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>
diff --git a/arch/arm/boot/dts/highbank.dts b/arch/arm/boot/dts/highbank.dts
index 9fecf1a..5204cf7 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>;
+ };
};
};