Merge pull request #15572 from dylad/pr/cpu/sam0/ethernet

cpu/sam0: add initial ethernet support
RIOT-OS · Dec 14, 2020 · 5f7a7bc · 5f7a7bc
2 parents cc55d4c + c934d5d
commit 5f7a7bc
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Showing 16 changed files with 678 additions and 1 deletion.
diff --git a/boards/same54-xpro/Makefile.dep b/boards/same54-xpro/Makefile.dep
@@ -10,3 +10,8 @@ ifneq (,$(filter mtd,$(USEMODULE)))
   FEATURES_REQUIRED += periph_spi_on_qspi
   USEMODULE += mtd_spi_nor
 endif
+
+# enables sam0_eth as default network device
+ifneq (,$(filter netdev_default,$(USEMODULE)))
+  USEMODULE += sam0_eth
+endif
diff --git a/boards/same54-xpro/Makefile.features b/boards/same54-xpro/Makefile.features
@@ -3,6 +3,7 @@ CPU_MODEL = same54p20a
 
 # Put defined MCU peripherals here (in alphabetical order)
 FEATURES_PROVIDED += periph_dac
+FEATURES_PROVIDED += periph_eth
 FEATURES_PROVIDED += periph_i2c
 FEATURES_PROVIDED += periph_rtc
 FEATURES_PROVIDED += periph_rtt

diff --git a/boards/same54-xpro/include/periph_conf.h b/boards/same54-xpro/include/periph_conf.h
@@ -361,6 +361,28 @@ static const adc_conf_chan_t adc_channels[] = {
 #define DAC_VREF            DAC_CTRLB_REFSEL_VREFPU
 /** @} */
 
+/**
+ * @name Ethernet peripheral configuration
+ * @{
+ */
+static const sam0_common_gmac_config_t sam_gmac_config[] = {
+    {
+        .dev = GMAC,
+        .refclk = GPIO_PIN(PA, 14),
+        .txen = GPIO_PIN(PA, 17),
+        .txd0 = GPIO_PIN(PA, 18),
+        .txd1 = GPIO_PIN(PA, 19),
+        .crsdv = GPIO_PIN(PC, 20),
+        .rxd0 = GPIO_PIN(PA, 13),
+        .rxd1 = GPIO_PIN(PA, 12),
+        .rxer = GPIO_PIN(PA, 15),
+        .mdc = GPIO_PIN(PC, 11),
+        .mdio = GPIO_PIN(PC, 12),
+        .rst_pin = GPIO_PIN(PC, 21),
+        .int_pin = GPIO_PIN(PD, 12),
+    }
+};
+
 #ifdef __cplusplus
 }
 #endif

diff --git a/cpu/sam0_common/Makefile b/cpu/sam0_common/Makefile
@@ -1,3 +1,7 @@
 DIRS = periph
 
+ifneq (, $(filter sam0_eth, $(USEMODULE)))
+    DIRS += sam0_eth
+endif
+
 include $(RIOTBASE)/Makefile.base
diff --git a/cpu/sam0_common/Makefile.dep b/cpu/sam0_common/Makefile.dep
@@ -12,4 +12,11 @@ USEMODULE += pm_layered
 # include sam0 common periph drivers
 USEMODULE += sam0_common_periph
 
+ifneq (,$(filter sam0_eth,$(USEMODULE)))
+  USEMODULE += netdev_eth
+  USEMODULE += netopt
+  USEMODULE += xtimer
+  USEMODULE += iolist
+  FEATURES_REQUIRED += periph_eth
+endif
 include $(RIOTCPU)/cortexm_common/Makefile.dep
diff --git a/cpu/sam0_common/Makefile.include b/cpu/sam0_common/Makefile.include
@@ -31,5 +31,9 @@ LINKER_SCRIPT ?= cortexm.ld
 
 INCLUDES += -I$(RIOTCPU)/sam0_common/include
 
+ifneq (,$(filter sam0_eth,$(USEMODULE)))
+  INCLUDES += -I$(RIOTCPU)/sam0_common/sam0_eth/
+endif
+
 PSEUDOMODULES += periph_rtc
 PSEUDOMODULES += periph_rtt
diff --git a/cpu/sam0_common/include/periph_cpu_common.h b/cpu/sam0_common/include/periph_cpu_common.h
@@ -141,6 +141,7 @@ typedef enum {
     GPIO_MUX_F = 0x5,       /**< select peripheral function F */
     GPIO_MUX_G = 0x6,       /**< select peripheral function G */
     GPIO_MUX_H = 0x7,       /**< select peripheral function H */
+    GPIO_MUX_L = 0xb,
 } gpio_mux_t;
 #endif
 
@@ -767,6 +768,48 @@ typedef struct {
     uint32_t muxpos;       /**< ADC channel pin multiplexer value */
 } adc_conf_chan_t;
 
+/**
+ * @name Ethernet peripheral parameters
+ * @{
+ */
+#ifndef ETH_RX_BUFFER_COUNT
+#define ETH_RX_BUFFER_COUNT (4)
+#endif
+
+#ifndef ETH_TX_BUFFER_COUNT
+#define ETH_TX_BUFFER_COUNT (4)
+#endif
+
+#ifndef ETH_RX_BUFFER_SIZE
+#define ETH_RX_BUFFER_SIZE (1536)
+#endif
+
+#ifndef ETH_TX_BUFFER_SIZE
+#define ETH_TX_BUFFER_SIZE (1536)
+#endif
+/** @} */
+
+/**
+ * @brief Ethernet parameters struct
+ */
+#if defined(GMAC_INST_NUM) || defined(DOXYGEN)
+typedef struct {
+    Gmac *dev;                /**< ptr to the device registers */
+    gpio_t refclk;            /**< REFCLK gpio */
+    gpio_t txen;              /**< TXEN gpio */
+    gpio_t txd0;              /**< TXD0 gpio */
+    gpio_t txd1;              /**< TXD1 gpio */
+    gpio_t crsdv;             /**< CRSDV gpio */
+    gpio_t rxd0;              /**< RXD0 gpio */
+    gpio_t rxd1;              /**< RXD1 gpio */
+    gpio_t rxer;              /**< RXER gpio */
+    gpio_t mdc;               /**< MII interface, clock gpio */
+    gpio_t mdio;              /**< MII interface, data gpio */
+    gpio_t rst_pin;           /**< PHY reset gpio */
+    gpio_t int_pin;           /**< PHY interrupt gpio */
+} sam0_common_gmac_config_t;
+#endif
+
 /**
  * @brief USB peripheral parameters
  */