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| author |   Kumar Gala <galak@codeaurora.org> | 2014-09-22 15:09:46 -0500 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2014-09-23 09:16:56 -0400 |
| commit | 8494294b66dbb4d7996dd944575eebd4ac2a126b (patch) | |
| tree | 321f5210c790c5286338a25dce56bdb7c3efc022 /Documentation/devicetree/bindings/ata/qcom-sata.txt | |
| parent | ahci-platform: Bump max number of clocks to 5 (diff) | |
| download | linux-dev-8494294b66dbb4d7996dd944575eebd4ac2a126b.tar.xz linux-dev-8494294b66dbb4d7996dd944575eebd4ac2a126b.zip | |
ata: qcom: Add device tree bindings information
Add device tree binding for Qualcomm AHCI SATA controller and specifically
the sata controller on the IPQ806x family of SoCs.
We can utilize the "generic-ahci" platform driver with the addition of the
sata phy to enable SATA support on Qualcomm SoCs with AHCI controllers.
Signed-off-by: Kumar Gala <galak@codeaurora.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/ata/qcom-sata.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/ata/qcom-sata.txt | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ata/qcom-sata.txt b/Documentation/devicetree/bindings/ata/qcom-sata.txt new file mode 100644 index 000000000000..094de91cd9fd --- /dev/null +++ b/Documentation/devicetree/bindings/ata/qcom-sata.txt @@ -0,0 +1,48 @@ +* Qualcomm AHCI SATA Controller + +SATA nodes are defined to describe on-chip Serial ATA controllers. +Each SATA controller should have its own node. + +Required properties: +- compatible : compatible list, must contain "generic-ahci" +- interrupts : <interrupt mapping for SATA IRQ> +- reg : <registers mapping> +- phys : Must contain exactly one entry as specified + in phy-bindings.txt +- phy-names : Must be "sata-phy" + +Required properties for "qcom,ipq806x-ahci" compatible: +- clocks : Must contain an entry for each entry in clock-names. +- clock-names : Shall be: + "slave_iface" - Fabric port AHB clock for SATA + "iface" - AHB clock + "core" - core clock + "rxoob" - RX out-of-band clock + "pmalive" - Power Module Alive clock +- assigned-clocks : Shall be: + SATA_RXOOB_CLK + SATA_PMALIVE_CLK +- assigned-clock-rates : Shall be: + 100Mhz (100000000) for SATA_RXOOB_CLK + 100Mhz (100000000) for SATA_PMALIVE_CLK + +Example: + sata@29000000 { + compatible = "qcom,ipq806x-ahci", "generic-ahci"; + reg = <0x29000000 0x180>; + + interrupts = <0 209 0x0>; + + clocks = <&gcc SFAB_SATA_S_H_CLK>, + <&gcc SATA_H_CLK>, + <&gcc SATA_A_CLK>, + <&gcc SATA_RXOOB_CLK>, + <&gcc SATA_PMALIVE_CLK>; + clock-names = "slave_iface", "iface", "core", + "rxoob", "pmalive"; + assigned-clocks = <&gcc SATA_RXOOB_CLK>, <&gcc SATA_PMALIVE_CLK>; + assigned-clock-rates = <100000000>, <100000000>; + + phys = <&sata_phy>; + phy-names = "sata-phy"; + }; |