From be37a8b5a371850c6367bc984ee61d9de3eacf6a Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 30 Jun 2014 17:09:45 -0500 Subject: devicetree: bindings: document Broadcom CPU enable method Broadcom mobile SoCs use a ROM-implemented holding pen for controlled boot of secondary cores. A special register is used to communicate to the ROM that a secondary core should start executing kernel code. This enable method is currently used for members of the bcm281xx and bcm21664 SoC families. The use of an enable method also allows the SMP operation vector to be assigned as a result of device tree content for these SoCs. Signed-off-by: Alex Elder Signed-off-by: Matt Porter --- .../bindings/arm/bcm/brcm,bcm11351-cpu-method | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/bcm/brcm,bcm11351-cpu-method diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm11351-cpu-method b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm11351-cpu-method new file mode 100644 index 000000000000..8240c023e202 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm11351-cpu-method @@ -0,0 +1,36 @@ +Broadcom Kona Family CPU Enable Method +-------------------------------------- +This binding defines the enable method used for starting secondary +CPUs in the following Broadcom SoCs: + BCM11130, BCM11140, BCM11351, BCM28145, BCM28155, BCM21664 + +The enable method is specified by defining the following required +properties in the "cpus" device tree node: + - enable-method = "brcm,bcm11351-cpu-method"; + - secondary-boot-reg = <...>; + +The secondary-boot-reg property is a u32 value that specifies the +physical address of the register used to request the ROM holding pen +code release a secondary CPU. The value written to the register is +formed by encoding the target CPU id into the low bits of the +physical start address it should jump to. + +Example: + cpus { + #address-cells = <1>; + #size-cells = <0>; + enable-method = "brcm,bcm11351-cpu-method"; + secondary-boot-reg = <0x3500417c>; + + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a9"; + reg = <0>; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a9"; + reg = <1>; + }; + }; -- cgit v1.2.3 From a62451c3f91af33e47a17f17ae65de76774b2854 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 30 Jun 2014 17:15:39 -0500 Subject: ARM: dts: enable SMP support for bcm28155 Define nodes representing the two Cortex A9 CPUs in a bcm28155 SoC. Signed-off-by: Ray Jui Signed-off-by: Alex Elder Signed-off-by: Matt Porter --- arch/arm/boot/dts/bcm11351.dtsi | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm/boot/dts/bcm11351.dtsi b/arch/arm/boot/dts/bcm11351.dtsi index 6b05ae6d476f..2ddaa5136611 100644 --- a/arch/arm/boot/dts/bcm11351.dtsi +++ b/arch/arm/boot/dts/bcm11351.dtsi @@ -27,6 +27,25 @@ bootargs = "console=ttyS0,115200n8"; }; + cpus { + #address-cells = <1>; + #size-cells = <0>; + enable-method = "brcm,bcm11351-cpu-method"; + secondary-boot-reg = <0x3500417c>; + + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a9"; + reg = <0>; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a9"; + reg = <1>; + }; + }; + gic: interrupt-controller@3ff00100 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; -- cgit v1.2.3 From 1d3138b75e3af493261c7a1e085b66b34c74dfbb Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 30 Jun 2014 17:15:40 -0500 Subject: ARM: dts: enable SMP support for bcm21664 Define nodes representing the