| # Atmel SAM Ethernet (GMAC) driver configuration options |
| |
| # Copyright (c) 2016 Piotr Mienkowski |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| menuconfig ETH_SAM_GMAC |
| bool "Atmel SAM Ethernet driver" |
| depends on SOC_FAMILY_SAM0 || SOC_FAMILY_SAM |
| select NOCACHE_MEMORY if ARCH_HAS_NOCACHE_MEMORY_SUPPORT |
| select MDIO |
| help |
| Enable Atmel SAM MCU Family Ethernet driver. |
| |
| if ETH_SAM_GMAC |
| |
| # Workaround for not being able to have commas in macro arguments |
| DT_ETH_SAM_GMAC_PATH := $(dt_nodelabel_path,gmac) |
| |
| # Just for readability, to keep the following lines shorter. |
| DT_ETH_SAM_GMAC_NQ := $(dt_node_int_prop_int,$(DT_ETH_SAM_GMAC_PATH),num-queues) |
| |
| config ETH_SAM_GMAC_QUEUES |
| int "Number of active hardware TX and RX queues" |
| default 1 |
| range 1 $(DT_ETH_SAM_GMAC_NQ) if SOC_SERIES_SAME70 || \ |
| SOC_SERIES_SAMV71 || \ |
| SOC_SERIES_SAM4E || \ |
| SOC_SERIES_SAME54 |
| help |
| Select the number of hardware queues used by the driver. Packets will be |
| routed to appropriate queues based on their priority. |
| |
| config ETH_SAM_GMAC_FORCE_QUEUE |
| bool "Force all traffic to be routed through a specific queue" |
| depends on ETH_SAM_GMAC_QUEUES > 1 |
| depends on NET_TC_RX_COUNT < 5 |
| help |
| This option is meant to be used only for debugging. Use it to force all |
| traffic to be routed through a specific hardware queue. With this enabled |
| it is easier to verify whether the chosen hardware queue actually works. |
| This works only if there are four or fewer RX traffic classes enabled, as |
| the SAM GMAC hardware supports screening up to four traffic classes. |
| |
| config ETH_SAM_GMAC_FORCED_QUEUE |
| int "Queue to force the packets to" |
| depends on ETH_SAM_GMAC_FORCE_QUEUE |
| default 0 |
| range 0 1 if ETH_SAM_GMAC_QUEUES = 2 |
| range 0 2 if ETH_SAM_GMAC_QUEUES = 3 |
| range 0 3 if ETH_SAM_GMAC_QUEUES = 4 |
| range 0 4 if ETH_SAM_GMAC_QUEUES = 5 |
| range 0 5 if ETH_SAM_GMAC_QUEUES = 6 |
| help |
| Which queue to force the routing to. This affects both the TX and RX queues |
| setup. |
| |
| config ETH_SAM_GMAC_BUF_RX_COUNT |
| int "Network RX buffers preallocated by the SAM ETH driver" |
| default 12 |
| help |
| Number of network buffers that will be permanently allocated by the |
| Ethernet driver. These buffers are used in receive path. They are |
| preallocated by the driver and made available to the GMAC module to be |
| filled in with incoming data. Their number has to be large enough to fit |
| at least one complete Ethernet frame. SAM ETH driver will always allocate |
| that amount of buffers for itself thus reducing the NET_BUF_RX_COUNT |
| which is a total amount of RX data buffers used by the whole networking |
| stack. One has to ensure that NET_PKT_RX_COUNT is large enough to |
| fit at least two Ethernet frames: one being received by the GMAC module |
| and the other being processed by the higher layer networking stack. |
| |
| config ETH_SAM_GMAC_MAC_I2C_EEPROM |
| bool "Read from an I2C EEPROM" |
| help |
| Read MAC address from an I2C EEPROM. |
| |
| if ETH_SAM_GMAC_MAC_I2C_EEPROM |
| |
| config ETH_SAM_GMAC_MAC_I2C_INT_ADDRESS |
| hex "I2C EEPROM internal address" |
| range 0 0xffffffff |
| help |
| Internal address of the EEPROM chip where the MAC address is stored. |
| Chips with 1 to 4 byte internal address size are supported. Address |
| size has to be configured in a separate Kconfig option. |
| |
| config ETH_SAM_GMAC_MAC_I2C_INT_ADDRESS_SIZE |
| int "I2C EEPROM internal address size" |
| default 1 |
| range 1 4 |
| help |
| Size (in bytes) of the internal EEPROM address. |
| |
| endif # ETH_SAM_GMAC_MAC_I2C_EEPROM |
| |
| config PTP_CLOCK_SAM_GMAC |
| bool "SAM GMAC PTP clock driver support" |
| default y |
| depends on PTP_CLOCK |
| help |
| Enable SAM GMAC PTP Clock support. |
| |
| endif # ETH_SAM_GMAC |
