linux-kernel - [PATCH v1 0/2] Add support to get/set PHY attributes using

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Date:   Tue, 28 Apr 2020 09:10:02 +0200
From:   Yuti Amonkar <yamonkar@...ence.com>
To:     <linux-kernel@...r.kernel.org>, <kishon@...com>,
        <mark.rutland@....com>, <maxime@...no.tech>
CC:     <jsarha@...com>, <tomi.valkeinen@...com>, <praneeth@...com>,
        <mparab@...ence.com>, <sjakhade@...ence.com>,
        <yamonkar@...ence.com>
Subject: [PATCH v1 0/2] Add support to get/set PHY attributes using

This patch series adds support to use kernel PHY subsystem APIs
to get/set PHY attributes like number of lanes and maximum link rate.
It includes following patches:

1. v1-0001-phy-Add-max_link_rate-as-a-PHY-attribute-along-wi.patch
This patch adds max_link_rate as a PHY attribute along with a pair of APIs
that allow the generic PHY subsystem to provide information on the maximum
value of link rate supported by the PHY. The PHY provider driver may use
phy_set_max_link_rate() to set the value that PHY supports. The controller
driver may then use phy_get_max_link_rate() to fetch the PHY link rate in
order to properly configure the controller.

2. v1-0002-phy-phy-cadence-torrent-Use-PHY-kernel-APIs-to-se.patch
This patch uses kernel PHY APIs phy_set_bus_width() and phy_set_max_link_rate()
to set corresponding PHY properties in Cadence Torrent PHY driver. This will
enable drivers using this PHY to read these properties using PHY framework.

The get API's will be used in the Cadence MHDP DRM bridge driver [1] which is under
review for upstreaming.

[1]

https://lkml.org/lkml/2020/2/26/263

Swapnil Jakhade (1):
  phy: phy-cadence-torrent: Use PHY kernel APIs to set PHY attributes

Yuti Amonkar (1):
  phy: Add max_link_rate as a PHY attribute along with APIs to get/set
    its value

 drivers/phy/cadence/phy-cadence-torrent.c |  3 +++
 include/linux/phy/phy.h                   | 21 +++++++++++++++++++++
 2 files changed, 24 insertions(+)

-- 
2.26.1