[PATCH v2] ASoC: fsl-asoc-card: Get "extal" clock rate by clk_get_rate
On some platform(.e.g. i.MX8QM MEK), the "extal" clock is different with the mclk of codec, then the clock rate is also different. So it is better to get clock rate of "extal" rate by clk_get_rate, don't reuse the clock rate of mclk.
Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- changes in v2 - add defer probe handler
sound/soc/fsl/fsl-asoc-card.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c index 52adedc03245..32f8f756e6bb 100644 --- a/sound/soc/fsl/fsl-asoc-card.c +++ b/sound/soc/fsl/fsl-asoc-card.c @@ -696,6 +696,17 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) goto asrc_fail; } } else if (of_node_name_eq(cpu_np, "esai")) { + struct clk *esai_clk = clk_get(&cpu_pdev->dev, "extal"); + + if (!IS_ERR(esai_clk)) { + priv->cpu_priv.sysclk_freq[TX] = clk_get_rate(esai_clk); + priv->cpu_priv.sysclk_freq[RX] = clk_get_rate(esai_clk); + clk_put(esai_clk); + } else if (PTR_ERR(esai_clk) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto asrc_fail; + } + priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL; priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL; } else if (of_node_name_eq(cpu_np, "sai")) {
On Mon, Aug 10, 2020 at 04:11:43PM +0800, Shengjiu Wang wrote:
On some platform(.e.g. i.MX8QM MEK), the "extal" clock is different with the mclk of codec, then the clock rate is also different. So it is better to get clock rate of "extal" rate by clk_get_rate, don't reuse the clock rate of mclk.
Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com
changes in v2
- add defer probe handler
sound/soc/fsl/fsl-asoc-card.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c index 52adedc03245..32f8f756e6bb 100644 --- a/sound/soc/fsl/fsl-asoc-card.c +++ b/sound/soc/fsl/fsl-asoc-card.c @@ -696,6 +696,17 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) goto asrc_fail; } } else if (of_node_name_eq(cpu_np, "esai")) {
struct clk *esai_clk = clk_get(&cpu_pdev->dev, "extal");if (!IS_ERR(esai_clk)) {priv->cpu_priv.sysclk_freq[TX] = clk_get_rate(esai_clk);priv->cpu_priv.sysclk_freq[RX] = clk_get_rate(esai_clk);
Will it break existing imx-audio-cs42888 on older i.MX platforms? 'cause it overwrites cpu_priv.sysclk_freq[] that are set in "card configurations" section.
On Mon, Aug 10, 2020 at 4:39 PM Nicolin Chen nicoleotsuka@gmail.com wrote:
On Mon, Aug 10, 2020 at 04:11:43PM +0800, Shengjiu Wang wrote:
On some platform(.e.g. i.MX8QM MEK), the "extal" clock is different with the mclk of codec, then the clock rate is also different. So it is better to get clock rate of "extal" rate by clk_get_rate, don't reuse the clock rate of mclk.
Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com
changes in v2
- add defer probe handler
sound/soc/fsl/fsl-asoc-card.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c index 52adedc03245..32f8f756e6bb 100644 --- a/sound/soc/fsl/fsl-asoc-card.c +++ b/sound/soc/fsl/fsl-asoc-card.c @@ -696,6 +696,17 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) goto asrc_fail; } } else if (of_node_name_eq(cpu_np, "esai")) {
struct clk *esai_clk = clk_get(&cpu_pdev->dev, "extal");if (!IS_ERR(esai_clk)) {priv->cpu_priv.sysclk_freq[TX] = clk_get_rate(esai_clk);priv->cpu_priv.sysclk_freq[RX] = clk_get_rate(esai_clk);Will it break existing imx-audio-cs42888 on older i.MX platforms? 'cause it overwrites cpu_priv.sysclk_freq[] that are set in "card configurations" section.
Tested, no break for imx6.
best regards wang shengjiu
On Mon, Aug 10, 2020 at 04:11:43PM +0800, Shengjiu Wang wrote:
On some platform(.e.g. i.MX8QM MEK), the "extal" clock is different with the mclk of codec, then the clock rate is also different. So it is better to get clock rate of "extal" rate by clk_get_rate, don't reuse the clock rate of mclk.
Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com
Acked-by: Nicolin Chen nicoleotsuka@gmail.com
On Mon, 10 Aug 2020 16:11:43 +0800, Shengjiu Wang wrote:
On some platform(.e.g. i.MX8QM MEK), the "extal" clock is different with the mclk of codec, then the clock rate is also different. So it is better to get clock rate of "extal" rate by clk_get_rate, don't reuse the clock rate of mclk.
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: fsl-asoc-card: Get "extal" clock rate by clk_get_rate commit: a8fd5ca8016948a611bff62b0990ade9e1f8e83c
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
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Thanks, Mark
participants (4)
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Mark Brown -
Nicolin Chen -
Shengjiu Wang -
Shengjiu Wang