ahci: st: Provide DT bindings for ST's SATA implementation

Cc: devicetree@vger.kernel.org
Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/Documentation/devicetree/bindings/ata/ahci-st.txt b/Documentation/devicetree/bindings/ata/ahci-st.txt
new file mode 100644 (file)
index 0000000..0574a77
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+++ b/Documentation/devicetree/bindings/ata/ahci-st.txt
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+STMicroelectronics STi SATA controller
+
+This binding describes a SATA device.
+
+Required properties:
+ - compatible     : Must be "st,sti-ahci"
+ - reg            : Physical base addresses and length of register sets
+ - interrupts     : Interrupt associated with the SATA device
+ - interrupt-names :   Associated name must be; "hostc"
+ - resets         : The power-down and soft-reset lines of SATA IP
+ - reset-names    :   Associated names must be; "pwr-dwn" and "sw-rst"
+ - clocks         : The phandle for the clock
+ - clock-names    :   Associated name must be; "ahci_clk"
+ - phys                   : The phandle for the PHY device
+ - phy-names      :   Associated name must be; "ahci_phy"
+
+Example:
+
+       sata0: sata@fe380000 {
+               compatible      = "st,sti-ahci";
+               reg             = <0xfe380000 0x1000>;
+               interrupts      = <GIC_SPI 157 IRQ_TYPE_NONE>;
+               interrupt-names = "hostc";
+               phys            = <&miphy365x_phy MIPHY_PORT_0 MIPHY_TYPE_SATA>;
+               phy-names       = "ahci_phy";
+               resets          = <&powerdown STIH416_SATA0_POWERDOWN>,
+                                 <&softreset STIH416_SATA0_SOFTRESET>;
+               reset-names     = "pwr-dwn", "sw-rst";
+               clocks          = <&clk_s_a0_ls CLK_ICN_REG>;
+               clock-names     = "ahci_clk";
+       };