kernel/include/linux/phy/phy.h, branch linux-4.15.y

drivers: phy: add calibrate method

2017-10-23T05:49:28Z

Some quirky UDCs (like dwc3 on Exynos) need to have their phys calibrated e.g. for using super speed. This patch adds a new phy_calibrate() method. When the calibration should be used is dependent on actual chip. In case of dwc3 on Exynos the calibration must happen after usb_add_hcd() (while in host mode), because certain phy parameters like Tx LOS levels and boost levels need to be calibrated further post initialization of xHCI controller, to get SuperSpeed operations working. But an hcd must be prepared first in order to pass it to usb_add_hcd(), so, in particular, dwc3 registers must be available first, and in order for the latter to happen the phys must be initialized. This poses a chicken and egg problem if the calibration were to be performed in phy_init(). To break the circular dependency a separate method is added which can be called at a desired moment after phy intialization. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kishon Vijay Abraham I

phy: Add UFS PHY modes

2017-10-23T05:49:27Z

UFS phy has two modes for each High speed generation. These modes are identified by two rates of operations - Rate A, and Rate B. Add these UFS phy modes to phy framework. Signed-off-by: Vivek Gautam Signed-off-by: Kishon Vijay Abraham I

phy: Return NULL if the phy is optional

2017-10-23T05:49:25Z

If we're trying to get a handle to an optional phy, then the phy framework being disabled shouldn't return an hard error. Instead, return NULL just like phy_optional_get does when there's no phy provided in the DT. Signed-off-by: Maxime Ripard Signed-off-by: Kishon Vijay Abraham I

phy: add sgmii and 10gkr modes to the phy_mode enum

2017-08-30T22:17:45Z

This patch adds more generic PHY modes to the phy_mode enum, to allow configuring generic PHYs to the SGMII and/or the 10GKR mode by using the set_mode callback. Signed-off-by: Antoine Tenart Acked-by: Kishon Vijay Abraham I Signed-off-by: David S. Miller

phy: Add reset callback for not generic phy

2016-11-05T08:15:02Z

Add a dummy function for phy_reset in case the CONFIG_GENERIC_PHY is disabled. Signed-off-by: Randy Li Signed-off-by: Kishon Vijay Abraham I

phy: Add reset callback

2016-09-10T12:01:39Z

The only use for this is for solving a hardware design problem in usb of Rockchip RK3288. Signed-off-by: Randy Li Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I

phy: Add set_mode callback

2016-07-04T11:49:22Z

The initial use for this is for PHYs that have a mode related to USB OTG. There are several SoCs (e.g. TI OMAP and DA8xx) that have a mode setting in the USB PHY to override OTG VBUS and ID signals. Of course, the enum can be expaned in the future to include modes for other types of PHYs as well. Suggested-by: Kishon Vijay Abraham I Signed-off-by: David Lechner

phy: core: Allow children node to be overridden

2016-04-29T14:39:39Z

In order to more flexibly support device tree bindings, allow drivers to override the container of the child nodes. By default the device node of the PHY provider is assumed to be the parent for children, but bindings may decide to add additional levels for better organization. Acked-by: Kishon Vijay Abraham I Signed-off-by: Thierry Reding

phy: core: Add devm_of_phy_get_by_index to phy-core

2015-05-11T16:12:23Z

Some generic drivers, such as ehci, may use multiple phys and for such drivers referencing phy(s) by name(s) does not make sense. Instead of inventing new naming schemes and using custom code to iterate through them, such drivers are better of using nameless phy bindings and using this newly introduced API to iterate through them. Signed-off-by: Arun Ramamurthy Reviewed-by: Ray Jui Reviewed-by: Scott Branden [kishon@ti.com: fix compilation errors] Signed-off-by: Kishon Vijay Abraham I

phy: remove the old lookup method

2014-11-22T08:28:39Z

The users of the old method are now converted to the new one. Signed-off-by: Heikki Krogerus [ kishon@ti.com : made phy-berlin-usb.c and phy-miphy28lp.c to use the updated devm_phy_create API.] Signed-off-by: Kishon Vijay Abraham I