diff options
Diffstat (limited to 'Documentation/devicetree')
13 files changed, 116 insertions, 25 deletions
diff --git a/Documentation/devicetree/bindings/ABI.txt b/Documentation/devicetree/bindings/ABI.txt new file mode 100644 index 00000000000..d25f8d37968 --- /dev/null +++ b/Documentation/devicetree/bindings/ABI.txt @@ -0,0 +1,39 @@ + + Devicetree (DT) ABI + +I. Regarding stable bindings/ABI, we quote from the 2013 ARM mini-summit + summary document: + + "That still leaves the question of, what does a stable binding look + like? Certainly a stable binding means that a newer kernel will not + break on an older device tree, but that doesn't mean the binding is + frozen for all time. Grant said there are ways to change bindings that + don't result in breakage. For instance, if a new property is added, + then default to the previous behaviour if it is missing. If a binding + truly needs an incompatible change, then change the compatible string + at the same time. The driver can bind against both the old and the + new. These guidelines aren't new, but they desperately need to be + documented." + +II. General binding rules + + 1) Maintainers, don't let perfect be the enemy of good. Don't hold up a + binding because it isn't perfect. + + 2) Use specific compatible strings so that if we need to add a feature (DMA) + in the future, we can create a new compatible string. See I. + + 3) Bindings can be augmented, but the driver shouldn't break when given + the old binding. ie. add additional properties, but don't change the + meaning of an existing property. For drivers, default to the original + behaviour when a newly added property is missing. + + 4) Don't submit bindings for staging or unstable. That will be decided by + the devicetree maintainers *after* discussion on the mailinglist. + +III. Notes + + 1) This document is intended as a general familiarization with the process as + decided at the 2013 Kernel Summit. When in doubt, the current word of the + devicetree maintainers overrules this document. In that situation, a patch + updating this document would be appreciated. diff --git a/Documentation/devicetree/bindings/arm/gic.txt b/Documentation/devicetree/bindings/arm/gic.txt index 3dfb0c0384f..bae0d87a38b 100644 --- a/Documentation/devicetree/bindings/arm/gic.txt +++ b/Documentation/devicetree/bindings/arm/gic.txt @@ -11,6 +11,7 @@ have PPIs or SGIs. Main node required properties: - compatible : should be one of: + "arm,gic-400" "arm,cortex-a15-gic" "arm,cortex-a9-gic" "arm,cortex-a7-gic" diff --git a/Documentation/devicetree/bindings/clock/clock-bindings.txt b/Documentation/devicetree/bindings/clock/clock-bindings.txt index eb65d417f8c..7c52c29d99f 100644 --- a/Documentation/devicetree/bindings/clock/clock-bindings.txt +++ b/Documentation/devicetree/bindings/clock/clock-bindings.txt @@ -5,7 +5,7 @@ Sources of clock signal can be represented by any node in the device tree. Those nodes are designated as clock providers. Clock consumer nodes use a phandle and clock specifier pair to connect clock provider outputs to clock inputs. Similar to the gpio specifiers, a clock -specifier is an array of one more more cells identifying the clock +specifier is an array of zero, one or more cells identifying the clock output on a device. The length of a clock specifier is defined by the value of a #clock-cells property in the clock provider node. diff --git a/Documentation/devicetree/bindings/marvell.txt b/Documentation/devicetree/bindings/marvell.txt index f7a0da6b402..ea2b16ced49 100644 --- a/Documentation/devicetree/bindings/marvell.txt +++ b/Documentation/devicetree/bindings/marvell.txt @@ -79,7 +79,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd. Required properties: - #address-cells : Should be <1> - #size-cells : Should be <0> - - device_type : Should be "mdio" - compatible : Should be "marvell,mv64360-mdio" Example: @@ -87,7 +86,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd. mdio { #address-cells = <1>; #size-cells = <0>; - device_type = "mdio"; compatible = "marvell,mv64360-mdio"; ethernet-phy@0 { @@ -132,7 +130,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd. Ethernet port node Required properties: - - device_type : Should be "network". - compatible : Should be "marvell,mv64360-eth". - reg : Should be <0>, <1>, or <2>, according to which registers within the silicon block the device uses. @@ -145,7 +142,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd. Example Discovery Ethernet port node: ethernet@0 { - device_type = "network"; compatible = "marvell,mv64360-eth"; reg = <0>; interrupts = <32>; @@ -159,7 +155,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd. c) Marvell Discovery PHY nodes Required properties: - - device_type : Should be "ethernet-phy" - interrupts : <a> where a is the