ahci: st: Update the ahci_st DT documentation

As part of testing ahci_st driver working on stih407 I noticed
several things wrong in the DT documentation: -

1) Compatible string doesn't match the driver code
2) pwr-rst reset isn't documented (but exists in the driver)
3) some whitespace issues (spaces not tabs)

Also add in a stih407 family example into the doc.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
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
index 1331202..e1d01df 100644 (file)
--- a/Documentation/devicetree/bindings/ata/ahci-st.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-st.txt
@@ -3,29 +3,48 @@ STMicroelectronics STi SATA controller
 This binding describes a SATA device.
 
 Required properties:
- - compatible     : Must be "st,sti-ahci"
+ - compatible     : Must be "st,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 port
  - phy-names      :   Associated name must be; "ahci_phy"
 
+Optional properties:
+ - resets         : The power-down, soft-reset and power-reset lines of SATA IP
+ - reset-names    :   Associated names must be; "pwr-dwn", "sw-rst" and "pwr-rst"
+
 Example:
 
+       /* Example for stih416 */
        sata0: sata@fe380000 {
-               compatible      = "st,sti-ahci";
-               reg             = <0xfe380000 0x1000>;
-               interrupts      = <GIC_SPI 157 IRQ_TYPE_NONE>;
-               interrupt-names = "hostc";
-               phys            = <&phy_port0 PHY_TYPE_SATA>;
-               phy-names       = "ahci_phy";
-               resets          = <&powerdown STIH416_SATA0_POWERDOWN>,
+               compatible      = "st,ahci";
+               reg             = <0xfe380000 0x1000>;
+               interrupts      = <GIC_SPI 157 IRQ_TYPE_NONE>;
+               interrupt-names = "hostc";
+               phys            = <&phy_port0 PHY_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";
+               reset-names     = "pwr-dwn", "sw-rst";
+               clocks          = <&clk_s_a0_ls CLK_ICN_REG>;
+               clock-names     = "ahci_clk";
+       };
+
+       /* Example for stih407 family silicon */
+       sata0: sata@9b20000 {
+               compatible      = "st,ahci";
+               reg             = <0x9b20000 0x1000>;
+               interrupts      = <GIC_SPI 159 IRQ_TYPE_NONE>;
+               interrupt-names = "hostc";
+               phys            = <&phy_port0 PHY_TYPE_SATA>;
+               phy-names       = "ahci_phy";
+               resets          = <&powerdown STIH407_SATA0_POWERDOWN>,
+                                 <&softreset STIH407_SATA0_SOFTRESET>,
+                                 <&softreset STIH407_SATA0_PWR_SOFTRESET>;
+               reset-names     = "pwr-dwn", "sw-rst", "pwr-rst";
+               clocks          = <&clk_s_c0_flexgen CLK_ICN_REG>;
+               clock-names     = "ahci_clk";
        };