This patch adds glue code required for enabling the designware mac on stm32f7 devices.
Signed-off-by: Michael Kurz michi.kurz@gmail.com Acked-by: Joe Hershberger joe.hershberger@ni.com
---
Changes in v4: None Changes in v3: - Add Acked-by tag to 'add designware mac glue code for stm32'
Changes in v2: - Replaced bit shifts and masks with BIT() and GENMASK() macro - Moved STM32_SYSCFG_BASE into stm32.h header
arch/arm/include/asm/arch-stm32f7/stm32_periph.h | 1 + arch/arm/include/asm/arch-stm32f7/syscfg.h | 38 ++++++++++++++++ arch/arm/mach-stm32/stm32f7/clock.c | 5 +++ board/st/stm32f746-disco/stm32f746-disco.c | 56 ++++++++++++++++++++++++ configs/stm32f746-disco_defconfig | 15 ++++++- drivers/net/designware.c | 1 + include/configs/stm32f746-disco.h | 9 +++- 7 files changed, 122 insertions(+), 3 deletions(-) create mode 100644 arch/arm/include/asm/arch-stm32f7/syscfg.h
diff --git a/arch/arm/include/asm/arch-stm32f7/stm32_periph.h b/arch/arm/include/asm/arch-stm32f7/stm32_periph.h index 9b315a8..508b5f2 100644 --- a/arch/arm/include/asm/arch-stm32f7/stm32_periph.h +++ b/arch/arm/include/asm/arch-stm32f7/stm32_periph.h @@ -36,6 +36,7 @@ enum periph_clock { SYSCFG_CLOCK_CFG, TIMER2_CLOCK_CFG, FMC_CLOCK_CFG, + STMMAC_CLOCK_CFG, };
#endif /* __ASM_ARM_ARCH_PERIPH_H */ diff --git a/arch/arm/include/asm/arch-stm32f7/syscfg.h b/arch/arm/include/asm/arch-stm32f7/syscfg.h new file mode 100644 index 0000000..49e78f2 --- /dev/null +++ b/arch/arm/include/asm/arch-stm32f7/syscfg.h @@ -0,0 +1,38 @@ +/* + * (C) Copyright 2016 + * Michael Kurz, michi.kurz@gmail.com. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _STM32_SYSCFG_H +#define _STM32_SYSCFG_H + +struct stm32_syscfg_regs { + u32 memrmp; + u32 pmc; + u32 exticr1; + u32 exticr2; + u32 exticr3; + u32 exticr4; + u32 cmpcr; +}; + +/* + * SYSCFG registers base + */ +#define STM32_SYSCFG ((struct stm32_syscfg_regs *)STM32_SYSCFG_BASE) + +/* SYSCFG memory remap register */ +#define SYSCFG_MEMRMP_MEM_BOOT BIT(0) +#define SYSCFG_MEMRMP_SWP_FMC BIT(10) + +/* SYSCFG peripheral mode configuration register */ +#define SYSCFG_PMC_ADCXDC2 BIT(16) +#define SYSCFG_PMC_MII_RMII_SEL BIT(23) + +/* Compensation cell control register */ +#define SYSCFG_CMPCR_CMP_PD BIT(0) +#define SYSCFG_CMPCR_READY BIT(8) + +#endif diff --git a/arch/arm/mach-stm32/stm32f7/clock.c b/arch/arm/mach-stm32/stm32f7/clock.c index 4faf174..8b3d3fd 100644 --- a/arch/arm/mach-stm32/stm32f7/clock.c +++ b/arch/arm/mach-stm32/stm32f7/clock.c @@ -261,6 +261,11 @@ void clock_setup(int peripheral) case FMC_CLOCK_CFG: setbits_le32(&STM32_RCC->ahb3enr, RCC_AHB3ENR_FMC_EN); break; + case STMMAC_CLOCK_CFG: + setbits_le32(&STM32_RCC->ahb1enr, RCC_AHB1ENR_ETHMAC_EN); + setbits_le32(&STM32_RCC->ahb1enr, RCC_AHB1ENR_ETHMAC_RX_EN); + setbits_le32(&STM32_RCC->ahb1enr, RCC_AHB1ENR_ETHMAC_TX_EN); + break; default: break; } diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c index 929ccb4..6c16138 100644 --- a/board/st/stm32f746-disco/stm32f746-disco.c +++ b/board/st/stm32f746-disco/stm32f746-disco.c @@ -15,6 +15,7 @@ #include <dm/platform_data/serial_stm32x7.h> #include <asm/arch/stm32_periph.h> #include <asm/arch/stm32_defs.h> +#include <asm/arch/syscfg.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -276,6 +277,55 @@ U_BOOT_DEVICE(stm32x7_serials) = { .platdata = &serial_platdata, };
