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The 5785 does not use the RXC reference clock. Turning it off is desirable as it saves power. By default, the 50610 enables the RXC reference clock and the 50610M disables it. Presumably this is one of the reasons why the hardware architect chose one over the other. Adding a "rx reference clock disable" flag is not the ideal way to describe the option, as it would force the MAC using a 50610M to set the flag. Ideally we want the flags to represent opt-in behavior that deviates from hardware defaults. Furthermore, the lack of a "disable" flag implies that the requester wants the rx reference clock enabled, which doesn't necessarily follow. By presenting the option as a passive statement (rx reference clock unused) rather than a command, I hope to convey an opt-in option to disable the rx reference clock that falls back to hardware defaults if not set. A secondary benefit of this is that it keeps the intelligence about phy defaults in the broadcom module where it belongs and allows the broadcom module more latitude should a bug arise. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
12 lines
539 B
C
12 lines
539 B
C
#define PHY_BCM_FLAGS_MODE_COPPER 0x00000001
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#define PHY_BCM_FLAGS_MODE_1000BX 0x00000002
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#define PHY_BCM_FLAGS_INTF_SGMII 0x00000010
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#define PHY_BCM_FLAGS_INTF_XAUI 0x00000020
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#define PHY_BRCM_WIRESPEED_ENABLE 0x00000100
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#define PHY_BRCM_AUTO_PWRDWN_ENABLE 0x00000200
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#define PHY_BRCM_RX_REFCLK_UNUSED 0x00000400
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#define PHY_BRCM_STD_IBND_DISABLE 0x00000800
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#define PHY_BRCM_EXT_IBND_RX_ENABLE 0x00001000
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#define PHY_BRCM_EXT_IBND_TX_ENABLE 0x00002000
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#define PHY_BRCM_CLEAR_RGMII_MODE 0x00004000
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#define PHY_BCM_FLAGS_VALID 0x80000000
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