two Cortex A9 CPUs in a bcm21644 SoC. Signed-off-by: Alex Elder Signed-off-by: Matt Porter --- arch/arm/boot/dts/bcm21664.dtsi | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm/boot/dts/bcm21664.dtsi b/arch/arm/boot/dts/bcm21664.dtsi index 8b366822bb43..2016b72a8fb7 100644 --- a/arch/arm/boot/dts/bcm21664.dtsi +++ b/arch/arm/boot/dts/bcm21664.dtsi @@ -27,6 +27,25 @@ bootargs = "console=ttyS0,115200n8"; }; + cpus { + #address-cells = <1>; + #size-cells = <0>; + enable-method = "brcm,bcm11351-cpu-method"; + secondary-boot-reg = <0x35004178>; + + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a9"; + reg = <0>; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a9"; + reg = <1>; + }; + }; + gic: interrupt-controller@3ff00100 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; -- cgit v1.2.3 From 0a540d4ba6af544121ca04cbb8ee14212a6e645a Mon Sep 17 00:00:00 2001 From: Marc Carino Date: Fri, 6 Sep 2013 13:40:19 -0700 Subject: ARM: brcmstb: add CPU binding for Broadcom Brahma15 Add the Broadcom Brahma B15 CPU to the DT CPU binding list. Signed-off-by: Marc Carino Acked-by: Arnd Bergmann Signed-off-by: Brian Norris Signed-off-by: Matt Porter --- Documentation/devicetree/bindings/arm/cpus.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt index 1fe72a0778cd..06fd7bba830c 100644 --- a/Documentation/devicetree/bindings/arm/cpus.txt +++ b/Documentation/devicetree/bindings/arm/cpus.txt @@ -163,6 +163,7 @@ nodes to be present and contain the properties described below. "arm,cortex-r4" "arm,cortex-r5" "arm,cortex-r7" + "brcm,brahma-b15" "faraday,fa526" "intel,sa110" "intel,sa1100" @@ -184,6 +185,7 @@ nodes to be present and contain the properties described below. can be one of: "allwinner,sun6i-a31" "arm,psci" + "brcm,brahma-b15" "marvell,armada-375-smp" "marvell,armada-380-smp" "marvell,armada-xp-smp" -- cgit v1.2.3 From c5cc8bb5bd7089193e22df32b63332502a63676a Mon Sep 17 00:00:00 2001 From: Marc Carino Date: Fri, 6 Sep 2013 13:41:35 -0700 Subject: ARM: brcmstb: add misc. DT bindings for brcmstb Document the bindings that the Broadcom STB platform needs for proper bootup. Signed-off-by: Marc Carino Acked-by: Florian Fainelli Acked-by: Arnd Bergmann Signed-off-by: Brian Norris Signed-off-by: Matt Porter --- .../devicetree/bindings/arm/brcm-brcmstb.txt | 95 ++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/brcm-brcmstb.txt diff --git a/Documentation/devicetree/bindings/arm/brcm-brcmstb.txt b/Documentation/devicetree/bindings/arm/brcm-brcmstb.txt new file mode 100644 index 000000000000..3c436cc4f35d --- /dev/null +++ b/Documentation/devicetree/bindings/arm/brcm-brcmstb.txt @@ -0,0 +1,95 @@ +ARM Broadcom STB platforms Device Tree Bindings +----------------------------------------------- +Boards with Broadcom Brahma15 ARM-based BCMxxxx (generally BCM7xxx variants) +SoC shall have the following DT organization: + +Required root node properties: + - compatible: "brcm,bcm", "brcm,brcmstb" + +example: +/ { + #address-cells = <2>; + #size-cells = <2>; + model = "Broadcom STB (bcm7445)"; + compatible = "brcm,bcm7445", "brcm,brcmstb"; + +Further, syscon nodes that map platform-specific registers used for general +system control is required: + + - compatible: "brcm,bcm-sun-top-ctrl", "syscon" + - compatible: "brcm,bcm-hif-cpubiuctrl", "syscon" + - compatible: "brcm,bcm-hif-continuation", "syscon" + +example: + rdb { + #address-cells = <1>; + #size-cells = <1>; + compatible = "simple-bus"; + ranges = <0 0x00 0xf0000000 0x1000000>; + + sun_top_ctrl: syscon@404000 { + compatible = "brcm,bcm7445-sun-top-ctrl", "syscon"; + reg = <0x404000 0x51c>; + }; + + hif_cpubiuctrl: syscon@3e2400 { + compatible = "brcm,bcm7445-hif-cpubiuctrl", "syscon"; + reg = <0x3e2400 0x5b4>; + }; + + hif_continuation: syscon@452000 { + compatible = "brcm,bcm7445-hif-continuation", "syscon"; + reg = <0x452000 0x100>; + }; + }; + +Lastly, nodes that allow for support of SMP initialization and reboot are +required: + +smpboot +------- +Required properties: + + - compatible + The string "brcm,brcmstb-smpboot". + + - syscon-cpu + A phandle / integer array property which lets the BSP know the location + of certain CPU power-on registers. + + The layout of the property is as follows: + o a phandle to the "hif_cpubiuctrl" syscon node + o offset to the base CPU power zone register + o offset to the base CPU reset register + + - syscon-cont + A phandle pointing to the syscon node which describes the CPU boot + continuation registers. + o a phandle to the "hif_continuation" syscon node + +example: + smpboot { + compatible = "brcm,brcmstb-smpboot"; + syscon-cpu = <&hif_cpubiuctrl 0x88 0x178>; + syscon-cont = <&hif_continuation>; + }; + +reboot +------- +Required properties + + - compatible + The string property "brcm,brcmstb-reboot". + + - syscon + A phandle / integer array that points to the syscon node which describes + the general system reset registers. + o a phandle to "sun_top_ctrl" + o offset to the "reset source enable" register + o offset to the "software master reset" register + +example: + reboot { + compatible = "brcm,brcmstb-reboot"; + syscon = <&sun_top_ctrl 0x304 0x308>; + }; -- cgit v1.2.3 From f80b71397d09d72222df6c6c2bf39a8a93351b37 Mon Sep 17 00:00:00 2001 From: Marc Carino Date: Fri, 6 Sep 2013 13:44:19 -0700 Subject: ARM: brcmstb: gic: add compatible string for Broadcom Brahma15 Document the Broadcom Brahma B15 GIC implementation as compatible with the ARM GIC standard. Signed-off-by: Marc Carino Acked-by: Florian Fainelli Acked-by: Arnd Bergmann Signed-off-by: Brian Norris Signed-off-by: Matt Porter --- Documentation/devicetree/bindings/arm/gic.txt | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/arm/gic.txt b/Documentation/devicetree/bindings/arm/gic.txt index 5573c08d3180..c7d2fa156678 100644 --- a/Documentation/devicetree/bindings/arm/gic.txt +++ b/Documentation/devicetree/bindings/arm/gic.txt @@ -16,6 +16,7 @@ Main node required properties: "arm,cortex-a9-gic" "arm,cortex-a7-gic" "arm,arm11mp-gic" + "brcm,brahma-b15-gic" - interrupt-controller : Identifies the node as an interrupt controller - #interrupt-cells : Specifies the number of cells needed to encode an interrupt source. The type shall be a and the value shall be 3. -- cgit v1.2.3 From 79187a8e242046a0525a296509e80c5ee24fbaf1 Mon Sep 17 00:00:00 2001 From: Marc Carino Date: Wed, 26 Feb 2014 01:27:21 -0800 Subject: ARM: brcmstb: dts: add a reference DTS for Broadcom 7445 Add a sample DTS which will allow bootup of a board populated with the BCM7445 chip. Signed-off-by: Marc Carino Acked-by: Arnd Bergmann Signed-off-by: Brian Norris Cc: Matt Porter Signed-off-by: Matt Porter --- arch/arm/boot/dts/Makefile | 2 + arch/arm/boot/dts/bcm7445-bcm97445svmb.dts | 14 ++++ arch/arm/boot/dts/bcm7445.dtsi | 111 +++++++++++++++++++++++++++++ 3 files changed, 127 