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Date: Mon, 2 Mar 2015 12:48:37 +0000
From: Peter Griffin <peter.griffin@...aro.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
maxime.coquelin@...com, patrice.chotard@...com,
srinivas.kandagatla@...il.com, tj@...nel.org
Cc: peter.griffin@...aro.org, lee.jones@...aro.org,
linux-ide@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH 1/3] 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@...aro.org>
---
Documentation/devicetree/bindings/ata/ahci-st.txt | 45 ++++++++++++++++-------
1 file changed, 32 insertions(+), 13 deletions(-)
diff --git a/Documentation/devicetree/bindings/ata/ahci-st.txt b/Documentation/devicetree/bindings/ata/ahci-st.txt
index 1331202..e1d01df 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@...80000 {
- 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@...0000 {
+ 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";
};
--
1.9.1
--
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