uart: 8250: add reset operation in runtime PM

add reset operation in runtime PM Signed-off-by: William Qiu <william.qiu@starfivetech.com>
2023-09-20 17:19:59 +08:00
parent 77365cc40a
commit 9e82665e2f
1 changed files with 4 additions and 0 deletions
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -730,6 +730,8 @@ static int dw8250_runtime_suspend(struct device *dev)
 {
 	struct dw8250_data *data = dev_get_drvdata(dev);

+	reset_control_assert(data->rst);
+
 	clk_disable_unprepare(data->clk);

 	clk_disable_unprepare(data->pclk);
@@ -745,6 +747,8 @@ static int dw8250_runtime_resume(struct device *dev)

 	clk_prepare_enable(data->clk);

+	reset_control_deassert(data->rst);
+
 	return 0;
 }