phy: rockchip: inno-hdmi: Add configure() and validate() ops

The commit 10ed34d6eaaf ("phy: Add HDMI configuration options")
introduced a way for HDMI PHYs to be configured through the generic
phy_configure() function.

This driver derives the TMDS character rate from the pixel clock and the
PHY bus width setting. However, no in-tree consumer of this PHY has ever
called phy_set_bus_width() to change the TMDS character rate as only
8-bit RGB output is supported by the HDMI display driver.

Add configure() and validate() ops to allow consumers to configure the
TMDS character rate using phy_configure(). Fallback to the deprecated
way of using the PHY bus width to configure the TMDS character rate.

A typical call chain during DRM modeset on a RK3328 device:

  dw_hdmi_rockchip_encoder_atomic_check():
  - inno_hdmi_phy_validate(): pixclock 148500000 tmdsclock 594000000

  dw_hdmi_rockchip_encoder_atomic_mode_set():
  - inno_hdmi_phy_configure(): pixclock 148500000
    - inno_hdmi_phy_validate(): pixclock 148500000 tmdsclock 594000000

  vop_crtc_atomic_enable():
  - inno_hdmi_phy_rk3328_clk_set_rate(): rate 594000000 tmdsclk 594000000
    inno_hdmi_phy_rk3328_clk_set_rate(): pixclock 594000000 tmdsclock 594000000
  - inno_hdmi_phy_rk3328_clk_recalc_rate(): pixclock 594000000 vco 594000000

  dw_hdmi_rockchip_encoder_enable():
  - inno_hdmi_phy_power_on(): Inno HDMI PHY Power On
    - inno_hdmi_phy_rk3328_clk_set_rate(): rate 594000000 tmdsclk 594000000

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Heiko Stuebner <heiko@sntech.de> #rk3328
Tested-by: Diederik de Haas <diederik@cknow-tech.com>  # Rock64
Link: https://patch.msgid.link/20260518180722.2480799-2-jonas@kwiboo.se
Signed-off-by: Vinod Koul <vkoul@kernel.org>

0 files changed, 0 insertions, 0 deletions