From 0a68214b76ca858c46b73d2e9792671f0ac0b7e2 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 9 May 2012 18:57:57 +0100 Subject: ARM: DT: Add binding for GIC virtualization extentions (VGIC) The GICv2 can have virtualization extension support, consisting of an additional set of registers and interrupts. Add the necessary binding to the GIC DT documentation. Signed-off-by: Marc Zyngier Acked-by: David Vrabel Signed-off-by: Grant Likely --- Documentation/devicetree/bindings/arm/gic.txt | 35 +++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/arm/gic.txt b/Documentation/devicetree/bindings/arm/gic.txt index 9b4b82a721b6..62eb8df1e08d 100644 --- a/Documentation/devicetree/bindings/arm/gic.txt +++ b/Documentation/devicetree/bindings/arm/gic.txt @@ -11,7 +11,9 @@ have PPIs or SGIs. Main node required properties: - compatible : should be one of: + "arm,cortex-a15-gic" "arm,cortex-a9-gic" + "arm,cortex-a7-gic" "arm,arm11mp-gic" - interrupt-controller : Identifies the node as an interrupt controller - #interrupt-cells : Specifies the number of cells needed to encode an @@ -39,8 +41,9 @@ Main node required properties: the GIC cpu interface register base and size. Optional -- interrupts : Interrupt source of the parent interrupt controller. Only - present on secondary GICs. +- interrupts : Interrupt source of the parent interrupt controller on + secondary GICs, or VGIC maintainance interrupt on primary GIC (see + below). - cpu-offset : per-cpu offset within the distributor and cpu interface regions, used when the GIC doesn't have banked registers. The offset is @@ -57,3 +60,31 @@ Example: <0xfff10100 0x100>; }; + +* GIC virtualization extensions (VGIC) + +For ARM cores that support the virtualization extensions, additional +properties must be described (they only exist if the GIC is the +primary interrupt controller). + +Required properties: + +- reg : Additional regions specifying the base physical address and + size of the VGIC registers. The first additional region is the GIC + virtual interface control register base and size. The 2nd additional + region is the GIC virtual cpu interface register base and size. + +- interrupts : VGIC maintainance interrupt. + +Example: + + interrupt-controller@2c001000 { + compatible = "arm,cortex-a15-gic"; + #interrupt-cells = <3>; + interrupt-controller; + reg = <0x2c001000 0x1000>, + <0x2c002000 0x1000>, + <0x2c004000 0x2000>, + <0x2c006000 0x2000>; + interrupts = <1 9 0xf04>; + }; -- cgit v1.2.3 From 99fc012b938c6f69213108c440756f6fd3d457d0 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Thu, 17 May 2012 15:18:31 -0600 Subject: dt: add vendor prefix for EM Microelectronics Add "emmicro" as the prefix for EM Microelectronics. A web search implies this is a pretty unique and relevant match. Signed-off-by: Stephen Warren Signed-off-by: Grant Likely --- Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 82ac057a24a9..39116147b774 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -13,6 +13,7 @@ chrp Common Hardware Reference Platform cortina Cortina Systems, Inc. dallas Maxim Integrated Products (formerly Dallas Semiconductor) denx Denx Software Engineering +emmicro EM Microelectronic epson Seiko Epson Corp. est ESTeem Wireless Modems fsl Freescale Semiconductor -- cgit v1.2.3 From 3679362355f6ec6abdbd8f38da3d89f94746a2a5 Mon Sep 17 00:00:00 2001 From: Roland Stigge Date: Wed, 16 May 2012 22:33:55 +0200 Subject: dt/documentation: Fix value format description Numeric values in dts files can be specified in decimal and hex (the latter prefixed 0x). The current documentation is updated with this patch to prevent confusion about what is meant with values without "0x" (previously hex, now dec). Signed-off-by: Roland Stigge Acked-by: Rob Landley Signed-off-by: Grant Likely --- Documentation/devicetree/booting-without-of.txt | 55 +++++++++++++------------ 1 file changed, 28 insertions(+), 27 deletions(-) (limited to 'Documentation') diff --git a/Documentation/devicetree/booting-without-of.txt b/Documentation/devicetree/booting-without-of.txt index da0bfeb4253d..d4d66757354e 100644 --- a/Documentation/devicetree/booting-without-of.txt +++ b/Documentation/devicetree/booting-without-of.txt @@ -551,12 +551,13 @@ Here is an example of a simple device-tree. In this example, an "o" designates