Ken Van Hoeylandt
52 lines
1.5 KiB
YAML
52 lines
1.5 KiB
YAML
description: ESP32 SPI Controller
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include: ["spi-controller.yaml"]
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compatible: "espressif,esp32-spi"
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properties:
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host:
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type: int
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required: true
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description: |
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The SPI host (controller) to use.
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Defined by spi_host_device_t (e.g. SPI2_HOST, SPI3_HOST).
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pin-sclk:
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type: phandles
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default: GPIO_PIN_SPEC_NONE
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pin-mosi:
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type: phandles
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default: GPIO_PIN_SPEC_NONE
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description: MOSI (Data 0) pin
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pin-miso:
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type: phandles
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default: GPIO_PIN_SPEC_NONE
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description: MISO (Data 1) pin
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pin-wp:
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type: phandles
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default: GPIO_PIN_SPEC_NONE
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description: WP (Data 2) pin
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pin-hd:
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type: phandles
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default: GPIO_PIN_SPEC_NONE
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description: HD (Data 3) pin
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max-transfer-size:
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type: int
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default: 0
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description: |
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Data transfer size limit in bytes.
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0 means the platform decides the limit.
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cs-gpios:
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type: phandle-array
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element-type: "struct GpioPinSpec"
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default: "{ }"
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description: Null-terminated array of chip select GPIO pin specs for peripherals on this bus
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miso-pull-up:
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type: boolean
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default: false
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description: >
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Enables a weak internal pull-up on MISO, which floats between transactions/while another
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device on the bus is selected. Helps some SPI peripherals (a garbled/invalid response on
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CMD8/if_cond has been observed for SD-over-SPI on some boards) but has been observed to
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break others (prevents the SD card from responding to CMD0 at all) - opt in per board.
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