Furquan Shaikh 70063ff565 soc/amd/common/block: Add support for configuring eSPI connection to slave ... This change adds a helper function espi_setup() which allows SoCs to configure connection to slave. Most of the configuration is dependent upon mainboard settings in espi_config done as part of the device tree. The general flow for setup involves the following steps: 1. Set initial configuration (lowest operating frequency and single mode). 2. Perform in-band reset and set initial configuration since the settings would be lost by the reset. 3. Read slave capabilities. 4. Set slave configuration based on mainboard settings. 5. Perform eSPI host controller configuration to match the slave configuration and set polarities for VW interrupts. 6. Perform VW channel setup and deassert PLTRST#. 7. Perform peripheral channel setup. 8. Perform OOB channel setup. 9. Perform flash channel setup. 10. Enable subtractive decoding if requested by mainboard. BUG=b:153675913 Signed-off-by: Furquan Shaikh <furquan@google.com> Change-Id: I872ec09cd92e9bb53f22e38d2773f3491355279e Reviewed-on: https://review.coreboot.org/c/coreboot/+/41272 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Raul Rangel <rrangel@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>		2020-05-13 08:41:20 +00:00
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common	soc/amd/common/block: Add support for configuring eSPI connection to slave	2020-05-13 08:41:20 +00:00
picasso	Remove new additions of "this file is part of" lines	2020-05-13 08:37:21 +00:00
stoneyridge	soc/amd/common/block/lpc: Split lpc_set_spibase() into two functions	2020-05-12 18:59:38 +00:00
Kconfig	soc/amd: Add picasso to Kconfig	2019-07-02 14:33:42 +00:00