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>

1 files changed, 17 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/highbank.dts b/arch/arm/boot/dts/highbank.dts
index 9fecf1ae777b..5204cf73c2d8 100644
--- a/arch/arm/boot/dts/highbank.dts
+++ b/arch/arm/boot/dts/highbank.dts
@@ -121,6 +121,9 @@
                         compatible = "calxeda,hb-ahci";
                         reg = <0xffe08000 0x10000>;
                         interrupts = <0 83 4>;
+                        calxeda,port-phys = <&combophy5 0 &combophy0 0
+                                             &combophy0 1 &combophy0 2
+                                             &combophy0 3>;
                 };
 
                 sdhci@ffe0e000 {
@@ -306,5 +309,19 @@
                         reg = <0xfff51000 0x1000>;
                         interrupts = <0 80 4  0 81 4  0 82 4>;
                 };
+
+                combophy0: combo-phy@fff58000 {
+                        compatible = "calxeda,hb-combophy";
+                        #phy-cells = <1>;
+                        reg = <0xfff58000 0x1000>;
+                        phydev = <5>;
+                };
+
+                combophy5: combo-phy@fff5d000 {
+                        compatible = "calxeda,hb-combophy";
+                        #phy-cells = <1>;
+                        reg = <0xfff5d000 0x1000>;
+                        phydev = <31>;
+                };
         };
 };