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Subject[PATCH 2/2] clk: imx8mq: Keep uart clocks on during system boot
Date
From: Anson Huang <Anson.Huang@nxp.com>

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

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
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
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