| Neil Armstrong | 6915b10 | 2017-11-27 10:16:16 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 BayLibre, SAS |
| 3 | * Author: Neil Armstrong <narmstrong@baylibre.com> |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| 8 | #include <common.h> |
| 9 | #include <dm.h> |
| 10 | #include <asm/io.h> |
| 11 | #include <asm/arch/gxbb.h> |
| 12 | #include <asm/arch/eth.h> |
| 13 | #include <phy.h> |
| 14 | |
| 15 | /* Configure the Ethernet MAC with the requested interface mode |
| 16 | * with some optional flags. |
| 17 | */ |
| 18 | void meson_gx_eth_init(phy_interface_t mode, unsigned int flags) |
| 19 | { |
| 20 | switch (mode) { |
| 21 | case PHY_INTERFACE_MODE_RGMII: |
| 22 | case PHY_INTERFACE_MODE_RGMII_ID: |
| 23 | case PHY_INTERFACE_MODE_RGMII_RXID: |
| 24 | case PHY_INTERFACE_MODE_RGMII_TXID: |
| 25 | /* Set RGMII mode */ |
| 26 | setbits_le32(GXBB_ETH_REG_0, GXBB_ETH_REG_0_PHY_INTF | |
| 27 | GXBB_ETH_REG_0_TX_PHASE(1) | |
| 28 | GXBB_ETH_REG_0_TX_RATIO(4) | |
| 29 | GXBB_ETH_REG_0_PHY_CLK_EN | |
| 30 | GXBB_ETH_REG_0_CLK_EN); |
| 31 | break; |
| 32 | |
| 33 | case PHY_INTERFACE_MODE_RMII: |
| 34 | /* Set RMII mode */ |
| 35 | out_le32(GXBB_ETH_REG_0, GXBB_ETH_REG_0_INVERT_RMII_CLK | |
| 36 | GXBB_ETH_REG_0_CLK_EN); |
| 37 | |
| 38 | /* Use GXL RMII Internal PHY */ |
| 39 | if (IS_ENABLED(CONFIG_MESON_GXL) && |
| 40 | (flags & MESON_GXL_USE_INTERNAL_RMII_PHY)) { |
| 41 | writel(GXBB_ETH_REG_2, 0x10110181); |
| 42 | writel(GXBB_ETH_REG_3, 0xe40908ff); |
| 43 | } |
| 44 | |
| 45 | break; |
| 46 | |
| 47 | default: |
| 48 | printf("Invalid Ethernet interface mode\n"); |
| 49 | return; |
| 50 | } |
| 51 | |
| 52 | /* Enable power and clock gate */ |
| 53 | setbits_le32(GXBB_GCLK_MPEG_1, GXBB_GCLK_MPEG_1_ETH); |
| 54 | clrbits_le32(GXBB_MEM_PD_REG_0, GXBB_MEM_PD_REG_0_ETH_MASK); |
| 55 | } |