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Date: Thu, 25 Apr 2019 01:24:22 +0300
From: Grygorii Strashko <grygorii.strashko@...com>
To: <netdev@...r.kernel.org>,
Ilias Apalodimas <ilias.apalodimas@...aro.org>,
Andrew Lunn <andrew@...n.ch>,
"David S . Miller" <davem@...emloft.net>,
Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>,
Jiri Pirko <jiri@...nulli.us>
CC: Florian Fainelli <f.fainelli@...il.com>,
Sekhar Nori <nsekhar@...com>, <linux-kernel@...r.kernel.org>,
<linux-omap@...r.kernel.org>,
Murali Karicheri <m-karicheri2@...com>,
Ivan Vecera <ivecera@...hat.com>,
Grygorii Strashko <grygorii.strashko@...com>
Subject: [RFC PATCH v3 net-next 06/11] dt-bindings: net: ti: add new cpsw switch driver bindings
Add bindings for the new TI CPSW switch driver. Comparing to the legacy
bindings (net/cpsw.txt):
- ports definition follows DSA bindings (net/dsa/dsa.txt) and ports can be
marked as "disabled" if not physically wired.
- ports definition follows DSA bindings (net/dsa/dsa.txt) and ports can be
marked as "disabled" if not physically wired.
- all deprecated properties dropped;
- all legacy propertiies dropped which represents constant HW cpapbilities
(cpdma_channels, ale_entries, bd_ram_size, mac_control, slaves,
active_slave)
- cpts properties grouped in "cpts" sub-node
Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
.../bindings/net/ti,cpsw-switch.txt | 117 ++++++++++++++++++
1 file changed, 117 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/ti,cpsw-switch.txt
diff --git a/Documentation/devicetree/bindings/net/ti,cpsw-switch.txt b/Documentation/devicetree/bindings/net/ti,cpsw-switch.txt
new file mode 100644
index 000000000000..d9c6480501b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ti,cpsw-switch.txt
@@ -0,0 +1,117 @@
+TI SoC Ethernet Switch Controller Device Tree Bindings (new)
+------------------------------------------------------
+
+The 3-port switch gigabit ethernet subsystem provides ethernet packet
+communication and can be configured as an ethernet switch. It provides the
+gigabit media independent interface (GMII),reduced gigabit media
+independent interface (RGMII), reduced media independent interface (RMII),
+the management data input output (MDIO) for physical layer device (PHY)
+management.
+
+Required properties:
+- compatible : be one of the below:
+ "ti,cpsw-switch" for backward compatible
+ "ti,am335x-cpsw-switch" for AM335x controllers
+ "ti,am4372-cpsw-switch" for AM437x controllers
+ "ti,dra7-cpsw-switch" for DRA7x controllers
+- reg : physical base address and size of the CPSW module IO range
+- ranges : shall contain the CPSW module IO range available for child devices
+- clocks : should contain the CPSW functional clock
+- clock-names : should be "fck"
+ See bindings/clock/clock-bindings.txt
+- interrupts : should contain CPSW RX, TX, MISC, RX_THRESH interrupts
+- interrupt-names : should contain "rx_thresh", "rx", "tx", "misc"
+ See bindings/interrupt-controller/interrupts.txt
+
+Optional properties:
+- syscon : phandle to the system control device node which provides access to
+ efuse IO range with MAC addresses
+
+Required Sub-nodes:
+- ports : contains CPSW external ports descriptions
+ Required properties:
+ - #address-cells : Must be 1
+ - #size-cells : Must be 0
+ - reg : CPSW port number. Should be 1 or 2
+ - phys : phandle on phy-gmii-sel PHY (see phy/ti-phy-gmii-sel.txt)
+ - phy-mode : operation mode of the PHY interface [1]
+ - phy-handle : phandle to a PHY on an MDIO bus [1]
+
+ Optional properties:
+ - ti,label : Describes the label associated with this port
+ - mac-address : array of 6 bytes, specifies the MAC address. Always
+ accounted first if present [1]
+ - local-mac-address : See [1]
+
+- mdio : CPSW MDIO bus block description
+ - bus_freq : MDIO Bus frequency
+ See bindings/net/mdio.txt and davinci-mdio.txt
+
+- cpts : The Common Platform Time Sync (CPTS) module description
+ - clocks : should contain the CPTS reference clock
+ - clock-names : should be "cpts"
+ See bindings/clock/clock-bindings.txt
+
+ Optional properties - all ports:
+ - cpts_clock_mult : Numerator to convert input clock ticks into ns
+ - cpts_clock_shift : Denominator to convert input clock ticks into ns
+ Mult and shift will be calculated basing on CPTS
+ rftclk frequency if both cpts_clock_shift and
+ cpts_clock_mult properties are not provided.
+
+[1] See Documentation/devicetree/bindings/net/ethernet.txt
+
+Examples:
+
+mac_sw: ethernet_switch@0 {
+ compatible = "ti,dra7-cpsw-switch","ti,cpsw-switch";
+ reg = <0x0 0x4000>;
+ ranges = <0 0 0x4000>;
+ clocks = <&gmac_main_clk>;
+ clock-names = "fck";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ syscon = <&scm_conf>;
+ status = "disabled";
+
+ interrupts = <GIC_SPI 334 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 335 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 336 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 337 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "rx_thresh", "rx", "tx", "misc"
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpsw_port1: port@1 {
+ reg = <1>;
+ ti,label = "port1";
+ /* Filled in by U-Boot */
+ mac-address = [ 00 00 00 00 00 00 ];
+ phys = <&phy_gmii_sel 1>;
+ };
+
+ cpsw_port2: port@2 {
+ reg = <2>;
+ ti,label = "port2";
+ /* Filled in by U-Boot */
+ mac-address = [ 00 00 00 00 00 00 ];
+ phys = <&phy_gmii_sel 2>;
+ };
+ };
+
+ davinci_mdio_sw: mdio@...0 {
+ compatible = "ti,cpsw-mdio","ti,davinci_mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ ti,hwmods = "davinci_mdio";
+ bus_freq = <1000000>;
+ reg = <0x1000 0x100>;
+ };
+
+ cpts {
+ clocks = <&gmac_clkctrl DRA7_GMAC_GMAC_CLKCTRL 25>;
+ clock-names = "cpts";
+ };
+};
--
2.17.1
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