Update the Kconfig for the npcx eSPI driver so it's automatically
enabled if the devicetree node is enabled.
Signed-off-by: Keith Short <keithshort@google.com>
Replace Nuvoton NPCX series definitions with new Kconfig definitions in
the npcx drivers. The benefit of this approach is that we won't touch
the npcx driver sources again during introducing a new npcx series next
time.
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
If the host sends Port80 postcodes frequently while EC is busy handling
other tasks, the Port80 FIFO (16-byte depth) might overflow easily,
especially when the host sends the postcode with the 4-byte format.
This change defers the handling and sending (to the upper layer)
postcodes to the system workqueue thread. It can reduce a lot of
(but not all) the overflow case. Also in practice, we usually care
about the latest postcodes. The older codes are not significant to the
developer. This commit also lowers the printing of the overflow warning
to LOG_DEBUG.
Signed-off-by: Jun Lin <CHLin56@nuvoton.com>
eSPI PUT_IOWR_SHORT protocol can send 1/2/4 bytes of data in a single
transaction. This allows the host to send max 32-bits Port80 code
at one time. This CL sets bits OFS0_SEL~OFS3_SEL in the DPAR1 register
to let the EC hardware put the full Port80 code to DP80BUF FIFO.
It also groups the N-byte code into a single 32-bits variable when
necessary by analyzing the offset field in the DP80BUF register.
Signed-off-by: Jun Lin <CHLin56@nuvoton.com>
Enabling an eSPI channel (r.g. Peripheral Channel, Virtual Wire Channel,
etc.) during an eSPI transaction might (with low probability) cause the
eSPI_SIF module to transition to a wrong state and therefore response
with FATAL_ERROR on an incoming transaction.
This CL workarounds this issue by clearing the bit 4 of NPCX eSPI
specific register#2.
Signed-off-by: Jun Lin <CHLin56@nuvoton.com>
This CL add a new notification event, ESPI_PERIPHERAL_EC_HOST_CMD, and
two response opcodes, ECUSTOM_HOST_CMD_GET_PARAM_MEMORY and
ECUSTOM_HOST_CMD_SEND_RESULT, to connect with host command sub-system
between host and ec.
It also introduced three configurations to increase the flexibility of
ec host command settings:
1. ESPI_PERIPHERAL_HOST_CMD_DATA_PORT_NUM:
Host I/O peripheral port number for ec host command data. The default
value is 0x0200.
2. ESPI_PERIPHERAL_HOST_CMD_PARAM_PORT_NUM:
Host I/O peripheral port number for ec host command parameters. The
default value is 0x0800.
3. ESPI_NPCX_PERIPHERAL_HOST_CMD_PARAM_SIZE:
Host I/O peripheral port size for ec host command in npcx series. The
valid value in npcx ec series for this option is
8/16/32/64/128/256/512/1024/2048/4096 bytes. The default value is 256
bytes.
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
This CL introduces two kinds of op codes for espi_api_lpc_read_request
and espi_api_lpc_write_request Zephyr espi api functions.
One is for supporting ACPI and shared memory region to access ACPI data.
The other is customized for certain platforms such as Chromebook and so
on.
This CL also introduced the following configurations to add the
flexibility of these settings.
1. ESPI_PERIPHERAL_ACPI_SHM_REGION_PORT_NUM:
Host I/O peripheral port number for shared memory region. The default
value is default 0x0900
2. ESPI_NPCX_PERIPHERAL_ACPI_SHD_MEM_SIZE:
Host I/O peripheral port size for shared memory in npcx series.
Please notice the valid value in npcx ec series for this option is
8/16/32/64/128/256/512/1024/2048/4096 bytes. The default value is 256
bytes.
This CL also turn off hardware-wire feature which generates VW events
that connected to hardware signals such as SMI and SCI. We will set
VW output events directly via espi_api_send_vwire() api function.
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
In order to prevent user turns on the pin-mux of devices has io-pads
unexpectedly, this CL added a new device definition for host uart
device. The pin-mux of host uart interface is enabled only if we set its
status as "okay" in dts file of board folder.
The following npcx7 drivers will meet:
1. Default status property of npcx devices with io-pads such as espi,
pwm, uart, host uart and so on should be "disabled".
2. Switch pin-mux by changing status property to "okay" in dts file of
board folder.
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>
