[PATCH v2 1/1] clk: imx6ul: retain early UART clocks during kernel init

[Peng Fan]

On 4/21/2023 7:55 PM, Alexander Stein wrote:
> Make sure to keep UART clocks enabled during kernel init if
> earlyprintk or earlycon are active.
> 
> Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>

Reviewed-by: Peng Fan <peng.fan at nxp.com>

> ---
> Changes in v2:
> * Rebased to next-20230420
> 
> Apparently i.MX6UL was missed in commit 0822f933735c ("clk: imx6: retain
> early UART clocks during kernel init"). But as commit 379c9a24cc23 ("clk:
> imx: Fix reparenting of UARTs not associated with stdout") changes the
> calling signature it's not warranting a Fixes for the old commit.
> 
>   drivers/clk/imx/clk-imx6ul.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/clk/imx/clk-imx6ul.c b/drivers/clk/imx/clk-imx6ul.c
> index e3696a88b5a3..f9394e94f69d 100644
> --- a/drivers/clk/imx/clk-imx6ul.c
> +++ b/drivers/clk/imx/clk-imx6ul.c
> @@ -544,6 +544,8 @@ static void __init imx6ul_clocks_init(struct device_node *ccm_node)
>   
>   	clk_set_parent(hws[IMX6UL_CLK_ENET1_REF_SEL]->clk, hws[IMX6UL_CLK_ENET_REF]->clk);
>   	clk_set_parent(hws[IMX6UL_CLK_ENET2_REF_SEL]->clk, hws[IMX6UL_CLK_ENET2_REF]->clk);
> +
> +	imx_register_uart_clocks();
>   }
>   
>   CLK_OF_DECLARE(imx6ul, "fsl,imx6ul-ccm", imx6ul_clocks_init);