08.01.2020 07:24, Sowjanya Komatineni пишет: > This patch series moves Tegra PMC clocks from clock driver to pmc driver > along with the device trees changes and audio driver which uses one of > the pmc clock for audio mclk. > > Tegra PMC has clk_out_1, clk_out_2, clk_out_3 and blink controls which > are currently registered by Tegra clock driver using clk_regiser_mux and > clk_register_gate which performs direct Tegra PMC register access. > > When Tegra PMC is in secure mode, any access from non-secure world will > not go through. > > This patch series adds these Tegra PMC clocks and blink controls to Tegra > PMC driver with PMC as clock provider and removes them from Tegra clock > driver. > > PMC clock clk_out_1 is dedicated for audio mclk from Tegra30 thru Tegra210 > and clock driver does inital parent configuration for it and enables them. > But this clock should be taken care by audio driver as there is no need > to have this clock pre enabled. > > So, this series also includes patch that updates ASoC driver to take > care of parent configuration for mclk if device tree don't specify > initial parent configuration using assigned-clock-parents and controls > audio mclk enable/disable during ASoC machine startup and shutdown. > > DTs are also updated to use clk_out_1 as audio mclk rather than extern1. > > This series also includes a patch for mclk fallback to extern1 when > retrieving mclk fails to have this backward compatible of new DT with > old kernels. Suspend-resume doesn't work anymore, reverting this series helps. I don't have any other information yet, please take a look.
