diff --git a/Documentation/devicetree/bindings/arm/vexpress.txt b/Documentation/devicetree/bindings/arm/vexpress.txt index 5d9996b9eabf..ae49161e478a 100644 --- a/Documentation/devicetree/bindings/arm/vexpress.txt +++ b/Documentation/devicetree/bindings/arm/vexpress.txt @@ -141,14 +141,19 @@ can be used to obtain required phandle in the tile's "aliases" node: - SP804 timers: v2m_timer01 and v2m_timer23 -Current Linux implementation requires a "arm,v2m_timer" alias -pointing at one of the motherboard's SP804 timers, if it is to be -used as the system timer. This alias should be defined in the -motherboard files. - -The tile description must define "ranges", "interrupt-map-mask" and -"interrupt-map" properties to translate the motherboard's address -and interrupt space into one used by the tile's processor. +The tile description should define a "smb" node, describing the +Static Memory Bus between the tile and motherboard. It must define +the following properties: +- "simple-bus" compatible value (to ensure creation of the children) + compatible = "simple-bus"; +- mapping of the SMB CS/offset addresses into main address space: + #address-cells = <2>; + #size-cells = <1>; + ranges = <...>; +- interrupts mapping: + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 63>; + interrupt-map = <...>; Example of a VE tile description (simplified) @@ -200,13 +205,20 @@ Example of a VE tile description (simplified) }; }; - motherboard { + smb { + compatible = "simple-bus"; + + #address-cells = <2>; + #size-cells = <1>; /* CS0 is visible at 0x08000000 */ ranges = <0 0 0x08000000 0x04000000>; + + #interrupt-cells = <1>; interrupt-map-mask = <0 0 63>; /* Active high IRQ 0 is connected to GIC's SPI0 */ interrupt-map = <0 0 0 &gic 0 0 4>; + + /include/ "vexpress-v2m-rs1.dtsi" }; }; -/include/ "vexpress-v2m-rs1.dtsi" diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi index 9a7b6922f83b..ac870fb3fa0d 100644 --- a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi +++ b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi @@ -17,18 +17,16 @@ * CHANGES TO vexpress-v2m.dtsi! */ -/ { - aliases { - arm,v2m_timer = &v2m_timer01; - }; - motherboard { - compatible = "simple-bus"; + model = "V2M-P1"; + arm,hbi = <0x190>; arm,vexpress,site = <0>; arm,v2m-memory-map = "rs1"; + compatible = "arm,vexpress,v2m-p1", "simple-bus"; #address-cells = <2>; /* SMB chipselect number and offset */ #size-cells = <1>; #interrupt-cells = <1>; + ranges; flash@0,00000000 { compatible = "arm,vexpress-flash", "cfi-flash"; @@ -340,4 +338,3 @@ dvimode@0 { }; }; }; -}; diff --git a/arch/arm/boot/dts/vexpress-v2m.dtsi b/arch/arm/boot/dts/vexpress-v2m.dtsi index 4d321a832dbd..f1420368355b 100644 --- a/arch/arm/boot/dts/vexpress-v2m.dtsi +++ b/arch/arm/boot/dts/vexpress-v2m.dtsi @@ -17,17 +17,15 @@ * CHANGES TO vexpress-v2m-rs1.dtsi! */ -/ { - aliases { - arm,v2m_timer = &v2m_timer01; - }; - motherboard { - compatible = "simple-bus"; + model = "V2M-P1"; + arm,hbi = <0x190>; arm,vexpress,site = <0>; + compatible = "arm,vexpress,v2m-p1", "simple-bus"; #address-cells = <2>; /* SMB chipselect number and offset */ #size-cells = <1>; #interrupt-cells = <1>; + ranges; flash@0,00000000 { compatible = "arm,vexpress-flash", "cfi-flash"; @@ -339,4 +337,3 @@ dvimode@0 { }; }; }; -}; diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts index 4bbed10de45b..a3d37ec2655d 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts @@ -220,7 +220,11 @@ energy@0 { }; }; - motherboard { + smb { + compatible = "simple-bus"; + + #address-cells = <2>; + #size-cells = <1>; ranges = <0 0 0 0x08000000 0x04000000>, <1 0 0 0x14000000 0x04000000>, <2 0 0 0x18000000 0x04000000>, @@ -228,6 +232,7 @@ motherboard { <4 0 0 0x0c000000 0x04000000>, <5 0 0 