[U-Boot] [PATCH 4/5] imx: mx6sx: select OSC as uart's clk parent

[Stefano Babic]

Hi Peng,

this is orthogonal in the pathcset. I apply this even if I have not
applied 2-3.

On 08/08/2017 10:21, Peng Fan wrote:
> As M4 is sourcing UART clk from OSC, to make UART work
> when M4 is enabled, need to select OSC as clk parent,
> 24M OSC is enough for debug UART in uboot.
> 
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Fabio Estevam <fabio.estevam at nxp.com>
> ---
>  arch/arm/mach-imx/mx6/soc.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/mx6/soc.c b/arch/arm/mach-imx/mx6/soc.c
> index e2ecc3a..b4ec11a 100644
> --- a/arch/arm/mach-imx/mx6/soc.c
> +++ b/arch/arm/mach-imx/mx6/soc.c
> @@ -364,6 +364,7 @@ int arch_cpu_init(void)
>  {
>  	struct sched_ctrl_regs *regs =
>  		(struct sched_ctrl_regs *)MF2_SCHED_BASE_ADDR;
> +	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
>  
>  	init_aips();
>  
> @@ -434,6 +435,9 @@ int arch_cpu_init(void)
>  
>  	imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */
>  
> +	if (is_mx6sx())
> +		setbits_le32(&ccm->cscdr1, MXC_CCM_CSCDR1_UART_CLK_SEL);
> +
>  	/*
>  	 * To resolve USB camera bandwidth issue, the patch sets
>  	 * recommended AQoS setting from IC team value for peripheral
> 



Applied to u-boot-imx, -master, thanks !

Best regards,
Stefano Babic



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