| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) ASPEED Technology Inc. |
| */ |
| #include <common.h> |
| #include <clk.h> |
| #include <dm.h> |
| #include <errno.h> |
| #include <ram.h> |
| #include <regmap.h> |
| #include <reset.h> |
| #include <asm/io.h> |
| #include <asm/arch/scu_ast2600.h> |
| #include <asm/arch/sdram_ast2600.h> |
| #include <asm/global_data.h> |
| #include <linux/err.h> |
| #include <linux/kernel.h> |
| #include <linux/bitfield.h> |
| #include <dt-bindings/clock/ast2600-clock.h> |
| |
| #define DDR_PHY_TBL_CHG_ADDR 0xaeeddeea |
| #define DDR_PHY_TBL_END 0xaeededed |
| |
| /** |
| * phyr030[18:16] - Ron PU (PHY side) |
| * phyr030[14:12] - Ron PD (PHY side) |
| * b'000 : disable |
| * b'001 : 240 ohm |
| * b'010 : 120 ohm |
| * b'011 : 80 ohm |
| * b'100 : 60 ohm |
| * b'101 : 48 ohm |
| * b'110 : 40 ohm |
| * b'111 : 34 ohm (default) |
| */ |
| #define PHY_RON ((0x7 << 16) | (0x7 << 12)) |
| |
| /** |
| * phyr030[10:8] - ODT configuration (PHY side) |
| * b'000 : ODT disabled |
| * b'001 : 240 ohm |
| * b'010 : 120 ohm |
| * b'011 : 80 ohm (default) |
| * b'100 : 60 ohm |
| * b'101 : 48 ohm |
| * b'110 : 40 ohm |
| * b'111 : 34 ohm |
| */ |
| #define PHY_ODT (0x3 << 8) |
| |
| /** |
| * MR1[2:1] output driver impedance |
| * b'00 : 34 ohm (default) |
| * b'01 : 48 ohm |
| */ |
| #define DRAM_RON (0x0 << 1) |
| |
| /** |
| * DRAM ODT - synchronous ODT mode |
| * RTT_WR: disable |
| * RTT_NOM = RTT_PARK |
| * |
| * MR1[10:8] RTT_NOM |
| * b'000 : RTT_NOM disable |
| * b'001 : 60 ohm |
| * b'010 : 120 ohm |
| * b'011 : 40 ohm |
| * b'100 : 240 ohm |
| * b'101 : 48 ohm (default) |
| * b'110 : 80 ohm |
| * b'111 : 34 ohm |
| * |
| * MR5[8:6] RTT_PARK |
| * b'000 : RTT_PARK disable |
| * b'001 : 60 ohm |
| * b'010 : 120 ohm |
| * b'011 : 40 ohm |
| * b'100 : 240 ohm |
| * b'101 : 48 ohm (default) |
| * b'110 : 80 ohm |
| * b'111 : 34 ohm |
| * |
| * MR2[11:9] RTT_WR |
| * b'000 : Dynamic ODT off (default) |
| * b'001 : 120 ohm |
| * b'010 : 240 ohm |
| * b'011 : Hi-Z |
| * b'100 : 80 ohm |
| */ |
| #define RTT_WR (0x0 << 9) |
| #define RTT_NOM (0x5 << 8) |
| #define RTT_PARK (0x5 << 6) |
| |
| /** |
| * MR6[6] VrefDQ training range |
| * b'0 : range 1 |
| * b'1 : range 2 (default) |
| */ |
| #define VREFDQ_RANGE_2 BIT(6) |
| |
| /** |
| * Latency setting: |
| * AL = PL = 0 (hardware fixed setting) |
| * -> WL = AL + CWL + PL = CWL |
| * -> RL = AL + CL + PL = CL |
| */ |
| #define CFG_WL 9 |
| #define CFG_RL 12 |
| #define T_RDDATA_EN ((CFG_RL - 2) << 8) |
