linux-kernel - [PATCH v3 0/2] Add new phy_notify

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Message-Id: <20250813-phy-notify-pmstate-v3-0-3bda59055dd3@linaro.org>
Date: Wed, 13 Aug 2025 16:00:45 +0100
From: Peter Griffin <peter.griffin@...aro.org>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, 
 André Draszik <andre.draszik@...aro.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Krzysztof Kozlowski <krzk@...nel.org>
Cc: linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
 kernel-team@...roid.com, William Mcvicker <willmcvicker@...gle.com>, 
 Manivannan Sadhasivam <mani@...nel.org>, neil.armstrong@...aro.org, 
 Peter Griffin <peter.griffin@...aro.org>
Subject: [PATCH v3 0/2] Add new phy_notify_state() api

This series adds a new phy_notify_state() API to the phy subsystem. It is
designed to be used when some specific runtime configuration parameters
need to be changed when transitioning to the desired state which can't be
handled by phy_calibrate()or phy_power_{on|off}().

The first user of the new API is phy-samsung-ufs and phy-gs101-ufs which
need to issue some register writes when entering and exiting the hibern8
link state.

A separate patch will be sent for ufs-exynos driver to make use of this new
API in the hibern8 callbacks.

Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
---
Changes in v3:
- Rename API to phy_notify_state(). (Mani/Neil)
- Remove inline kerneldoc comment (Mani)
- s/phy/PHY (Mani)
- peripheral specific enums in phy.h (Vinod)

- Link to v2: https://lore.kernel.org/r/20250703-phy-notify-pmstate-v2-0-fc1690439117@linaro.org

Changes in v2:
- Add new phy_notify_pmstate API() instead of using phy_set_mode() (Vinod)
- Link to v1: https://lore.kernel.org/r/20241002201555.3332138-1-peter.griffin@linaro.org

---
Peter Griffin (2):
      phy: add new phy_notify_state() api
      phy: samsung: gs101-ufs: Add .notify_phystate() & hibern8 enter/exit values

 drivers/phy/phy-core.c                | 25 +++++++++++++++++++++++
 drivers/phy/samsung/phy-gs101-ufs.c   | 28 ++++++++++++++++++++++++++
 drivers/phy/samsung/phy-samsung-ufs.c | 38 +++++++++++++++++++++++++++++++++++
 drivers/phy/samsung/phy-samsung-ufs.h |  7 +++++++
 include/linux/phy/phy.h               | 19 ++++++++++++++++++
 5 files changed, 117 insertions(+)
---
base-commit: 43c3c17f0c805882d1b48818b1085747a68c80ec
change-id: 20250703-phy-notify-pmstate-f02ba5582f65

Best regards,
-- 
Peter Griffin <peter.griffin@...aro.org>