From 8996b89d6bc98ae2f6d6e6e624a42a3f89d06949 Mon Sep 17 00:00:00 2001 From: Mark Langsdorf Date: Thu, 6 Sep 2012 16:03:30 -0500 Subject: ata: add platform driver for Calxeda AHCI controller Calxeda highbank SATA phy has intermittent problems bringing up a link with Gen3 drives. Retrying the phy hard reset can work-around this issue, but each reset also disables spread spectrum support. The reset function also needs to reprogram the phy to enable spread spectrum support. Create a new driver based on ahci_platform to support the Calxeda Highbank SATA controller. Signed-off-by: Mark Langsdorf Signed-off-by: Rob Herring Signed-off-by: Jeff Garzik --- Documentation/devicetree/bindings/ata/ahci-platform.txt | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'Documentation/devicetree/bindings/ata/ahci-platform.txt') diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt index 8bb8a76d42e8..147c1f6653fe 100644 --- a/Documentation/devicetree/bindings/ata/ahci-platform.txt +++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt @@ -8,9 +8,17 @@ Required properties: - interrupts : - reg : +Optional properties: +- calxeda,port-phys: phandle-combophy and lane assignment, which maps each + SATA port to a combophy and a lane within that + combophy + Example: sata@ffe08000 { compatible = "calxeda,hb-ahci"; reg = <0xffe08000 0x1000>; interrupts = <115>; + calxeda,port-phys = <&combophy5 0 &combophy0 0 &combophy0 1 + &combophy0 2 &combophy0 3>; + }; -- cgit v1.2.3-59-g8ed1b