| #define T_PHY_WRLAT (CFG_WL - 2) |
| |
| /* MR0 */ |
| #define MR0_CL_12 (BIT(4) | BIT(2)) |
| #define MR0_WR12_RTP6 BIT(9) |
| #define MR0_DLL_RESET BIT(8) |
| #define MR0_VAL (MR0_CL_12 | MR0_WR12_RTP6 | MR0_DLL_RESET) |
| |
| /* MR1 */ |
| #define MR1_VAL (0x0001 | RTT_NOM | DRAM_RON) |
| |
| /* MR2 */ |
| #define MR2_CWL_9 0 |
| #define MR2_VAL (0x0000 | RTT_WR | MR2_CWL_9) |
| |
| /* MR3 ~ MR6 */ |
| #define MR3_VAL 0x0000 |
| #define MR4_VAL 0x0000 |
| #define MR5_VAL (0x0400 | RTT_PARK) |
| #define MR6_VAL 0x0400 |
| |
| /** |
| * The offset value applied to the DDR PHY write data eye training result |
| * to fine-tune the write DQ/DQS alignment |
| */ |
| #define WR_DATA_EYE_OFFSET (0x10 << 8) |
| |
| #if defined(CONFIG_ASPEED_DDR4_800) |
| u32 ast2600_sdramphy_config[165] = { |
| 0x1e6e0100, // start address |
| 0x00000000, // phyr000 |
| 0x0c002062, // phyr004 |
| 0x1a7a0063, // phyr008 |
| 0x5a7a0063, // phyr00c |
| 0x1a7a0063, // phyr010 |
| 0x1a7a0063, // phyr014 |
| 0x20000000, // phyr018 |
| 0x20000000, // phyr01c |
| 0x20000000, // phyr020 |
| 0x20000000, // phyr024 |
| 0x00000008, // phyr028 |
| 0x00000000, // phyr02c |
| (PHY_RON | PHY_ODT), /* phyr030 */ |
| 0x00000000, // phyr034 |
| 0x00000000, // phyr038 |
| 0x20000000, // phyr03c |
| 0x50506000, // phyr040 |
| 0x50505050, // phyr044 |
| 0x00002f07, // phyr048 |
| 0x00003080, // phyr04c |
| 0x04000000, // phyr050 |
| ((MR3_VAL << 16) | MR2_VAL), /* phyr054 */ |
| ((MR0_VAL << 16) | MR1_VAL), /* phyr058 */ |
| ((MR5_VAL << 16) | MR4_VAL), /* phyr05c */ |
| ((0x0800 << 16) | MR6_VAL | VREFDQ_RANGE_2 | 0xe), /* phyr060 */ |
| 0x00000000, // phyr064 |
| 0x00180008, // phyr068 |
| 0x00e00400, // phyr06c |
| 0x00140206, // phyr070 |
| 0x1d4c0000, // phyr074 |
| (0x493e0100 | T_PHY_WRLAT), /* phyr078 */ |
| 0x08060404, // phyr07c |
| (0x90000000 | T_RDDATA_EN), /* phyr080 */ |
| 0x06420618, // phyr084 |
| 0x00001002, // phyr088 |
| 0x05701016, // phyr08c |
| 0x10000000, // phyr090 |
| 0xaeeddeea, // change address |
| 0x1e6e019c, // new address |
| 0x20202020, // phyr09c |
| 0x20202020, // phyr0a0 |
| 0x00002020, // phyr0a4 |
| 0x00002020, // phyr0a8 |
| 0x00000001, // phyr0ac |
| 0xaeeddeea, // change address |
| 0x1e6e01cc, // new address |
| 0x01010101, // phyr0cc |
| 0x01010101, // phyr0d0 |
| 0x80808080, // phyr0d4 |
| 0x80808080, // phyr0d8 |
| 0xaeeddeea, // change address |
| 0x1e6e0288, // new address |
| 0x80808080, // phyr188 |
| 0x80808080, // phyr18c |
| 0x80808080, // phyr190 |
