[PATCH] mx6: peripheral clock from oscillator

[Jorge Ramirez-Ortiz, Foundries]

On 19/10/20, Jorge Ramirez-Ortiz wrote:
> In order to be able to run the I2C bus at 400Khz, the chip errata[1]
> recommends that the peripheral clock runs out of the 24MHz oscillator.
> 
> [1] Rev 2, 10/2019, ERR007805
> 
> Signed-off-by: Jorge Ramirez-Ortiz <jorge at foundries.io>
> ---
>  arch/arm/mach-imx/mx6/soc.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-imx/mx6/soc.c b/arch/arm/mach-imx/mx6/soc.c
> index e129286065..f498c93b00 100644
> --- a/arch/arm/mach-imx/mx6/soc.c
> +++ b/arch/arm/mach-imx/mx6/soc.c
> @@ -26,6 +26,8 @@
>  #include <imx_thermal.h>
>  #include <mmc.h>
>  
> +#define ERRATA_ERR007805 (is_mx6dl() || is_mx6solo() || is_mx6ull())
> +
>  struct scu_regs {
>  	u32	ctrl;
>  	u32	config;
> @@ -469,7 +471,7 @@ int arch_cpu_init(void)
>  	}
>  
>  	/* Set perclk to source from OSC 24MHz */
> -	if (is_mx6sl())
> +	if (is_mx6sl() || ERRATA_ERR007805)
>  		setbits_le32(&ccm->cscmr1, MXC_CCM_CSCMR1_PER_CLK_SEL_MASK);
>  
>  	imx_wdog_disable_powerdown(); /* Disable PDE bit of WMCR register */
> --


all ok with this ?

> 2.17.1
>