clk: sunxi: error checking on clock setup
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Cover letter [PATCH v2 0/3] clk: sunxi: error checking on clock setup
Hi,
Quoted 15 lines · Andre Przywara
Setting up the clocks properly is quite critical to the system's operation, but currently our error handling is not very verbose. This series adds error handling and reporting to the sunxi clocks, so that any errors are correctly detected and reported. Also previous actions are rolled back in case something went wrong.
This proves to be helpful in debugging clock tree issues, especially when adding support for new SoCs.
I tested this on a BananaPi by deliberately misspelling "clock-output-names". The resulting kernel crash insun4i_timer_interruptis totally misleading, but now there is a line in the dmesg before saying:
=======sunxi_divider_clk_setup: could not read clock-output-names for "apb0"
=======
Quoted 1 line
This applies on top of Maxime's sunxi/for-next branch.
Applied all three, thanks!
Maxime
Signature · 10 lines
Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20160221/2d339957/attachment.sig>