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@@ -45,7 +45,8 @@ config SATA_PMP
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bool "SATA Port Multiplier support"
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default y
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help
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- This option adds support for SATA Port Multipliers.
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+ This option adds support for SATA Port Multipliers
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+ (the SATA version of an ethernet hub, or SAS expander).
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config SATA_AHCI
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tristate "AHCI SATA support"
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@@ -79,6 +80,17 @@ config ATA_SFF
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This option adds support for ATA controllers with SFF
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compliant or similar programming interface.
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+ SFF is the legacy IDE interface that has been around since
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+ the dawn of time. Almost all PATA controllers have an
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+ SFF interface. Many SATA controllers have an SFF interface
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+ when configured into a legacy compatibility mode.
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+
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+ For users with exclusively modern controllers like AHCI,
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+ Silicon Image 3124, or Marvell 6440, you may choose to
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+ disable this uneeded SFF support.
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+
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+ If unsure, say Y.
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+
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if ATA_SFF
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config SATA_SVW
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Jeff Garzik