interrupt number for this phy. - interrupt-parent : the phandle for the interrupt controller that services interrupts for this device. @@ -167,7 +162,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd. Example Discovery PHY node: ethernet-phy@1 { - device_type = "ethernet-phy"; compatible = "broadcom,bcm5421"; interrupts = <76>; /* GPP 12 */ interrupt-parent = <&PIC>; @@ -271,7 +265,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd. serial port. Required properties: - - device_type : "serial" - compatible : "marvell,mv64360-mpsc" - reg : Offset and length of the register set for this device - sdma : the phandle for the SDMA node used by this port @@ -288,7 +281,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd. Example Discovery MPSCINTR node: mpsc@8000 { - device_type = "serial"; compatible = "marvell,mv64360-mpsc"; reg = <0x8000 0x38>; virtual-reg = <0xf1008000>; diff --git a/Documentation/devicetree/bindings/net/macb.txt b/Documentation/devicetree/bindings/net/macb.txt index 4ff65047bb9..70af2ec12b0 100644 --- a/Documentation/devicetree/bindings/net/macb.txt +++ b/Documentation/devicetree/bindings/net/macb.txt @@ -10,6 +10,10 @@ Required properties: - interrupts: Should contain macb interrupt - phy-mode: String, operation mode of the PHY interface. Supported values are: "mii", "rmii", "gmii", "rgmii". +- clock-names: Tuple listing input clock names. + Required elements: 'pclk', 'hclk' + Optional elements: 'tx_clk' +- clocks: Phandles to input clocks. Optional properties: - local-mac-address: 6 bytes, mac address @@ -22,4 +26,6 @@ Examples: interrupts = <21>; phy-mode = "rmii"; local-mac-address = [3a 0e 03 04 05 06]; + clock-names = "pclk", "hclk", "tx_clk"; + clocks = <&clkc 30>, <&clkc 30>, <&clkc 13>; }; diff --git a/Documentation/devicetree/bindings/net/marvell-orion-net.txt b/Documentation/devicetree/bindings/net/marvell-orion-net.txt index a73b79f227e..c233b611424 100644 --- a/Documentation/devicetree/bindings/net/marvell-orion-net.txt +++ b/Documentation/devicetree/bindings/net/marvell-orion-net.txt @@ -32,7 +32,6 @@ Optional controller properties: * Ethernet port node Required port properties: - - device_type: shall be "network". - compatible: shall be one of "marvell,orion-eth-port", "marvell,kirkwood-eth-port". - reg: port number relative to ethernet controller, shall be 0, 1, or 2. @@ -61,7 +60,6 @@ or mdio-bus { ... ethphy: ethernet-phy@8 { - device_type = "ethernet-phy"; ... }; }; @@ -75,7 +73,6 @@ eth: ethernet-controller@72000 { marvell,tx-checksum-limit = <1600>; ethernet@0 { - device_type = "network"; compatible = "marvell,orion-eth-port"; reg = <0>; interrupts = <29>; diff --git a/Documentation/devicetree/bindings/net/phy.txt b/Documentation/devicetree/bindings/net/phy.txt index 7cd18fbfcf7..85de6107b98 100644 --- a/Documentation/devicetree/bindings/net/phy.txt +++ b/Documentation/devicetree/bindings/net/phy.txt @@ -2,7 +2,6 @@ PHY nodes Required properties: - - device_type : Should be "ethernet-phy" - interrupts : <a b> where a is the interrupt number and b is a field that represents an encoding of the sense and level information for the interrupt. This should be encoded based on @@ -11,8 +10,6 @@ Required properties: - interrupt-parent : the phandle for the interrupt controller that services interrupts for this device. - reg : The ID number for the phy, usually a small integer - - linux,phandle : phandle for this node; likely referenced by an - ethernet controller node. Optional Properties: @@ -27,9 +24,7 @@ Example: ethernet-phy@0 { compatible = "ethernet-phy-ieee802.3-c22"; - linux,phandle = <2452000>; interrupt-parent = <40000>; interrupts = <35 1>; reg = <0>; - device_type = "ethernet-phy"; }; diff --git a/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt b/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt index 0e426944658..29b28b8f9a8 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt +++ b/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt @@ -10,7 +10,6 @@ Currently defined compatibles: Example: ethernet@11300 { - device_type = "network"; compatible = "fsl,mpc8272-fcc-enet", "fsl,cpm2-fcc-enet"; reg = <11300 20 8400 100 11390 1>; @@ -33,7 +32,6 @@ fsl,mdc-pin : pin of port C controlling mdio clock Example: mdio@10d40 { - device_type = "mdio"; compatible = "fsl,mpc8272ads-mdio-bitbang", "fsl,mpc8272-mdio-bitbang", "fsl,cpm2-mdio-bitbang"; diff --git a/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe/pincfg.txt b/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe/pincfg.txt index c5b43061db3..ec6ee2e864a 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe/pincfg.txt +++ b/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe/pincfg.txt @@ -1,8 +1,6 @@ * Pin configuration nodes Required properties: -- linux,phandle : phandle of this node; likely referenced