Re: [PATCH v6 09/23] drm/rockchip: dw_hdmi: Add support for hclk

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Feb 17, 2022 at 03:35:08PM +0300, Dmitry Osipenko wrote:
> 17.02.2022 11:29, Sascha Hauer пишет:
> > The rk3568 HDMI has an additional clock that needs to be enabled for the
> > HDMI controller to work. The purpose of that clock is not clear. It is
> > named "hclk" in the downstream driver, so use the same name.
> 
> Have you checked that DSI works without the enabled hclk? I'd expect the
> whole VOP to be clock-gated.

No, I haven't checked that.

I am not sure where you aiming at. The HCLK_VOP is supplied to the vop2
as well and the vop2 driver also enables this clock. Still, when the
HDMI registers are accessed before the vop2 driver enables HCLK_VOP then
the system hangs, so the HDMI needs it also.

Sascha

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |



[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux