diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-06-03 14:13:41 +0900 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-06-03 14:13:41 +0900 |
commit | b3d424e3dcbb5eba572baae30e1052b2fff7b51e (patch) | |
tree | 8055b6dca7b3cda1beffc6f5aee3a7602daef09b /Documentation/phy.txt | |
parent | f50420223071b6ff4b586308f5c27eec54694a81 (diff) | |
parent | 692fbb89fa0b8028f402e33eb912474e11b5f435 (diff) |
Merge tag 'phy-for-v4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next
Kishon writes:
phy: for 4.2 merge window
*) new Broadcom SATA3 PHY driver for Broadcom STB SoCs
*) new phy API to get PHY by index which is used in EHCI and
OHCI controller drivers
*) support specifying supply at port level used for multi-port PHYs
*) sparse warning fixes in miphy PHYs
*) fix pm_runtime issues in twl4030 driver
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'Documentation/phy.txt')
-rw-r--r-- | Documentation/phy.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/phy.txt b/Documentation/phy.txt index 371361c69a4b..b388c5af9e72 100644 --- a/Documentation/phy.txt +++ b/Documentation/phy.txt @@ -76,6 +76,8 @@ struct phy *phy_get(struct device *dev, const char *string); struct phy *phy_optional_get(struct device *dev, const char *string); struct phy *devm_phy_get(struct device *dev, const char *string); struct phy *devm_phy_optional_get(struct device *dev, const char *string); +struct phy *devm_of_phy_get_by_index(struct device *dev, struct device_node *np, + int index); phy_get, phy_optional_get, devm_phy_get and devm_phy_optional_get can be used to get the PHY. In the case of dt boot, the string arguments @@ -86,7 +88,10 @@ successful PHY get. On driver detach, release function is invoked on the the devres data and devres data is freed. phy_optional_get and devm_phy_optional_get should be used when the phy is optional. These two functions will never return -ENODEV, but instead returns NULL when -the phy cannot be found. +the phy cannot be found.Some generic drivers, such as ehci, may use multiple +phys and for such drivers referencing phy(s) by name(s) does not make sense. In +this case, devm_of_phy_get_by_index can be used to get a phy reference based on +the index. It should be noted that NULL is a valid phy reference. All phy consumer calls on the NULL phy become NOPs. That is the release calls, |