Hi Ben,
On Tue, Sep 28, 2010 at 19:31:02, Ben Gardiner wrote:
On Fri, Sep 24, 2010 at 1:10 AM, Nori, Sekhar nsekhar@ti.com wrote:
Hello All,
On Fri, Aug 27, 2010 at 10:44:58, Nori, Sekhar wrote:
The TI DA850/OMAP-L138/AM18x EVM can be populated with devices having different maximum allowed CPU clock rating.
The maximum clock the chip can support can only be determined from the label on the package (not software readable).
Introduce a method to pass the maximum allowed clock rate information to kernel using ATAG_REVISION. The kernel uses this information to determine the maximum cpu clock rate reachable using cpufreq.
Note that U-Boot itself does not set the CPU clock rate. The CPU clock is setup by a primary bootloader ("UBL"). The rate setup by UBL could be different from the maximum clock rate supported by the device.
Any more feedback on this patch? There are couple of kernel patches which depend on this, that's why I ask.
FWIW: it's fine with me.
Applies cleanly to 3df61957938586c512c17e72d83551d190400981 of u-boot/next.
Tested on da850evm -- bootm of linux uImage works with the patch 'da850evm: fix linux bootparam address' aplied.
The kernel uImage used did not have support for parsing the ATAG_REVISION information since that patch has not been posted to the davinci-linux list.
Tested-by: Ben Gardiner bengardiner@nanometrics.ca
Thanks for the testing!
Regards, Sekhar