This patchs adds glue logic to enable designware mac present on Action Semi based S700 SoC, Configures SoC specific bits.
It has been tested on Cubieboard7.
Signed-off-by: Amit Singh Tomar amittomer25@gmail.com --- Changes since v2: * Newly added patch, not there in v2/v1. --- arch/arm/include/asm/arch-owl/regs_s700.h | 6 +++ drivers/net/Kconfig | 7 ++++ drivers/net/Makefile | 1 + drivers/net/dwmac_s700.c | 66 +++++++++++++++++++++++++++++++ 4 files changed, 80 insertions(+) create mode 100644 drivers/net/dwmac_s700.c
diff --git a/arch/arm/include/asm/arch-owl/regs_s700.h b/arch/arm/include/asm/arch-owl/regs_s700.h index a0bd737..b4ed719 100644 --- a/arch/arm/include/asm/arch-owl/regs_s700.h +++ b/arch/arm/include/asm/arch-owl/regs_s700.h @@ -53,4 +53,10 @@ #define CMU_CVBSPLL (0x00B8) #define CMU_SSTSCLK (0x00C0)
+#define GPIO_MFP_PWM (0xE01B0000) +#define MFP_CTL0 (GPIO_MFP_PWM + 0x40) +#define MFP_CTL1 (GPIO_MFP_PWM + 0x44) +#define MFP_CTL2 (GPIO_MFP_PWM + 0x48) +#define MFP_CTL3 (GPIO_MFP_PWM + 0x4C) + #endif diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 01d087f..6a5ecf8 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -218,6 +218,13 @@ config ETH_DESIGNWARE_SOCFPGA Altera system manager to correctly interface with the PHY. This code handles those SoC specifics.
+config ETH_DESIGNWARE_S700 + bool "Actins S700 glue driver for Synopsys Designware Ethernet MAC" + depends on DM_ETH && ETH_DESIGNWARE + help + This provides glue layer to use Synopsys Designware Ethernet MAC + present on Actions S700 SoC. + config ETHOC bool "OpenCores 10/100 Mbps Ethernet MAC" help diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 3099183..b8e766b 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_CS8900) += cs8900.o obj-$(CONFIG_TULIP) += dc2114x.o obj-$(CONFIG_ETH_DESIGNWARE) += designware.o obj-$(CONFIG_ETH_DESIGNWARE_SOCFPGA) += dwmac_socfpga.o +obj-$(CONFIG_ETH_DESIGNWARE_S700) += dwmac_s700.o obj-$(CONFIG_DRIVER_DM9000) += dm9000x.o obj-$(CONFIG_DNET) += dnet.o obj-$(CONFIG_E1000) += e1000.o diff --git a/drivers/net/dwmac_s700.c b/drivers/net/dwmac_s700.c new file mode 100644 index 0000000..a5d544e --- /dev/null +++ b/drivers/net/dwmac_s700.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Amit Singh Tomar amittomer25@gmail.com + * + * Actions DWMAC specific glue layer + */ + +#include <common.h> +#include <asm/io.h> +#include <dm.h> +#include <clk.h> +#include <phy.h> +#include <regmap.h> +#include <reset.h> +#include <syscon.h> +#include "designware.h" +#include <asm/arch-owl/regs_s700.h> + +/* pin control for MAC */ +#define RMII_TXD01_MFP_CTL0 (0x0 << 16) +#define RMII_RXD01_MFP_CTL0 (0x0 << 8) +#define RMII_TXEN_TXER_MFP_CTL0 (0x0 << 13) +#define RMII_REF_CLK_MFP_CTL0 (0x0 << 6) +#define CLKO_25M_EN_MFP_CTL3 BIT(30) + +DECLARE_GLOBAL_DATA_PTR; + +static void dwmac_board_setup(void) +{ + clrbits_le32(MFP_CTL0, (RMII_TXD01_MFP_CTL0 | RMII_RXD01_MFP_CTL0 | + RMII_TXEN_TXER_MFP_CTL0 | RMII_REF_CLK_MFP_CTL0)); + + setbits_le32(MFP_CTL3, CLKO_25M_EN_MFP_CTL3); +} + +static int dwmac_s700_probe(struct udevice *dev) +{ + dwmac_board_setup(); + + /* This is undocumented, phy interface select register */ + writel(0x4, 0xe024c0a0); + + return designware_eth_probe(dev); +} + +static int dwmac_s700_ofdata_to_platdata(struct udevice *dev) +{ + return designware_eth_ofdata_to_platdata(dev); +} + +static const struct udevice_id dwmac_s700_ids[] = { + {.compatible = "actions,s700-ethernet"}, + { } +}; + +U_BOOT_DRIVER(dwmac_s700) = { + .name = "dwmac_s700", + .id = UCLASS_ETH, + .of_match = dwmac_s700_ids, + .ofdata_to_platdata = dwmac_s700_ofdata_to_platdata, + .probe = dwmac_s700_probe, + .ops = &designware_eth_ops, + .priv_auto_alloc_size = sizeof(struct dw_eth_dev), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +};