Re: [PATCH v4 2/8] clk: qcom: ipq5332: enable few nssnoc clocks in driver probe

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On 2/16/2024 10:46 PM, Andrew Lunn wrote:
You can get the source at https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot-2016/-/tree/NHSS.QSDK.12.2?ref_type=heads

Cool, thanks. But is it really u-boot from 2016?


Yes, it is. If you want to try on IPQ95xx / IPQ53xx SoCs, you can also use the 2023's u-boot, which is available at [1].

[1] https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot/-/tree/NHSS.QSDK.12.4.5?ref_type=heads


Yeah agree with your comments.

QSDK's u-boot enables the network support, so the required NSSCC clocks are
turned ON and left it in ON state. CCF tries to disables the unused NSSCC
clocks but system goes for reboot.

Reason being, to access the NSSCC clocks, these GCC clocks
(gcc_snoc_nssnoc_clk, gcc_snoc_nssnoc_1_clk, gcc_nssnoc_nsscc_clk)
should be turned ON. But CCF disables these clocks as well due to the lack
of consumer.

So there is your solution, make NSSCC a consumer of the clocks it
actually consumes. If it needs these clocks, it should get and enable
them.


Thanks for the suggestion. I will include these clocks in NSSCC DT node and enable the same in the NSSCC driver probe.


	Andrew




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