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Altera_Forum
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8 years ago

CPLD with Skylake CPU via eSPI interface

Hi, I own a project and there is a Altera CPLD attached to Skylake CPU via eSPI, Im wondering port a embedded Linux to access CPLD. Im sure there is a master CPLD driver build-in Linux kernel, s...
Altera_Forum's avatar
Altera_Forum
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8 years ago

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Hi,

Im sure there is a master CPLD driver build-in Linux kernel, should I write a customize eSPI slave driver for accessing this specific CPLD?

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Most likely, yes.

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I trace the source code of linux kernel, there is a C file - spi-altera.c, did it support all Altera product and using eSPI interface?

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That driver is for interfacing to the Altera SPI IP block (e.g. from a NIOS or ARM), which is not what you are doing.