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ahci: st: Update the ahci_st DT documentation

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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>
This commit is contained in:
Peter Griffin 2015-03-31 08:35:07 +01:00 committed by Tejun Heo
parent b6305d6223
commit 9a8340bfeb
1 changed files with 32 additions and 13 deletions
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45
Documentation/devicetree/bindings/ata/ahci-st.txt
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@ -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";
};