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| 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/arm/calxeda | |
| parent | 100f586bd0959fe0e52b8a0b8cb49a3df1c6b044 (diff) | |
| download | op-kernel-dev-8996b89d6bc98ae2f6d6e6e624a42a3f89d06949.zip op-kernel-dev-8996b89d6bc98ae2f6d6e6e624a42a3f89d06949.tar.gz | |
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/arm/calxeda')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/calxeda/combophy.txt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/calxeda/combophy.txt b/Documentation/devicetree/bindings/arm/calxeda/combophy.txt new file mode 100644 index 0000000..6622bdb --- /dev/null +++ b/Documentation/devicetree/bindings/arm/calxeda/combophy.txt @@ -0,0 +1,17 @@ +Calxeda Highbank Combination Phys for SATA + +Properties: +- compatible : Should be "calxeda,hb-combophy" +- #phy-cells: Should be 1. +- reg : Address and size for Combination Phy registers. +- phydev: device ID for programming the combophy. + +Example: + + combophy5: combo-phy@fff5d000 { + compatible = "calxeda,hb-combophy"; + #phy-cells = <1>; + reg = <0xfff5d000 0x1000>; + phydev = <31>; + }; + |