0x10000000 0x04000000>; + #interrupt-cells = <1>; interrupt-map-mask = <0 0 63>; interrupt-map = <0 0 0 &gic 0 0 4>, <0 0 1 &gic 0 1 4>, @@ -272,7 +277,7 @@ motherboard { <0 0 40 &gic 0 40 4>, <0 0 41 &gic 0 41 4>, <0 0 42 &gic 0 42 4>; + + /include/ "vexpress-v2m-rs1.dtsi" }; }; - -/include/ "vexpress-v2m-rs1.dtsi" diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts index 3f4e1d00f4be..1fc405a9ecfb 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts @@ -305,7 +305,11 @@ energy@2 { }; }; - motherboard { + smb { + compatible = "simple-bus"; + + #address-cells = <2>; + #size-cells = <1>; ranges = <0 0 0 0x08000000 0x04000000>, <1 0 0 0x14000000 0x04000000>, <2 0 0 0x18000000 0x04000000>, @@ -313,6 +317,7 @@ motherboard { <4 0 0 0x0c000000 0x04000000>, <5 0 0 0x10000000 0x04000000>; + #interrupt-cells = <1>; interrupt-map-mask = <0 0 63>; interrupt-map = <0 0 0 &gic 0 0 4>, <0 0 1 &gic 0 1 4>, @@ -357,7 +362,7 @@ motherboard { <0 0 40 &gic 0 40 4>, <0 0 41 &gic 0 41 4>, <0 0 42 &gic 0 42 4>; + + /include/ "vexpress-v2m-rs1.dtsi" }; }; - -/include/ "vexpress-v2m-rs1.dtsi" diff --git a/arch/arm/boot/dts/vexpress-v2p-ca5s.dts b/arch/arm/boot/dts/vexpress-v2p-ca5s.dts index f3c1f2a44072..6328cbc71d30 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca5s.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca5s.dts @@ -182,7 +182,11 @@ temp@0 { }; }; - motherboard { + smb { + compatible = "simple-bus"; + + #address-cells = <2>; + #size-cells = <1>; ranges = <0 0 0x08000000 0x04000000>, <1 0 0x14000000 0x04000000>, <2 0 0x18000000 0x04000000>, @@ -190,6 +194,7 @@ motherboard { <4 0 0x0c000000 0x04000000>, <5 0 0x10000000 0x04000000>; + #interrupt-cells = <1>; interrupt-map-mask = <0 0 63>; interrupt-map = <0 0 0 &gic 0 0 4>, <0 0 1 &gic 0 1 4>, @@ -234,7 +239,7 @@ motherboard { <0 0 40 &gic 0 40 4>, <0 0 41 &gic 0 41 4>, <0 0 42 &gic 0 42 4>; + + /include/ "vexpress-v2m-rs1.dtsi" }; }; - -/include/ "vexpress-v2m-rs1.dtsi" diff --git a/arch/arm/boot/dts/vexpress-v2p-ca9.dts b/arch/arm/boot/dts/vexpress-v2p-ca9.dts index 005259db541d..1420bb14d95c 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca9.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca9.dts @@ -265,13 +265,18 @@ power@1 { }; }; - motherboard { + smb { + compatible = "simple-bus"; + + #address-cells = <2>; + #size-cells = <1>; ranges = <0 0 0x40000000 0x04000000>, <1 0 0x44000000 0x04000000>, <2 0 0x48000000 0x04000000>, <3 0 0x4c000000 0x04000000>, <7 0 0x10000000 0x00020000>; + #interrupt-cells = <1>; interrupt-map-mask = <0 0 63>; interrupt-map = <0 0 0 &gic 0 0 4>, <0 0 1 &gic 0 1 4>, @@ -316,7 +321,7 @@ motherboard { <0 0 40 &gic 0 40 4>, <0 0 41 &gic 0 41 4>, <0 0 42 &gic 0 42 4>; + + /include/ "vexpress-v2m.dtsi" }; }; - -/include/ "vexpress-v2m.dtsi" diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c index 99d4172816be..4e168e81fb42 100644 --- a/arch/arm/mach-vexpress/v2m.c +++ b/arch/arm/mach-vexpress/v2m.c @@ -446,17 +446,20 @@ static void __init v2m_dt_init_irq(void) static void __init v2m_dt_timer_init(void) { - struct device_node *node; - const char *path; - int err; + struct device_node *node = NULL; vexpress_clk_of_init(); - err = of_property_read_string(of_aliases, "arm,v2m_timer", &path); - if (WARN_ON(err)) - return; - node = of_find_node_by_path(path); - v2m_sp804_init(of_iomap(node, 0), irq_of_parse_and_map(node, 0)); + do { + node = of_find_compatible_node(node, NULL, "arm,sp804"); + } while (node && vexpress_get_site_by_node(node) != VEXPRESS_SITE_MB); + if (node) { + pr_info("Using SP804 '%s' as a clock & events source\n", + node->full_name); + v2m_sp804_init(of_iomap(node, 0), + irq_of_parse_and_map(node, 0)); + } + if (arch_timer_of_register() != 0) twd_local_timer_of_register();