by a QE - device. - pio-map : array of pin configurations. Each pin is defined by 6 integers. The six numbers are respectively: port, pin, dir, open_drain, assignment, has_irq. @@ -29,7 +27,6 @@ Required properties: Example: ucc_pin@01 { - linux,phandle = <140001>; pio-map = < /* port pin dir open_drain assignment has_irq */ 0 3 1 0 1 0 /* TxD0 */ diff --git a/Documentation/devicetree/bindings/serial/vt8500-uart.txt b/Documentation/devicetree/bindings/serial/vt8500-uart.txt new file mode 100644 index 00000000000..795c393d09c --- /dev/null +++ b/Documentation/devicetree/bindings/serial/vt8500-uart.txt @@ -0,0 +1,26 @@ +* VIA VT8500 and WonderMedia WM8xxx UART Controller + +Required properties: +- compatible: should be "via,vt8500-uart" + +- reg: base physical address of the controller and length of memory mapped + region. + +- interrupts: hardware interrupt number + +- clocks: shall be the input parent clock phandle for the clock. This should + be the 24Mhz reference clock. + +Aliases may be defined to ensure the correct ordering of the uarts. + +Example: + aliases { + serial0 = &uart0; + }; + + uart0: serial@d8200000 { + compatible = "via,vt8500-uart"; + reg = <0xd8200000 0x1040>; + interrupts = <32>; + clocks = <&clkuart0>; + }; diff --git a/Documentation/devicetree/bindings/submitting-patches.txt b/Documentation/devicetree/bindings/submitting-patches.txt new file mode 100644 index 00000000000..042a0273b8b --- /dev/null +++ b/Documentation/devicetree/bindings/submitting-patches.txt @@ -0,0 +1,38 @@ + + Submitting devicetree (DT) binding patches + +I. For patch submitters + + 0) Normal patch submission rules from Documentation/SubmittingPatches + applies. + + 1) The Documentation/ portion of the patch should be a separate patch. + + 2) Submit the entire series to the devicetree mailinglist at + + devicetree@vger.kernel.org + +II. For kernel maintainers + + 1) If you aren't comfortable reviewing a given binding, reply to it and ask + the devicetree maintainers for guidance. This will help them prioritize + which ones to review and which ones are ok to let go. + + 2) For driver (not subsystem) bindings: If you are comfortable with the + binding, and it hasn't received an Acked-by from the devicetree + maintainers after a few weeks, go ahead and take it. + + Subsystem bindings (anything affecting more than a single device) + then getting a devicetree maintainer to review it is required. + + 3) For a series going though multiple trees, the binding patch should be + kept with the driver using the binding. + +III. Notes + + 0) Please see ...bindings/ABI.txt for details regarding devicetree ABI. + + 1) This document is intended as a general familiarization with the process as + decided at the 2013 Kernel Summit. When in doubt, the current word of the + devicetree maintainers overrules this document. In that situation, a patch + updating this document would be appreciated. diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 520596da795..5780ffcd79a 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -27,13 +27,16 @@ cortina Cortina Systems, Inc. dallas Maxim Integrated Products (formerly Dallas Semiconductor) davicom DAVICOM Semiconductor, Inc. denx Denx Software Engineering +edt Emerging Display Technologies emmicro EM Microelectronic +epfl Ecole Polytechnique Fédérale de Lausanne epson Seiko Epson Corp. est ESTeem Wireless Modems fsl Freescale Semiconductor GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc. gef GE Fanuc Intelligent Platforms Embedded Systems, Inc. gmt Global Mixed-mode Technology, Inc. +gumstix Gumstix, Inc. haoyu Haoyu Microelectronic Co. Ltd. hisilicon Hisilicon Limited. hp Hewlett Packard @@ -42,6 +45,7 @@ idt Integrated Device Technologies, Inc. img Imagination Technologies Ltd. intercontrol Inter Control Group isl Intersil +karo Ka-Ro electronics GmbH lg LG Corporation linux Linux-specific binding lsi LSI Corp. (LSI Logic) @@ -64,6 +68,7 @@ ralink Mediatek/Ralink Technology Corp. ramtron Ramtron International realtek Realtek Semiconductor Corp. renesas Renesas Electronics Corporation +rockchip Fuzhou Rockchip Electronics Co., Ltd samsung Samsung Semiconductor sbs Smart Battery System schindler Schindler diff --git a/Documentation/devicetree/booting-without-of.txt b/Documentation/devicetree/booting-without-of.txt index b2fb2f5e192..1f013bd0d32 100644 --- a/Documentation/devicetree/booting-without-of.txt +++ b/Documentation/devicetree/booting-without-of.txt @@ -1364,19 +1364,16 @@ Appendix A - Sample SOC node for MPC8540 phy0: ethernet-phy@0 { interrupts = <5 1>; reg = <0>; - device_type = "ethernet-phy"; }; phy1: ethernet-phy@1 { interrupts = <5 1>; reg = <1>; - device_type = "ethernet-phy"; }; phy3: ethernet-phy@3 { interrupts = <7 1>; reg = <3>; - device_type = "ethernet-phy"; }; }; }; |