On 19/10/20, Fabio Estevam wrote: > Hi Jorge, > > On Wed, Oct 14, 2020 at 10:07 AM Jorge Ramirez-Ortiz <jo...@foundries.io> > 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 <jo...@foundries.io> > > --- > > arch/arm/mach-imx/mx6/soc.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/arm/mach-imx/mx6/soc.c b/arch/arm/mach-imx/mx6/soc.c > > index e129286065..1da250bbcd 100644 > > --- a/arch/arm/mach-imx/mx6/soc.c > > +++ b/arch/arm/mach-imx/mx6/soc.c > > @@ -469,7 +469,7 @@ int arch_cpu_init(void) > > } > > > > /* Set perclk to source from OSC 24MHz */ > > - if (is_mx6sl()) > > + if (is_mx6sl() || is_mx6ull()) > > According to https://www.nxp.com/docs/en/errata/IMX6SDLCE.pdf the > mx6solo and mx6dl are also affected by ERR007805.
ah ok, I'll repost. just as background info, this is needed in order for OP-TEE to access the EdgeLock SE050 secure element at a decent speed. I couldnt merge the support for the imx6ul i2c driver during the last OP-TEE release but will try again when I find some time (surely before their next release) > > These variants should be handled too.