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1.Since it would be dangerous to specify a newer SoC's compatible string as the fallback of an older SoC's compatible string, we add support for the "ingenic,jz4775-spi" compatible string in the driver. This will permit to support the JZ4775 by having: compatible = "ingenic,jz4775-spi"; Instead of doing: compatible = "ingenic,jz4775-spi", "ingenic,jz4780-spi"; 2.Add support for probing the spi-ingenic driver on the X1000 SoC from Ingenic. From the X1000 SoC onwards, the maximum frequency allowed by the SSI module of Ingenic SoCs has been changed from 54MHz to 50MHz. So "max_speed_hz" is introduced in "jz_soc_info" to set different maximum frequency values. 3.Add support for probing the spi-ingenic driver on the X2000 SoC from Ingenic. The X2000 SoC has only one native chip select line, so "max_native_cs" is introduced in "jz_soc_info" to set different maximum number of native chip select lines. 4.Because of the introduction of support for the X-series SoCs, the current driver is not only applicable to the JZ-series SoCs, so the description texts has been modified to avoid misunderstanding. Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> Reviewed-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/1650724725-93758-4-git-send-email-zhouyanjie@wanyeetech.com Signed-off-by: Mark Brown <broonie@kernel.org>
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 Restructured Text 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.