Hello. On 2/10/2015 2:46 PM, Krzysztof Kozlowski wrote:
All the device nodes for the Exynos5420 power-domains have a quite generic "power-domain" name.
And this is in conformance to the ePAPR standard.
True, I forgot that the ePAPR recommends that the node names should be somewhat generic but OTOH this is the only Exynos DTSI file that follows the standard for the power domain device nodes. All other Exynos DTSI use a prefix to differentiate between each power domain.
So in case of an error, the Exynos PD driver shows the following (not very useful) message:
"Power domain power-domain disable failed"
Why not fix the message instead to use the full device name?
Well, the full node name is also not very useful IMHO since you have to check the DTSI or SoC manual to map the device node unit-address to the corresponding power domain.
I used $subject when debugging an HDMI issue and instead of dropping it, I just posted it in case someone considered useful. I don't really mind if the patch is nacked / not picked.
Additionally (on Arndale Octa):
$ cat /sys/kernel/debug/pm_genpd/pm_genpd_summary domain status slaves /device runtime status ---------------------------------------------------------------------- power-domain on /devices/platform/amba/3880000.adma suspended power-domain off power-domain off power-domain off power-domain off power-domain off
This really is not helpful. From the power domain debugfs code it is complicated to extract of_node of power domain.
You shouldn't need it.
It is easier to print the name of power domain. But wait... all names are the same! :) So why do we have the name in the first place?
I'm not sure why the full platform device names aren't printed -- they should all be different.
WBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html