Re: [PATCH 00/15] drm/msm/hdmi & phy: use generic PHY framework

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On 23/05/2023 15:14, Dmitry Baryshkov wrote:
The MSM HDMI PHYs have been using the ad-hoc approach / API instead of
using the generic API framework. Move all the PHYs to
drivers/phy/qualcomm and rework them to use generic PHY framework. This
way all the QMP-related code is kept close. Also in future this will
allow us to use a common set of functions to setup msm8974 HDMI PHY,
28nm DSI PHY and apq8964 SATA PHY (which all use UNI PLL internally).

This also causes some design changes. Currently on msm8996 the HDMI PLL
implements clock's set_rate(), while other HDMI PHY drivers used the
ad-hoc PHY API for setting the PLL rate (this includes in-tree msm8960
driver and posted, but not merged, msm8974 driver). This might result in
the PLL being set to one rate, while the rest of the PHY being tuned to
work at another rate. Adopt the latter idea and always use
phy_configure() to tune the PHY and set the PLL rate.

Forgot to mention that this also features msm8974 HDMI PLL code, so modeswitching HDMI output on msm8974 is now possible.
--
With best wishes
Dmitry




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