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Commit 23a7c31e authored by Shawn Guo's avatar Shawn Guo Committed by Tejun Heo
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dt-bindings: ata: create bindings for imx sata controller 



To: Tejun Heo <tj@kernel.org>,linux-ide@vger.kernel.org

The Freescale i.MX SATA controller mostly conforms to the AHCI
interface, but there are some special extensions at integration level
like clocks settings and hardware parameters.

Let's create a separate bindings doc for imx sata controller, so that
more imx specific properties can be added later without messing up the
generic ahci-platform bindings.

Signed-off-by: default avatarShawn Guo <shawn.guo@freescale.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent a1a6cc1d

Documentation/devicetree/bindings/ata/ahci-platform.txt

+0 −6
Original line number Original line Diff line number Diff line
@@ -6,8 +6,6 @@ Each SATA controller should have its own node. 
Required properties:

Required properties:

- compatible        : compatible string, one of:

- compatible        : compatible string, one of:

  - "allwinner,sun4i-a10-ahci"

  - "allwinner,sun4i-a10-ahci"

  - "fsl,imx53-ahci"

  - "fsl,imx6q-ahci"

  - "hisilicon,hisi-ahci"

  - "hisilicon,hisi-ahci"

  - "ibm,476gtr-ahci"

  - "ibm,476gtr-ahci"

  - "marvell,armada-380-ahci"

  - "marvell,armada-380-ahci"
@@ -22,10 +20,6 @@ Optional properties: 
- clocks            : a list of phandle + clock specifier pairs

- clocks            : a list of phandle + clock specifier pairs

- target-supply     : regulator for SATA target power

- target-supply     : regulator for SATA target power





"fsl,imx53-ahci", "fsl,imx6q-ahci" required properties:

- clocks            : must contain the sata, sata_ref and ahb clocks

- clock-names       : must contain "ahb" for the ahb clock



Examples:

Examples:

        sata@ffe08000 {

        sata@ffe08000 {

		compatible = "snps,spear-ahci";

		compatible = "snps,spear-ahci";

Documentation/devicetree/bindings/ata/imx-sata.txt

0 → 100644
+26 −0
Original line number Original line Diff line number Diff line 
* Freescale i.MX AHCI SATA Controller



The Freescale i.MX SATA controller mostly conforms to the AHCI interface

with some special extensions at integration level.



Required properties:

- compatible : should be one of the following:

   - "fsl,imx53-ahci" for i.MX53 SATA controller

   - "fsl,imx6q-ahci" for i.MX6Q SATA controller

- interrupts : interrupt mapping for SATA IRQ

- reg : registers mapping

- clocks : list of clock specifiers, must contain an entry for each

  required entry in clock-names

- clock-names : should include "sata", "sata_ref" and "ahb" entries



Examples:



sata@02200000 {

	compatible = "fsl,imx6q-ahci";

	reg = <0x02200000 0x4000>;

	interrupts = <0 39 IRQ_TYPE_LEVEL_HIGH>;

	clocks = <&clks IMX6QDL_CLK_SATA>,

		 <&clks IMX6QDL_CLK_SATA_REF_100M>,

		 <&clks IMX6QDL_CLK_AHB>;

	clock-names = "sata", "sata_ref", "ahb";

};