Hello everyone,
i'm working on a custom SOC based on ST32MP135 and LAN8710 ethernet phy chip.
When the HAL_ETH_Init() code runs and sends the module reset by setting the ETH_DMAMR_SWR bit, the loop exits with the HAL_ETH_ERROR_TIMEOUT.
The current interface is set to SYSCFG_ETH1_RMII value and the clock source is set by the following code:
HAL_RCCEx_PeriphCLKConfig(&(RCC_PeriphCLKInitTypeDef){
.PeriphClockSelection = RCC_PERIPHCLK_ETH1,
.Eth1ClockSelection = RCC_ETH1CLKSOURCE_PLL4
});
The HAL_ETH_MspInit() function sets the GPIOs and enables the clocks:
/* Enable GPIOs clocks */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
/* Ethernet MSP init:
REF_CLK -------------> PA11
TXD0 --------------> PG13
TXD1 --------------> PG14
RXD0 --------------> PC4
RXD1 --------------> PC5
TX_EN --------------> PB11
CRS_DV --------------> PC1
MDC --------------> PG2
MDIO --------------> PA2
*/
/* Configure PA11 = ETH1_CLK */
GPIO_InitStructure.Pin = GPIO_PIN_11;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_MEDIUM;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure PA2 = ETH1_MDIO */
GPIO_InitStructure.Pin = GPIO_PIN_2;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure PB11 = ETH1_TX_EN */
GPIO_InitStructure.Pin = GPIO_PIN_11;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_MEDIUM;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure PC1 = ETH1_CRS_DV */
GPIO_InitStructure.Pin = GPIO_PIN_1;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Alternate = GPIO_AF10_ETH;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Configure PC4 = ETH1_RXD0 and PC5 = ETH1_RXD1 */
GPIO_InitStructure.Pin = GPIO_PIN_4 | GPIO_PIN_5;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Configure PG2 = ETH1_MDC, PG13 = ETH1_TXD0 and PG14 = ETH1_TXD1 */
GPIO_InitStructure.Pin = GPIO_PIN_2 | GPIO_PIN_13 | GPIO_PIN_14;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_MEDIUM;
GPIO_InitStructure.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOG, &GPIO_InitStructure);
/* Enable Ethernet clocks */
__HAL_RCC_ETH1CK_CLK_ENABLE();
__HAL_RCC_ETH1MAC_CLK_ENABLE();
__HAL_RCC_ETH1TX_CLK_ENABLE();
__HAL_RCC_ETH1RX_CLK_ENABLE();
/* Configure IRQ */
IRQ_SetPriority(ETH1_IRQn, 7);
IRQ_Enable(ETH1_IRQn);
Touching the pin 5 (CLKIN) of the PHY I see a 50MHz clock.
Any idea about the timeout?
Regards
