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Enabling clock for all the lanes consumes power even PHY is active or inactive. To resolve this, enable/disable clocks in phy_init/phy_exit. By default clock is disabled for all the lanes. Whenever phy_init called from USB, SATA, or display driver, etc. It enabled the required clock for requested lane. On phy_exit cycle, it disabled clock for the active PHYs. During the suspend/resume cycle, each USB/ SATA/ display driver called phy_exit/phy_init individually. It disabled clock on exit, and enabled on initialization for the active PHYs. Signed-off-by: Piyush Mehta <piyush.mehta@amd.com> Link: https://lore.kernel.org/r/20230613140250.3018947-3-piyush.mehta@amd.com Signed-off-by: Vinod Koul <vkoul@kernel.org> |
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Kconfig | ||
Makefile | ||
phy-zynqmp.c |