Microchip MEC172x has a modified eSPI SAF hardware implementation.
Hardware changes include multiple clock dividers for each SPI
flash device and data transfer using QMSPI local DMA.
espi reset interrupt is made a higer priority in MEC172x devicetree
because espi reset event resets all espi hardware and we don't
to want to service any other espi interrupt blocks when espi reset
occurs.
Signed-off-by: Jay Vasanth <jay.vasanth@microchip.com>
MEC172x eSPI driver, eSPI pin programming, interrupt updates related
to eSPI and other updates for MEC172x eSPI driver.
Signed-off-by: Jay Vasanth <jay.vasanth@microchip.com>
Add ESPI SAF features to the Microchip eSPI driver as
a separate file. ESPI SAF depends upon the core eSPI
driver adding the ability to attach the system SPI
flash to the EC eSPI endpoint instead of the host
eSPI controller.
Signed-off-by: Scott Worley <scott.worley@microchip.com>
Add an emulation controller which routes eSPI traffic to attached
emulators depending on the selected chip(mostly host).
This allows drivers for eSPI peripherals to be tested on systems
that don't have that peripheral attached, with the emulator handling
the eSPI traffic.
Signed-off-by: Dawid Niedzwiecki <dn@semihalf.com>
This CL contains the drivers of NPCX Host Sub-Modules that serve as an
interface between the Host and Core domains. For most of them, the Host
can configure these modules via eSPI(Peripheral Channel)/LPC by
accessing 'Configuration and Control register Set' which IO base address
is 0x4E as default. And the interrupts in core domain help handling any
events from host side.
In this commit, we introduced six host sub-modules. It includes:
1. Keyboard and Mouse Controller (KBC) interface.
2. Power Management (PM) channels.
3. Shared Memory mechanism (SHM).
4. Core Access to Host Modules (C2H).
5. Mobile System Wake-Up functions (MSWC).
6. Serial Port (Legacy UART)
The tasks in application layer such as 8042, ACPI and host command can
cooperation with this driver by connecting api or callback functions.
Signed-off-by: Mulin Chao <MLChao@nuvoton.com>
In npcx7 series, all of them support the Intel Enhanced Serial
Peripheral Interface (eSPI) Revision 1.0. This specification provides a
path for migrating host sub-devices via LPC to a lower pin count, higher
bandwidth bus. In addition to Host communication via the peripheral
channel, it provides virtual wires support, out-of-band communication,
and device mastering option over the Chipset SPI flash.
Becisdes introducing eSPI device in npcx7, this CL also includes:
1. Add eSPI device tree declarations.
2. Add npcx7-espi-vws-map.dtsi to present the relationship between eSPI
Virtual-Wire signals, eSPI registers, and wake-up input sources.
3. Zephyr eSPI api implementation.
4, Add OOB (Out of Band tunneled SMBus) support.
5. Add configuration files for eSPI test suites.
Signed-off-by: Mulin Chao <MLChao@nuvoton.com>
Add verification handlers for some syscalls that are just missing
that. Though there are syscalls still missing that but they need to be
fixed before adding verification handlers.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Add eSPI Microchip XEC driver
Include support for peripheral & virtual wires (channel 0-1)
OOB and flash support can be added in the future
Fix compilation error in pinmux driver
Signed-off-by: Jose Alberto Meza <jose.a.meza.arellano@intel.com>
Jay Vasanth