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Return the raw JEDEC ID bytes as returned by the RDID command, even for variations that have the bytes in reverse order. This way we can avoid ambiguity if the manufacturer ever releases a new chip that returns them according to standard. Signed-off-by: Patrick Wicki <patrick.wicki@siemens.com> Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Link: https://patch.msgid.link/20260120130603.1066559-2-patrick@subset.ch Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
31 lines
1.0 KiB
Plaintext
31 lines
1.0 KiB
Plaintext
What: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/fram
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Date: June 2021
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KernelVersion: 5.14
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Contact: Jiri Prchal <jiri.prchal@aksignal.cz>
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Description:
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Contains the FRAM binary data. Same as EEPROM, just another file
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name to indicate that it employs ferroelectric process.
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It performs write operations at bus speed - no write delays.
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What: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/sernum
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Date: May 2021
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KernelVersion: 5.14
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Contact: Jiri Prchal <jiri.prchal@aksignal.cz>
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Description:
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Contains the serial number of the Cypress FRAM (FM25VN) if it is
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present. It will be displayed as a 8 byte hex string, as read
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from the device.
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This is a read-only attribute.
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What: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/jedec_id
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Date: January 2026
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KernelVersion: 6.19
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Contact: Patrick Wicki <patrick.wicki@siemens.com>
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Description:
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Contains the raw JEDEC ID bytes returned by the RDID (0x9f) command. The
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bytes are exposed as a hex string in big-endian order as read from the
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device.
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This is a read-only attribute.
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