Hi Maxim,
On Fri, Apr 21, 2023 at 10:33:19PM +0300, Maxim Kochetkov wrote:
Some SoC may have resets for I2S subsystem. So add optional reset deassert at startup.
Signed-off-by: Maxim Kochetkov fido_max@inbox.ru
sound/soc/dwc/dwc-i2s.c | 9 +++++++++ sound/soc/dwc/local.h | 1 + 2 files changed, 10 insertions(+)
diff --git a/sound/soc/dwc/dwc-i2s.c b/sound/soc/dwc/dwc-i2s.c index acdf98b2ee9c..8c8bc7116f86 100644 --- a/sound/soc/dwc/dwc-i2s.c +++ b/sound/soc/dwc/dwc-i2s.c @@ -17,6 +17,7 @@ #include <linux/io.h> #include <linux/interrupt.h> #include <linux/module.h> +#include <linux/reset.h> #include <linux/slab.h> #include <linux/pm_runtime.h> #include <sound/designware_i2s.h> @@ -648,6 +649,14 @@ static int dw_i2s_probe(struct platform_device *pdev) if (IS_ERR(dev->i2s_base)) return PTR_ERR(dev->i2s_base);
- dev->reset = devm_reset_control_array_get_optional_shared(&pdev->dev);
- if (IS_ERR(dev->reset))
return PTR_ERR(dev->reset);- ret = reset_control_deassert(dev->reset);
Since this is a shared reset control, matching reset_control_assert() calls are required in the subsequent error paths and in dw_i2s_remove().
regards Philipp