On 13 September 2015 at 21:22, Peter Crosthwaite <crosthwaitepe...@gmail.com> wrote: > On Sat, Sep 12, 2015 at 2:06 PM, Guenter Roeck <li...@roeck-us.net> wrote: >> The Linux kernel only accepts 333334 Khz and 666667 Khz clock rates, and >> may crash if the actual clock rate is too low. The clock rate used to be >> (ps-clk-frequency * 26 / 4), which resulted in a CPU frequency of >> 216666 Khz if ps-clk-frequency was set to 33333333 Hz. Change it to >> (ps-clk-frequency * 20 / 2) = 333333 Khz for to make Linux happy. >> Limit the change to Linux boots only. >> >> Signed-off-by: Guenter Roeck <li...@roeck-us.net> >> > > Reviewed-by: Peter Crosthwaite <crosthwaite.pe...@gmail.com> > > Can this go via target-arm? (cc PMM). > > There may be more changes worth making on is_linux. I don't have the > patch with the full list of FSBL-related SLCR changes handy and can't > seem to find it in any modern Yocto trees. Wondering if Yocto still > supports booting Zynq without FSBL (Nathan/Alistair may know more)?
I'd prefer us not to propagate lots of "only if Linux boot" changes into devices. The GIC *must* have these because the kernel can't configure it otherwise from non-secure mode. I'm not sure that applies here. thanks -- PMM
