rk3399 mipi phy force stop mode

[Mika Penttilä]

Hi,

We are developing a custom rk3399 based board. We have a need for the
MIPI phy data lanes to come up in stop (LP-11) mode and stay there until
commanded. We are interfacing a TI SN65DSI84 mipi to lvds bridge, and it
demands the data lanes to stay in LP-11 state for the time of the
initialization.

What we see now, is that data lines come out of LP-11 before the bridge
has configured itself, which leads to bridge malfunction.

I have tried to add RK3399_DSI1_FORCETXSTOPMODE to
dw-mipi-dsi-rockchip.c like this :

        .lanecfg1 = HIWORD_UPDATE(RK3399_DSI1_FORCETXSTOPMODE,
                    RK3399_DSI1_TURNDISABLE |
                    RK3399_DSI1_FORCETXSTOPMODE |
                    RK3399_DSI1_FORCERXMODE |
                    RK3399_DSI1_ENABLE),

but this doesn't do the trick. How could we put the stop mode on, and
after bridge config, get rid of it?

Thanks,
Mika Penttilä
Nextfour Group


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