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e0cec36319
Compatible string "fsl,imx7d-i2c" is not exited at i2c-imx driver compatible string table, at the result, "fsl,imx21-i2c" will be matched, but it will cause erratum ERR007805 not be applied in fact. So Add "fsl,imx7d-i2c" compatible string in i2c-imx driver to apply the erratum ERR007805(https://www.nxp.com/docs/en/errata/IMX7DS_3N09P.pdf). " ERR007805 I2C: When the I2C clock speed is configured for 400 kHz, the SCL low period violates the I2C spec of 1.3 uS min Description: When the I2C module is programmed to operate at the maximum clock speed of 400 kHz (as defined by the I2C spec), the SCL clock low period violates the I2C spec of 1.3 uS min. The user must reduce the clock speed to obtain the SCL low time to meet the 1.3us I2C minimum required. This behavior means the SoC is not compliant to the I2C spec at 400kHz. Workaround: To meet the clock low period requirement in fast speed mode, SCL must be configured to 384KHz or less. " "fsl,imx7d-i2c" already is documented in binding doc. This erratum fix has been included in imx6_i2c_hwdata and it is the same in all I.MX6/7/8, so just reuse it. Fixes: |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.