[PATCH 0/2] Fixup HDMI PLL for phy-rockchip-samsung-hdptx

Cristian Ciocaltea cristian.ciocaltea at collabora.com
Wed Dec 3 15:54:08 PST 2025


The Samsung HDMI/eDP TX PHY is currently not able to provide an accurate
enough PLL output frequency to match the TMDS rate of a 1080p at 120Hz
display mode, when used with 10 bpc RGB.

This patch set adds a new entry to the TMDS configuration table,
providing the necessary frequency division coefficients for the PHY PLL
to generate the expected 461.101250 MHz output.

Additionally, it drops a bunch of unused members from struct
ropll_config and makes the configuration table more readable.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
---
Cristian Ciocaltea (2):
      phy: rockchip: samsung-hdptx: Pre-compute HDMI PLL config for 461.10125 MHz output
      phy: rockchip: samsung-hdptx: Cleanup TMDS PLL config table

 drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c | 79 +++++++----------------
 1 file changed, 24 insertions(+), 55 deletions(-)
---
base-commit: b2c27842ba853508b0da00187a7508eb3a96c8f7
change-id: 20251204-phy-hdptx-pll-fix-0787c92e0cfe




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