Am Sonntag, 13. Oktober 2024, 21:58:41 CEST schrieb Dragan Simic:
> Hello Heiko,
>
> On 2024-09-06 10:25, Heiko Stuebner wrote:
> > Rockchip boards with PCIe3 controllers inside the soc (rk3568, rk3588)
> > have
> > external oscillators on the board to generate the needed 100MHz
> > reference
> > clock the PCIe3 controller needs.
> >
> > Often these clock generators need supplies to be enabled to run.
> >
> > Modelling this clock has taken a number of shapes:
> > - The rk3568 Rock-3a modelled the generator-regulator as "phy-supply"
> > [0]
> > &pcie30phy {
> > phy-supply = <&vcc3v3_pi6c_03>;
> > status = "okay";
> > };
> > which is of course not part of the binding
> >
> > - On the Rock-5-ITX the supply of the clock generator is controlled by
> > the same gpio as the regulator supplying the the port connected to
> > the
> > pcie30x4 controller, so if this controller probes first, both
> > controllers will just run. But if the pcie30x2 controller probes
> > first
> > (which has a different supply), the controller will stall at the
> > first
> > dbi read.
> >
> > There are other types too, where an 25MHz oscillator supplies a PLL
> > chip like the diodes,pi6c557 used on Theobroma Jaguar and Tiger boards.
> >
> > As we established in v1 [1], these are essentially different types, so
> > this series attempts to solve the first case of "voltage controlled
> > oscillators" as Stephen called them.
> >
> > With the discussion in v2, gated-fixed-clock was deemed one possible
> > nice naming, so I did go with that.
>
> Thanks, I find "gated-fixed-clock" a much better choice.
>
> > Stephen also suggested reusing more of clk-gpio to not re-implement the
> > gpio handling wrt. sleeping and non-sleeping gpios.
> >
> > Though instead of exporting masses of structs and ops,
> > gated-fixed-clock
> > is quite close to the other gpio-clocks, so I've put it into the
> > clk-gpio
> > file.
>
> Just checking, what's the current state of this patch series?
> Would another review help with getting it accepted?
I guess me needing to ping Stephen to look at it now that the
merge window is done ;-) .
In the previous version he sounded ok with the naming, so hopefully
it'll just need a tiny ping.
Heiko
