[PATCH 2/2] dt-bindings: phy: Add documentation for Mediatek PCIe PHY
From: ryder.lee@mediatek.com (Ryder Lee)
Date: 2017-05-02 07:09:03
Also in:
linux-devicetree, linux-mediatek, lkml
On Fri, 2017-04-28 at 12:52 -0500, Rob Herring wrote:
On Sun, Apr 23, 2017 at 04:17:33PM +0800, Ryder Lee wrote:quoted
Add documentation for PCIe PHY available in MT7623 series SoCs. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> --- .../devicetree/bindings/phy/phy-mt7623-pcie.txt | 67 ++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-mt7623-pcie.txtdiff --git a/Documentation/devicetree/bindings/phy/phy-mt7623-pcie.txt b/Documentation/devicetree/bindings/phy/phy-mt7623-pcie.txt new file mode 100644 index 0000000..27a9253 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-mt7623-pcie.txt@@ -0,0 +1,67 @@ +Mediatek MT7623 PCIe PHY +----------------------- + +Required properties: + - compatible: Should contain "mediatek,mt7623-pcie-phy" + - #phy-cells: must be 0 + - clocks: Must contain an entry in clock-names. + See ../clocks/clock-bindings.txt for details. + - clock-names: Must be "refclk" + - resets: Must contain an entry in reset-names. + See ../reset/reset.txt for details. + - reset-names: Must be "phy" + +Optional properties: + - phy-switch: The PHY on PCIe port2 is shared with USB u3phy2. If you + want to enable port2, you should contain it.Need to state what the value is (i.e. a phandle to ?). Also needs a vendor prefix.
I will correct it.
quoted
+ +Example: + + pcie0_phy: pciephy at 1a149000 {pcie-phy at ...
Okay.
quoted
+ compatible = "mediatek,mt7623-pcie-phy"; + reg = <0 0x1a149000 0 0x1000>; + clocks = <&clk26m>; + clock-names = "pciephya_ref"; + #phy-cells = <0>; + status = "disabled";Don't show status in examples.
I will drop it all.
quoted
+ }; + + pcie1_phy: pciephy at 1a14a000 { + compatible = "mediatek,mt7623-pcie-phy"; + reg = <0 0x1a14a000 0 0x1000>; + clocks = <&clk26m>; + clock-names = "pciephya_ref"; + #phy-cells = <0>; + status = "disabled"; + }; + + pcie2_phy: pciephy at 1a244000 { + compatible = "mediatek,mt7623-pcie-phy"; + reg = <0 0x1a244000 0 0x1000>; + clocks = <&clk26m>; + clock-names = "pciephya_ref"; + #phy-cells = <0>; + + phy-switch = <&hifsys>; + status = "disabled"; + }; + +Specifying phy control of devices +--------------------------------- + +Device nodes should specify the configuration required in their "phys" +property, containing a phandle to the phy node and phy-names. + +Example: + +#include <dt-bindings/phy/phy.h> + +pcie: pcie at 1a140000 { + ... + pcie at 1,0 { + ... + phys = <&pcie0_phy>; + phy-names = "pcie-phy0"; + } + ... +};
Thanks for your reviews.
quoted
-- 1.9.1