a node followed by the node unit name. Properties are presented with their name followed by their content. "content" represents an ASCII string (zero terminated) value, while -represents a 32-bit hexadecimal value. The various nodes in this -example will be discussed in a later chapter. At this point, it is -only meant to give you a idea of what a device-tree looks like. I have -purposefully kept the "name" and "linux,phandle" properties which -aren't necessary in order to give you a better idea of what the tree -looks like in practice. +represents a 32-bit value, specified in decimal or hexadecimal (the +latter prefixed 0x). The various nodes in this example will be +discussed in a later chapter. At this point, it is only meant to give +you a idea of what a device-tree looks like. I have purposefully kept +the "name" and "linux,phandle" properties which aren't necessary in +order to give you a better idea of what the tree looks like in +practice. / o device-tree |- name = "device-tree" @@ -576,14 +577,14 @@ looks like in practice. | |- name = "PowerPC,970" | |- device_type = "cpu" | |- reg = <0> - | |- clock-frequency = <5f5e1000> + | |- clock-frequency = <0x5f5e1000> | |- 64-bit | |- linux,phandle = <2> | o memory@0 | |- name = "memory" | |- device_type = "memory" - | |- reg = <00000000 00000000 00000000 20000000> + | |- reg = <0x00000000 0x00000000 0x00000000 0x20000000> | |- linux,phandle = <3> | o chosen @@ -1010,8 +1011,8 @@ compatibility. #size-cells = <1>; #interrupt-cells = <2>; device_type = "soc"; - ranges = <00000000 e0000000 00100000> - reg = ; + ranges = <0x00000000 0xe0000000 0x00100000> + reg = <0xe0000000 0x00003000>; bus-frequency = <0>; } @@ -1085,16 +1086,16 @@ supported currently at the toplevel. * terminated string */ - property2 = <1234abcd>; /* define a property containing a + property2 = <0x1234abcd>; /* define a property containing a * numerical 32-bit value (hexadecimal) */ - property3 = <12345678 12345678 deadbeef>; + property3 = <0x12345678 0x12345678 0xdeadbeef>; /* define a property containing 3 * numerical 32-bit values (cells) in * hexadecimal */ - property4 = [0a 0b 0c 0d de ea ad be ef]; + property4 = [0x0a 0x0b 0x0c 0x0d 0xde 0xea 0xad 0xbe 0xef]; /* define a property whose content is * an arbitrary array of bytes */ @@ -1350,10 +1351,10 @@ Appendix A - Sample SOC node for MPC8540 model = "TSEC"; compatible = "gianfar", "simple-bus"; reg = <0x24000 0x1000>; - local-mac-address = [ 00 E0 0C 00 73 00 ]; - interrupts = <29 2 30 2 34 2>; + local-mac-address = [ 0x00 0xE0 0x0C 0x00 0x73 0x00 ]; + interrupts = <0x29 2 0x30 2 0x34 2>; phy-handle = <&phy0>; - sleep = <&pmc 00000080>; + sleep = <&pmc 0x00000080>; ranges; mdio@24520 { @@ -1385,10 +1386,10 @@ Appendix A - Sample SOC node for MPC8540 model = "TSEC"; compatible = "gianfar"; reg = <0x25000 0x1000>; - local-mac-address = [ 00 E0 0C 00 73 01 ]; - interrupts = <13 2 14 2 18 2>; + local-mac-address = [ 0x00 0xE0 0x0C 0x00 0x73 0x01 ]; + interrupts = <0x13 2 0x14 2 0x18 2>; phy-handle = <&phy1>; - sleep = <&pmc 00000040>; + sleep = <&pmc 0x00000040>; }; ethernet@26000 { @@ -1396,17 +1397,17 @@ Appendix A - Sample SOC node for MPC8540 model = "FEC"; compatible = "gianfar"; reg = <0x26000 0x1000>; - local-mac-address = [ 00 E0 0C 00 73 02 ]; - interrupts = <41 2>; + local-mac-address = [ 0x00 0xE0 0x0C 0x00 0x73 0x02 ]; + interrupts = <0x41 2>; phy-handle = <&phy3>; - sleep = <&pmc 00000020>; + sleep = <&pmc 0x00000020>; }; serial@4500 { #address-cells = <1>; #size-cells = <1>; compatible = "fsl,mpc8540-duart", "simple-bus"; - sleep = <&pmc 00000002>; + sleep = <&pmc 0x00000002>; ranges; serial@4500 { @@ -1414,7 +1415,7 @@ Appendix A - Sample SOC node for MPC8540 compatible = "ns16550"; reg = <0x4500 0x100>; clock-frequency = <0>; - interrupts = <42 2>; + interrupts = <0x42 2>; }; serial@4600 { @@ -1422,7 +1423,7 @@ Appendix A - Sample SOC node for MPC8540 compatible = "ns16550"; reg = <0x4600 0x100>; clock-frequency = <0>; - interrupts = <42 2>; + interrupts = <0x42 2>; }; }; @@ -1436,11 +1437,11 @@ Appendix A - Sample SOC node for MPC8540 }; i2c@3000 { - interrupts = <43 2>; + interrupts = <0x43 2>; reg = <0x3000 0x100>; compatible = "fsl-i2c"; dfsrr; - sleep = <&pmc 00000004>; + sleep = <&pmc 0x00000004>; }; pmc: power@e0070 { -- cgit v1.2.3