linux-kernel - [PATCH v2 0/2] Add new phy_notify

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Message-Id: <20250703-phy-notify-pmstate-v2-0-fc1690439117@linaro.org>
Date: Thu, 03 Jul 2025 14:03:21 +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>, 
 Peter Griffin <peter.griffin@...aro.org>
Subject: [PATCH v2 0/2] Add new phy_notify_pmstate() api

This series adds a new phy_notify_pmstate() 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 pm 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
needs 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.

To: Vinod Koul <vkoul@...nel.org>
To: Kishon Vijay Abraham I <kishon@...nel.org>
To: André Draszik <andre.draszik@...aro.org>
To: Tudor Ambarus <tudor.ambarus@...aro.org>
To: Alim Akhtar <alim.akhtar@...sung.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: linux-phy@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-samsung-soc@...r.kernel.org
Cc: kernel-team@...roid.com
Cc: William Mcvicker <willmcvicker@...gle.com>
Signed-off-by: Peter Griffin <peter.griffin@...aro.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_pmstate() api
      phy: samsung: gs101-ufs: Add .notify_pmstate() and 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               | 25 +++++++++++++++++++++++
 5 files changed, 123 insertions(+)
---
base-commit: 97bdc30f39b63758868f67841cebb8c50869e16d
change-id: 20250703-phy-notify-pmstate-f02ba5582f65

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