diff options
| author | Mark Langsdorf <mark.langsdorf@calxeda.com> | 2012-09-06 16:03:30 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2012-09-13 01:09:41 -0400 |
| commit | 8996b89d6bc98ae2f6d6e6e624a42a3f89d06949 (patch) | |
| tree | 2084f726d4a4b4ecc4db807fadcb2c529b73f776 /Documentation/devicetree/bindings/ata | |
| parent | 100f586bd0959fe0e52b8a0b8cb49a3df1c6b044 (diff) | |
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 <mark.langsdorf@calxeda.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'Documentation/devicetree/bindings/ata')
| -rw-r--r-- | Documentation/devicetree/bindings/ata/ahci-platform.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt index 8bb8a76d42e..147c1f6653f 100644 --- a/Documentation/devicetree/bindings/ata/ahci-platform.txt +++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt @@ -8,9 +8,17 @@ Required properties: - interrupts : <interrupt mapping for SATA IRQ> - reg : <registers mapping> +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>; + }; |