Thread (5 messages) 5 messages, 2 authors, 2017-05-02

[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.txt
diff --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
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help