[PATCH 2/2] clk: imx8mq: Keep uart clocks on during system boot

[Anson . Huang]

From: Anson Huang <Anson.Huang@xxxxxxx>

Call imx_register_uart_clocks() API to keep uart clocks enabled
when earlyprintk or earlycon is active.

Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
---
 drivers/clk/imx/clk-imx8mq.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/clk/imx/clk-imx8mq.c b/drivers/clk/imx/clk-imx8mq.c
index 5fbc2a7..d407a07 100644
--- a/drivers/clk/imx/clk-imx8mq.c
+++ b/drivers/clk/imx/clk-imx8mq.c
@@ -272,6 +272,14 @@ static const char * const imx8mq_clko2_sels[] = {"osc_25m", "sys2_pll_200m", "sy
 
 static struct clk_onecell_data clk_data;
 
+static struct clk ** const uart_clks[] = {
+	&clks[IMX8MQ_CLK_UART1_ROOT],
+	&clks[IMX8MQ_CLK_UART2_ROOT],
+	&clks[IMX8MQ_CLK_UART3_ROOT],
+	&clks[IMX8MQ_CLK_UART4_ROOT],
+	NULL
+};
+
 static int imx8mq_clocks_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -555,6 +563,8 @@ static int imx8mq_clocks_probe(struct platform_device *pdev)
 	err = of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
 	WARN_ON(err);
 
+	imx_register_uart_clocks(uart_clks);
+
 	return err;
 }
 
-- 
2.7.4