2019-07-24 08:02:01

by Anson Huang

Subject: [PATCH] clk: imx8mn: Keep uart clocks on for early console

From: Anson Huang <[email protected]>

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

Signed-off-by: Anson Huang <[email protected]>
---
drivers/clk/imx/clk-imx8mn.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c
index 07481a5..ecd1062 100644
--- a/drivers/clk/imx/clk-imx8mn.c
+++ b/drivers/clk/imx/clk-imx8mn.c
@@ -355,6 +355,14 @@ static const char * const imx8mn_clko2_sels[] = {"osc_24m", "sys_pll2_200m", "sy
static struct clk *clks[IMX8MN_CLK_END];
static struct clk_onecell_data clk_data;

+static struct clk ** const uart_clks[] = {
+ &clks[IMX8MN_CLK_UART1_ROOT],
+ &clks[IMX8MN_CLK_UART2_ROOT],
+ &clks[IMX8MN_CLK_UART3_ROOT],
+ &clks[IMX8MN_CLK_UART4_ROOT],
+ NULL
+};
+
static int imx8mn_clocks_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -612,6 +620,8 @@ static int imx8mn_clocks_probe(struct platform_device *pdev)
goto unregister_clks;
}

+ imx_register_uart_clocks(uart_clks);
+
return 0;

unregister_clks:
--
2.7.4

2019-07-26 08:41:05

by Abel Vesa

Subject: Re: [PATCH] clk: imx8mn: Keep uart clocks on for early console

On 19-07-24 15:50:17, [email protected] wrote:
> From: Anson Huang <[email protected]>
>
> Call imx_register_uart_clocks() API to keep uart clocks enabled
> when earlyprintk or earlycon is active.
>
> Signed-off-by: Anson Huang <[email protected]>

Reviewed-by: Abel Vesa <[email protected]>

> ---
> drivers/clk/imx/clk-imx8mn.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c
> index 07481a5..ecd1062 100644
> --- a/drivers/clk/imx/clk-imx8mn.c
> +++ b/drivers/clk/imx/clk-imx8mn.c
> @@ -355,6 +355,14 @@ static const char * const imx8mn_clko2_sels[] = {"osc_24m", "sys_pll2_200m", "sy
> static struct clk *clks[IMX8MN_CLK_END];
> static struct clk_onecell_data clk_data;
>
> +static struct clk ** const uart_clks[] = {
> + &clks[IMX8MN_CLK_UART1_ROOT],
> + &clks[IMX8MN_CLK_UART2_ROOT],
> + &clks[IMX8MN_CLK_UART3_ROOT],
> + &clks[IMX8MN_CLK_UART4_ROOT],
> + NULL
> +};
> +
> static int imx8mn_clocks_probe(struct platform_device *pdev)
> {
> struct device *dev = &pdev->dev;
> @@ -612,6 +620,8 @@ static int imx8mn_clocks_probe(struct platform_device *pdev)
> goto unregister_clks;
> }
>
> + imx_register_uart_clocks(uart_clks);
> +
> return 0;
>
> unregister_clks:
> --
> 2.7.4
>

2019-08-04 03:38:37

by Shawn Guo

Subject: Re: [PATCH] clk: imx8mn: Keep uart clocks on for early console

On Wed, Jul 24, 2019 at 03:50:17PM +0800, [email protected] wrote:
> From: Anson Huang <[email protected]>
>
> Call imx_register_uart_clocks() API to keep uart clocks enabled
> when earlyprintk or earlycon is active.
>
> Signed-off-by: Anson Huang <[email protected]>

Applied, thanks.