linux-kernel - [PATCH 00/12] Add HDMI 2.1 FRL support to phy-rockchip-samsung-hdptx

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Message-Id: <20250708-phy-hdptx-frl-v1-0-cfe096e224f4@collabora.com>
Date: Tue, 08 Jul 2025 22:35:41 +0300
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, 
 Heiko Stuebner <heiko@...ech.de>, Algea Cao <algea.cao@...k-chips.com>
Cc: kernel@...labora.com, linux-phy@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org
Subject: [PATCH 00/12] Add HDMI 2.1 FRL support to
 phy-rockchip-samsung-hdptx

The Samsung HDMI/eDP Transmitter Combo PHY is capable of handling four
HDMI 2.1 Fixed Rate Link (FRL) lanes, while each lane can operate at
3Gbps, 6Gbps, 8Gbps, 10Gbps or 12Gbps.

This patchset extends the HDMI PHY configuration API to manage the FRL
mode and provides all the required HDMI driver changes to enable FRL in
addition to the already supported TMDS mode.

The series also contains a few driver fixes/improvements that are not
directly related, but are not deemed critical enough to warrant separate
submission.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
Cristian Ciocaltea (12):
      phy: hdmi: Add HDMI 2.1 FRL configuration options
      phy: rockchip: samsung-hdptx: Reduce ROPLL loop bandwidth
      phy: rockchip: samsung-hdptx: Prevent Inter-Pair Skew from exceeding the limits
      phy: rockchip: samsung-hdptx: Use usleep_range() instead of udelay()
      phy: rockchip: samsung-hdptx: Fix coding style alignment
      phy: rockchip: samsung-hdptx: Consistently use [rk_]hdptx_[tmds_] prefixes
      phy: rockchip: samsung-hdptx: Enable lane output in common helper
      phy: rockchip: samsung-hdptx: Cleanup *_cmn_init_seq lists
      phy: rockchip: samsung-hdptx: Compute clk rate from PLL config
      phy: rockchip: samsung-hdptx: Switch to driver specific HDMI config
      phy: rockchip: samsung-hdptx: Extend rk_hdptx_phy_verify_hdmi_config() helper
      phy: rockchip: samsung-hdptx: Add HDMI 2.1 FRL support

 drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c | 652 ++++++++++++++++++----
 include/linux/phy/phy-hdmi.h                      |  14 +-
 include/linux/phy/phy.h                           |   3 +-
 3 files changed, 570 insertions(+), 99 deletions(-)
---
base-commit: 8d6c58332c7a8ba025fcfa76888b6c37dbce9633
change-id: 20250708-phy-hdptx-frl-fc3377db9f2e