phy: miphy365x: Add Device Tree bindings for the MiPHY365x
The MiPHY365x is a Generic PHY which can serve various SATA or PCIe
devices. It has 2 ports which it can use for either; both SATA, both
PCIe or one of each in any configuration.
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
diff --git a/Documentation/devicetree/bindings/phy/phy-miphy365x.txt b/Documentation/devicetree/bindings/phy/phy-miphy365x.txt
new file mode 100644
index 0000000..15d105a
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+STMicroelectronics STi MIPHY365x PHY binding
+============================================
+
+This binding describes a miphy device that is used to control PHY hardware
+for SATA and PCIe.
+
+Required properties:
+- compatible : Should be "st,miphy365x-phy"
+- #phy-cells : Should be 2 (See second example)
+ First cell is the port number from:
+ - MIPHY_PORT_0
+ - MIPHY_PORT_1
+ Second cell is device type from:
+ - MIPHY_TYPE_SATA
+ - MIPHY_TYPE_PCI
+- reg : Address and length of register sets for each device in
+ "reg-names"
+- reg-names : The names of the register addresses corresponding to the
+ registers filled in "reg", from:
+ - sata0: For SATA port 0 registers
+ - sata1: For SATA port 1 registers
+ - pcie0: For PCIE port 0 registers
+ - pcie1: For PCIE port 1 registers
+- st,syscfg : Should be a phandle of the system configuration register group
+ which contain the SATA, PCIe mode setting bits
+
+Optional properties:
+- st,sata-gen : Generation of locally attached SATA IP. Expected values
+ are {1,2,3). If not supplied generation 1 hardware will
+ be expected
+- st,pcie-tx-pol-inv : Bool property to invert the polarity PCIe Tx (Txn/Txp)
+- st,sata-tx-pol-inv : Bool property to invert the polarity SATA Tx (Txn/Txp)
+
+Example:
+
+ miphy365x_phy: miphy365x@0 {
+ compatible = "st,miphy365x-phy";
+ #phy-cells = <2>;
+ reg = <0xfe382000 0x100>,
+ <0xfe38a000 0x100>,
+ <0xfe394000 0x100>,
+ <0xfe804000 0x100>;
+ reg-names = "sata0", "sata1", "pcie0", "pcie1";
+ st,syscfg = <&syscfg_rear>;
+ };
+
+Specifying phy control of devices
+=================================
+
+Device nodes should specify the configuration required in their "phys"
+property, containing a phandle to the miphy device node, a port number
+and a device type.
+
+Example:
+
+#include <dt-bindings/phy/phy-miphy365x.h>
+
+ sata0: sata@fe380000 {
+ ...
+ phys = <&miphy365x_phy MIPHY_PORT_0 MIPHY_TYPE_SATA>;
+ ...
+ };
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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