+#ifdef CONFIG_ETH_DESIGNWARE +const struct stm32_gpio_ctl gpio_ctl_eth = { + .mode = STM32_GPIO_MODE_AF, + .otype = STM32_GPIO_OTYPE_PP, + .speed = STM32_GPIO_SPEED_100M, + .pupd = STM32_GPIO_PUPD_NO, + .af = STM32_GPIO_AF11 +}; + +static const struct stm32_gpio_dsc eth_gpio[] = { + {STM32_GPIO_PORT_A, STM32_GPIO_PIN_1}, /* ETH_RMII_REF_CLK */ + {STM32_GPIO_PORT_A, STM32_GPIO_PIN_2}, /* ETH_MDIO */ + {STM32_GPIO_PORT_A, STM32_GPIO_PIN_7}, /* ETH_RMII_CRS_DV */ + + {STM32_GPIO_PORT_C, STM32_GPIO_PIN_1}, /* ETH_MDC */ + {STM32_GPIO_PORT_C, STM32_GPIO_PIN_4}, /* ETH_RMII_RXD0 */ + {STM32_GPIO_PORT_C, STM32_GPIO_PIN_5}, /* ETH_RMII_RXD1 */ + + {STM32_GPIO_PORT_G, STM32_GPIO_PIN_11}, /* ETH_RMII_TX_EN */ + {STM32_GPIO_PORT_G, STM32_GPIO_PIN_13}, /* ETH_RMII_TXD0 */ + {STM32_GPIO_PORT_G, STM32_GPIO_PIN_14}, /* ETH_RMII_TXD1 */ +}; + +static int stmmac_setup(void) +{ + int res = 0; + int i; + + clock_setup(SYSCFG_CLOCK_CFG); + + /* Set >RMII mode */ + STM32_SYSCFG->pmc |= SYSCFG_PMC_MII_RMII_SEL; + + clock_setup(GPIO_A_CLOCK_CFG); + clock_setup(GPIO_C_CLOCK_CFG); + clock_setup(GPIO_G_CLOCK_CFG); + + for (i = 0; i < ARRAY_SIZE(eth_gpio); i++) { + res = stm32_gpio_config(ð_gpio[i], &gpio_ctl_eth); + if (res) + return res; + } + + clock_setup(STMMAC_CLOCK_CFG); + + return 0; +} +#endif + u32 get_board_rev(void) { return 0; @@ -290,6 +340,12 @@ int board_early_init_f(void) if (res) return res;
+#ifdef CONFIG_ETH_DESIGNWARE + res = stmmac_setup(); + if (res) + return res; +#endif + return 0; }
diff --git a/configs/stm32f746-disco_defconfig b/configs/stm32f746-disco_defconfig index 424e750..6d6c29a 100644 --- a/configs/stm32f746-disco_defconfig +++ b/configs/stm32f746-disco_defconfig @@ -13,7 +13,20 @@ CONFIG_AUTOBOOT_KEYED=y CONFIG_AUTOBOOT_PROMPT="Hit SPACE in %d seconds to stop autoboot.\n" CONFIG_AUTOBOOT_STOP_STR=" " # CONFIG_CMD_IMLS is not set +# CONFIG_CMD_FPGA is not set # CONFIG_CMD_SETEXPR is not set +CONFIG_CMD_DHCP=y +CONFIG_CMD_MII=y +CONFIG_CMD_PING=y +CONFIG_CMD_SNTP=y +CONFIG_CMD_DNS=y +CONFIG_CMD_LINK_LOCAL=y CONFIG_CMD_TIMER=y -CONFIG_OF_LIBFDT=y +CONFIG_OF_CONTROL=y +CONFIG_NET_RANDOM_ETHADDR=y +CONFIG_NETCONSOLE=y +CONFIG_DM_ETH=y +CONFIG_ETH_DESIGNWARE=y +# CONFIG_SPL_SERIAL_PRESENT is not set +CONFIG_OF_LIBFDT_OVERLAY=y # CONFIG_EFI_LOADER is not set diff --git a/drivers/net/designware.c b/drivers/net/designware.c index f242fc6..e207bc6 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -763,6 +763,7 @@ static const struct udevice_id designware_eth_ids[] = { { .compatible = "allwinner,sun7i-a20-gmac" }, { .compatible = "altr,socfpga-stmmac" }, { .compatible = "amlogic,meson6-dwmac" }, + { .compatible = "st,stm32-dwmac" }, { } };
diff --git a/include/configs/stm32f746-disco.h b/include/configs/stm32f746-disco.h index 4391bff..4088064 100644 --- a/include/configs/stm32f746-disco.h +++ b/include/configs/stm32f746-disco.h @@ -42,6 +42,11 @@ #define CONFIG_STM32_FLASH #define CONFIG_STM32X7_SERIAL
+#define CONFIG_DESIGNWARE_ETH +#define CONFIG_DW_GMAC_DEFAULT_DMA_PBL (8) +#define CONFIG_DW_ALTDESCRIPTOR +#define CONFIG_MII + #define CONFIG_STM32_HSE_HZ 25000000 #define CONFIG_SYS_CLK_FREQ 200000000 /* 200 MHz */ #define CONFIG_SYS_HZ_CLOCK 1000000 /* Timer is clocked at 1MHz */ @@ -56,8 +61,8 @@ + sizeof(CONFIG_SYS_PROMPT) + 16)
#define CONFIG_SYS_MAXARGS 16 -#define CONFIG_SYS_MALLOC_LEN (16 * 1024) -#define CONFIG_STACKSIZE (64 << 10) +#define CONFIG_SYS_MALLOC_LEN (1 * 1024 * 1024) +#define CONFIG_STACKSIZE (256 * 1024)
#define CONFIG_BAUDRATE 115200 #define CONFIG_BOOTARGS \