[PATCH 0/7] Power down serdes lanes and CMUs initially

Vinod Koul vkoul at kernel.org
Mon May 8 04:43:16 PDT 2023


On 17-04-23, 20:03, Daniel Machon wrote:
> This patch series aims to lower the power consumption of the Sparx5
> switch chip, by configuring optimal quiet mode for serdes lanes, as well
> as powering down unused CMUs (Clock Multiplier Unit). Before this series,
> serdes lane quiet mode were not optimally configured, and all the CMUs were
> powered on by default. This uses needless power.
> 
> Each serdes lane is provided a CMU clock, depending on the serdes mode
> and the serdes index. CMUs will now be powered on individually, when
> needed. The amount of power saved varies, depending on the port
> configuration. As a reference, this change saves about 1W on
> sparx5_pcb135 and 2W on sparx5_pcb134.

Applied, thanks

-- 
~Vinod



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