappropriate to use "pll half" for these SoCs.

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", };

Same here.

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", };

Same here.

Thanks and best regards!

static const struct snd_soc_component_driver jz4740_i2s_component = {