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authorRafał Miłecki <rafal@milecki.pl>2021-08-19 18:25:52 +0300
committerLee Jones <lee.jones@linaro.org>2021-11-05 17:38:51 +0300
commit3747a64179bff75fca38837516b2e91b7de8a36c (patch)
tree08f63ab7ea22bd03308971aa6122783a24cc2003 /Documentation/devicetree/bindings/mfd/brcm,misc.yaml
parent9ada96900ad7d7b4854d4caea8499296ede2ed49 (diff)
downloadlinux-3747a64179bff75fca38837516b2e91b7de8a36c.tar.xz
dt-bindings: mfd: Add Broadcom's MISC block
Broadcom's MISC is an MFD hardware block used on some of their SoCs like bcm63xx and bcm4908. At this point only PCIe reset is fully understood and documented. More functions may be added later. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/brcm,misc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom's MISC block
+
+maintainers:
+ - Rafał Miłecki <rafal@milecki.pl>
+
+description: |
+ Broadcom's MISC is a hardware block used on some SoCs (e.g. bcm63xx and
+ bcm4908). It's used to implement some simple functions like a watchdog, PCIe
+ reset, UniMAC control and more.
+
+properties:
+ compatible:
+ items:
+ - const: brcm,misc
+ - const: simple-mfd
+
+ reg:
+ description: MISC block registers
+
+ ranges: true
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+patternProperties:
+ '^reset-controller@[a-f0-9]+$':
+ $ref: ../reset/brcm,bcm4908-misc-pcie-reset.yaml
+
+additionalProperties: false
+
+required:
+ - reg
+ - '#address-cells'
+ - '#size-cells'
+
+examples:
+ - |
+ misc@ff802600 {
+ compatible = "brcm,misc", "simple-mfd";
+ reg = <0xff802600 0xe4>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x0 0xe4>;
+
+ reset-controller@44 {
+ compatible = "brcm,bcm4908-misc-pcie-reset";
+ reg = <0x44 0x4>;
+ #reset-cells = <1>;
+ };
+ };