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authorFlorian Fainelli <f.fainelli@gmail.com>2021-05-26 11:46:17 -0700
committerJakub Kicinski <kuba@kernel.org>2021-05-26 13:15:55 -0700
commit62f3415db237b8d2aa9a804ff84ce2efa87df179 (patch)
tree55fc90e958ff20e8e73468ad579b0c904beccdba /include
parentf5d287126f63f76bcf50cf0b085199cc34f07d74 (diff)
net: phy: Document phydev::dev_flags bits allocation
Document the phydev::dev_flags bit allocation to allow bits 15:0 to define PHY driver specific behavior, bits 23:16 to be reserved for now, and bits 31:24 to hold generic PHY driver flags. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/20210526184617.3105012-1-f.fainelli@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/phy.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 60d2b26026a2..852743f07e3e 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -496,6 +496,11 @@ struct macsec_ops;
* @mac_managed_pm: Set true if MAC driver takes of suspending/resuming PHY
* @state: State of the PHY for management purposes
* @dev_flags: Device-specific flags used by the PHY driver.
+ * Bits [15:0] are free to use by the PHY driver to communicate
+ * driver specific behavior.
+ * Bits [23:16] are currently reserved for future use.
+ * Bits [31:24] are reserved for defining generic
+ * PHY driver behavior.
* @irq: IRQ number of the PHY's interrupt (-1 if none)
* @phy_timer: The timer for handling the state machine
* @phylink: Pointer to phylink instance for this PHY

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