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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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4a875cf154
Theobroma Systems Mule is an MCU that emulates a set of I2C devices, among which devices that are reachable through an I2C-mux. The devices on the mux can be selected by writing the appropriate device number to an I2C config register. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Farouk Bouabid <farouk.bouabid@cherry.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
70 lines
2.0 KiB
YAML
70 lines
2.0 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/i2c/tsd,mule-i2c-mux.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Theobroma Systems Mule I2C multiplexer
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maintainers:
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- Farouk Bouabid <farouk.bouabid@cherry.de>
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- Quentin Schulz <quentin.schulz@cherry.de>
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description: |
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Theobroma Systems Mule is an MCU that emulates a set of I2C devices, among
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which devices that are reachable through an I2C-mux. The devices on the mux
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can be selected by writing the appropriate device number to an I2C config
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register.
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+--------------------------------------------------+
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| Mule |
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0x18| +---------------+ |
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-------->|Config register|----+ |
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| +---------------+ | |
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| V_ |
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| | \ +--------+ |
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| | \-------->| dev #0 | |
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| | | +--------+ |
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0x6f| | M |-------->| dev #1 | |
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---------------------------->| U | +--------+ |
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| | X |-------->| dev #2 | |
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| | | +--------+ |
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| | /-------->| dev #3 | |
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| |__/ +--------+ |
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+--------------------------------------------------+
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allOf:
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- $ref: /schemas/i2c/i2c-mux.yaml#
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properties:
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compatible:
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const: tsd,mule-i2c-mux
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required:
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- compatible
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unevaluatedProperties: false
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examples:
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- |
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i2c-mux {
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compatible = "tsd,mule-i2c-mux";
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#address-cells = <1>;
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#size-cells = <0>;
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i2c@0 {
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reg = <0x0>;
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#address-cells = <1>;
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#size-cells = <0>;
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rtc@6f {
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compatible = "isil,isl1208";
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reg = <0x6f>;
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};
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};
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};
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...
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