insertions(+) create mode 100644 arch/arm/boot/dts/bcm7445-bcm97445svmb.dts create mode 100644 arch/arm/boot/dts/bcm7445.dtsi diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index adb5ed9e269e..38439ca9b361 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -59,6 +59,8 @@ dtb-$(CONFIG_ARCH_BERLIN) += \ berlin2-sony-nsz-gs7.dtb \ berlin2cd-google-chromecast.dtb \ berlin2q-marvell-dmp.dtb +dtb-$(CONFIG_ARCH_BRCMSTB) += \ + bcm7445-bcm97445svmb.dtb dtb-$(CONFIG_ARCH_DAVINCI) += da850-enbw-cmc.dtb \ da850-evm.dtb dtb-$(CONFIG_ARCH_EFM32) += efm32gg-dk3750.dtb diff --git a/arch/arm/boot/dts/bcm7445-bcm97445svmb.dts b/arch/arm/boot/dts/bcm7445-bcm97445svmb.dts new file mode 100644 index 000000000000..9eec2ac1112f --- /dev/null +++ b/arch/arm/boot/dts/bcm7445-bcm97445svmb.dts @@ -0,0 +1,14 @@ +/dts-v1/; +#include "bcm7445.dtsi" + +/ { + model = "Broadcom STB (bcm7445), SVMB reference board"; + compatible = "brcm,bcm7445", "brcm,brcmstb"; + + memory { + device_type = "memory"; + reg = <0x00 0x00000000 0x00 0x40000000>, + <0x00 0x40000000 0x00 0x40000000>, + <0x00 0x80000000 0x00 0x40000000>; + }; +}; diff --git a/arch/arm/boot/dts/bcm7445.dtsi b/arch/arm/boot/dts/bcm7445.dtsi new file mode 100644 index 000000000000..0ca0f4e523d0 --- /dev/null +++ b/arch/arm/boot/dts/bcm7445.dtsi @@ -0,0 +1,111 @@ +#include + +#include "skeleton.dtsi" + +/ { + #address-cells = <2>; + #size-cells = <2>; + model = "Broadcom STB (bcm7445)"; + compatible = "brcm,bcm7445", "brcm,brcmstb"; + interrupt-parent = <&gic>; + + chosen { + bootargs = "console=ttyS0,115200 earlyprintk"; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + compatible = "brcm,brahma-b15"; + device_type = "cpu"; + enable-method = "brcm,brahma-b15"; + reg = <0>; + }; + + cpu@1 { + compatible = "brcm,brahma-b15"; + device_type = "cpu"; + enable-method = "brcm,brahma-b15"; + reg = <1>; + }; + + cpu@2 { + compatible = "brcm,brahma-b15"; + device_type = "cpu"; + enable-method = "brcm,brahma-b15"; + reg = <2>; + }; + + cpu@3 { + compatible = "brcm,brahma-b15"; + device_type = "cpu"; + enable-method = "brcm,brahma-b15"; + reg = <3>; + }; + }; + + gic: interrupt-controller@ffd00000 { + compatible = "brcm,brahma-b15-gic", "arm,cortex-a15-gic"; + reg = <0x00 0xffd01000 0x00 0x1000>, + <0x00 0xffd02000 0x00 0x2000>, + <0x00 0xffd04000 0x00 0x2000>, + <0x00 0xffd06000 0x00 0x2000>; + interrupt-controller; + #interrupt-cells = <3>; + }; + + timer { + compatible = "arm,armv7-timer"; + interrupts = , + , + , + ; + }; + + rdb { + #address-cells = <1>; + #size-cells = <1>; + compatible = "simple-bus"; + ranges = <0 0x00 0xf0000000 0x1000000>; + + serial@40ab00 { + compatible = "ns16550a"; + reg = <0x40ab00 0x20>; + reg-shift = <2>; + reg-io-width = <4>; + interrupts = ; + clock-frequency = <0x4d3f640>; + }; + + sun_top_ctrl: syscon@404000 { + compatible = "brcm,bcm7445-sun-top-ctrl", + "syscon"; + reg = <0x404000 0x51c>; + }; + + hif_cpubiuctrl: syscon@3e2400 { + compatible = "brcm,bcm7445-hif-cpubiuctrl", + "syscon"; + reg = <0x3e2400 0x5b4>; + }; + + hif_continuation: syscon@452000 { + compatible = "brcm,bcm7445-hif-continuation", + "syscon"; + reg = <0x452000 0x100>; + }; + }; + + smpboot { + compatible = "brcm,brcmstb-smpboot"; + syscon-cpu = <&hif_cpubiuctrl 0x88 0x178>; + syscon-cont = <&hif_continuation>; + }; + + reboot { + compatible = "brcm,brcmstb-reboot"; + syscon = <&sun_top_ctrl 0x304 0x308>; + }; +}; -- cgit v1.2.3