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>

1 files changed, 32 insertions, 13 deletions

diff --git a/Documentation/devicetree/bindings/ata/ahci-st.txt b/Documentation/devicetree/bindings/ata/ahci-st.txt
index 133120270066..e1d01df8e3c1 100644
--- 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";
         };