2018-05-16 0:44 GMT+02:00 Adam Ford <aford...@gmail.com>:
> On Tue, May 15, 2018 at 4:25 AM, Bartosz Golaszewski <b...@bgdev.pl> wrote:
>> 2018-05-14 2:40 GMT+02:00 Adam Ford <aford...@gmail.com>:
>>> On Wed, May 9, 2018 at 12:25 PM, David Lechner <da...@lechnology.com> wrote:
>>>> This series converts mach-davinci to use the common clock framework.
>>>> The series works like this, the first 3 patches fix some issues with the
>>>> drivers that have already been accepted into the mainline kernel.
>>>> Then, starting with "ARM: davinci: pass clock as parameter to
>>>> davinci_timer_init()", we get the mach code ready for the switch by adding
>>>> code needed for the new clock drivers and adding #ifndef CONFIG_COMMON_CLK
>>>> around the legacy clocks so that we can switch easily between the old and
>>>> "ARM: davinci: switch to common clock framework" actually flips the switch
>>>> to start using the new clock drivers. Then the next 8 patches remove all
>>>> of the old clock code.
>>>> The final four patches add device tree clock support to the one SoC that
>>>> supports it.
>>>> This series has been tested on TI OMAP-L138 LCDK (both device tree and
>>>> board file).
>>> I am not sure if I did something wrong, but I attempted to build and I
>>> wasn't able to boot the da850-evm.dtb your repo common-clk-v11,
>>> however the legacy board file boot was OK.
>>> make davinci_all_defconfig ARCH=arm
>>> make zImage modules da850-evm.dtb ARCH=arm CROSS_COMPILE=arm-linux- -j8
>>> 3140416 bytes read in 1464 ms (2 MiB/s)
>>> 20353 bytes read in 15 ms (1.3 MiB/s)
>>> ## Flattened Device Tree blob at c0600000
>>> Booting using the fdt blob at 0xc0600000
>>> Loading Device Tree to c7e57000, end c7e5ef80 ... OK
>>> Starting kernel ...
>>> Uncompressing Linux... done, booting the kernel.
>>> (and hang)
>>> If you have some suggestions, I am try them as I get time.
>> Runs fine on da850-lcdk and dm365-evm. I'll test the da850-evm
>> tomorrow when I'll have access to it.
> I set the bootargs to: bootargs=console=ttyS2,115200n8
> clk_ignore_unused root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait
> I enabled DEBUG_LL and EARLY_PRINTK, yet when it loads, I only get:
> ## Flattened Device Tree blob at c0600000
> Booting using the fdt blob at 0xc0600000
> Loading Device Tree to c7e57000, end c7e5ef35 ... OK
> Starting kernel ...
> Uncompressing Linux... done, booting the kernel.
> I am doing this at my home, so I don't have a debugger for the
> DA850-EVM. I am using a SOM that is an AM1808, but I vaguely remember
> something about enabling a DSP clock somewhere, but I cannot seem to
> find the e-mail. I know its counter intuitive that we'd need to
> enable a clock that runs the DSP since it doesn't exist on the AM1808,
> but I would have thought the clk_ignore_unused would have worked
> around that issue.
> If someone else has a DA850-EVM or suggestions, I'm willing to try
> them as I have time.
everything works fine for me both when booting the DTB and in legacy
mode on da850-evm.
I'm using the following bootargs:
ip=dhcp console=ttyS2,115200n8 root=/dev/nfs rw nfsroot=<snip!>,v3
Regular davinci_all_defconfig on David's common-clk-v11 branch.