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Diffstat (limited to 'Documentation/devicetree/bindings/soc/bcm')
3 files changed, 186 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml new file mode 100644 index 000000000..e28ef198a --- /dev/null +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml @@ -0,0 +1,86 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/bcm/brcm,bcm2835-pm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: BCM2835 PM (Power domains, watchdog) + +description: | + The PM block controls power domains and some reset lines, and includes a + watchdog timer. + +maintainers: + - Nicolas Saenz Julienne <nsaenz@kernel.org> + +allOf: + - $ref: /schemas/watchdog/watchdog.yaml# + +properties: + compatible: + items: + - enum: + - brcm,bcm2835-pm + - brcm,bcm2711-pm + - const: brcm,bcm2835-pm-wdt + + reg: + minItems: 2 + maxItems: 3 + + reg-names: + minItems: 2 + items: + - const: pm + - const: asb + - const: rpivid_asb + + "#power-domain-cells": + const: 1 + + "#reset-cells": + const: 1 + + clocks: + minItems: 4 + maxItems: 4 + + clock-names: + items: + - const: v3d + - const: peri_image + - const: h264 + - const: isp + + system-power-controller: + type: boolean + + timeout-sec: true + +required: + - compatible + - reg + - "#power-domain-cells" + - "#reset-cells" + - clocks + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/bcm2835.h> + + watchdog@7e100000 { + compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt"; + #power-domain-cells = <1>; + #reset-cells = <1>; + reg = <0x7e100000 0x114>, + <0x7e00a000 0x24>; + reg-names = "pm", "asb"; + clocks = <&clocks BCM2835_CLOCK_V3D>, + <&clocks BCM2835_CLOCK_PERI_IMAGE>, + <&clocks BCM2835_CLOCK_H264>, + <&clocks BCM2835_CLOCK_ISP>; + clock-names = "v3d", "peri_image", "h264", "isp"; + system-power-controller; + }; diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml new file mode 100644 index 000000000..e04439b33 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/bcm/brcm,bcm2835-vchiq.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VCHIQ firmware services + +maintainers: + - Nicolas Saenz Julienne <nsaenz@kernel.org> + +description: + The VCHIQ communication channel can be provided by BCM283x and Capri SoCs, + to communicate with the VPU-side OS services. + +properties: + compatible: + oneOf: + - description: BCM2835 based boards + items: + - enum: + - brcm,bcm2835-vchiq + + - description: BCM2836/BCM2837 based boards + items: + - enum: + - brcm,bcm2836-vchiq + - const: brcm,bcm2835-vchiq + + reg: + description: Physical base address and length of the doorbell register pair + minItems: 1 + + interrupts: + description: Interrupt number of the doorbell interrupt + minItems: 1 + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + mailbox@7e00b840 { + compatible = "brcm,bcm2835-vchiq"; + reg = <0x7e00b840 0xf>; + interrupts = <0 2>; + }; + +... diff --git a/Documentation/devicetree/bindings/soc/bcm/raspberrypi,bcm2835-power.txt b/Documentation/devicetree/bindings/soc/bcm/raspberrypi,bcm2835-power.txt new file mode 100644 index 000000000..30942cf79 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/bcm/raspberrypi,bcm2835-power.txt @@ -0,0 +1,47 @@ +Raspberry Pi power domain driver + +Required properties: + +- compatible: Should be "raspberrypi,bcm2835-power". +- firmware: Reference to the RPi firmware device node. +- #power-domain-cells: Should be <1>, we providing multiple power domains. + +The valid defines for power domain are: + + RPI_POWER_DOMAIN_I2C0 + RPI_POWER_DOMAIN_I2C1 + RPI_POWER_DOMAIN_I2C2 + RPI_POWER_DOMAIN_VIDEO_SCALER + RPI_POWER_DOMAIN_VPU1 + RPI_POWER_DOMAIN_HDMI + RPI_POWER_DOMAIN_USB + RPI_POWER_DOMAIN_VEC + RPI_POWER_DOMAIN_JPEG + RPI_POWER_DOMAIN_H264 + RPI_POWER_DOMAIN_V3D + RPI_POWER_DOMAIN_ISP + RPI_POWER_DOMAIN_UNICAM0 + RPI_POWER_DOMAIN_UNICAM1 + RPI_POWER_DOMAIN_CCP2RX + RPI_POWER_DOMAIN_CSI2 + RPI_POWER_DOMAIN_CPI + RPI_POWER_DOMAIN_DSI0 + RPI_POWER_DOMAIN_DSI1 + RPI_POWER_DOMAIN_TRANSPOSER + RPI_POWER_DOMAIN_CCP2TX + RPI_POWER_DOMAIN_CDP + RPI_POWER_DOMAIN_ARM + +Example: + +power: power { + compatible = "raspberrypi,bcm2835-power"; + firmware = <&firmware>; + #power-domain-cells = <1>; +}; + +Example for using power domain: + +&usb { + power-domains = <&power RPI_POWER_DOMAIN_USB>; +}; |