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These tables are used on voltage vswing sequence initialization on Icelake. The swing_sel on the spec's table is defined in a 4 bits binary like 1010. However the register bits are split in upper 1 bit swing_sel and lower 3 bits swing sel. In this table here we store this value as a single value in hex like it is mentioned in the Bspec and split it to the upper and lower bit values only while programming the registers. For instance: b1010 is written as 0xA and then while writing to the register, the upper 1 bit is obtained by (0xA & 0x8) and shifting by appropriate bits while lower 3 bits are obtained by (0xA & 0x7) and shifting by appropriate bits. Some of the columns need to be updated after the spec is updated. v5 (from Paulo): * Checkpatch fixes. v4 (from Paulo): * Fix minor typo * Coding style conformance v3: * Get rid of HDMI/DVI tables, same as DP (Paulo) * Use combo_phy in ddi buf trans table defs (Paulo) v2: * Added DW4_scaling_hex column to the translation tables (Rodrigo) Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180323172419.24911-3-paulo.r.zanoni@intel.com
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.