| 0x80808080, // phyr194 |
| 0xaeeddeea, // change address |
| 0x1e6e02f8, // new address |
| 0x90909090, // phyr1f8 |
| 0x88888888, // phyr1fc |
| 0xaeeddeea, // change address |
| 0x1e6e0300, // new address |
| 0x00000000, // phyr200 |
| 0xaeeddeea, // change address |
| 0x1e6e0194, // new address |
| 0x80118260, // phyr094 |
| 0xaeeddeea, // change address |
| 0x1e6e019c, // new address |
| 0x20202020, // phyr09c |
| 0x20202020, // phyr0a0 |
| 0x00002020, // phyr0a4 |
| 0x00000000, /* phyr0a8 */ |
| 0x00000001, // phyr0ac |
| 0xaeeddeea, // change address |
| 0x1e6e0318, // new address |
| 0x09222719, // phyr218 |
| 0x00aa4403, // phyr21c |
| 0xaeeddeea, // change address |
| 0x1e6e0198, // new address |
| 0x08060000, // phyr098 |
| 0xaeeddeea, // change address |
| 0x1e6e01b0, // new address |
| 0x00000000, // phyr0b0 |
| 0x00000000, // phyr0b4 |
| 0x00000000, // phyr0b8 |
| 0x00000000, // phyr0bc |
| 0x00000000, // phyr0c0 |
| 0x00000000, // phyr0c4 |
| 0x000aff2c, // phyr0c8 |
| 0xaeeddeea, // change address |
| 0x1e6e01dc, // new address |
| 0x00080000, // phyr0dc |
| 0x00000000, // phyr0e0 |
| 0xaa55aa55, // phyr0e4 |
| 0x55aa55aa, // phyr0e8 |
| 0xaaaa5555, // phyr0ec |
| 0x5555aaaa, // phyr0f0 |
| 0xaa55aa55, // phyr0f4 |
| 0x55aa55aa, // phyr0f8 |
| 0xaaaa5555, // phyr0fc |
| 0x5555aaaa, // phyr100 |
| 0xaa55aa55, // phyr104 |
| 0x55aa55aa, // phyr108 |
| 0xaaaa5555, // phyr10c |
| 0x5555aaaa, // phyr110 |
| 0xaa55aa55, // phyr114 |
| 0x55aa55aa, // phyr118 |
| 0xaaaa5555, // phyr11c |
| 0x5555aaaa, // phyr120 |
| 0x20202020, // phyr124 |
| 0x20202020, // phyr128 |
| 0x20202020, // phyr12c |
| 0x20202020, // phyr130 |
| 0x20202020, // phyr134 |
| 0x20202020, // phyr138 |
| 0x20202020, // phyr13c |
| 0x20202020, // phyr140 |
| 0x20202020, // phyr144 |
| 0x20202020, // phyr148 |
| 0x20202020, // phyr14c |
| 0x20202020, // phyr150 |
| 0x20202020, // phyr154 |
| 0x20202020, // phyr158 |
| 0x20202020, // phyr15c |
| 0x20202020, // phyr160 |
| 0x20202020, // phyr164 |
| 0x20202020, // phyr168 |
| 0x20202020, // phyr16c |
| 0x20202020, // phyr170 |
| 0xaeeddeea, // change address |
| 0x1e6e0298, // new address |
| 0x20200000, /* phyr198 */ |
| 0x20202020, // phyr19c |
| 0x20202020, // phyr1a0 |
| 0x20202020, // phyr1a4 |
| 0x20202020, // phyr1a8 |
| 0x20202020, // phyr1ac |
| 0x20202020, // phyr1b0 |
| 0x20202020, // phyr1b4 |
| 0x20202020, // phyr1b8 |
| 0x20202020, // phyr1bc |
| 0x20202020, // phyr1c0 |
| 0x20202020, // phyr1c4 |
| 0x20202020, // phyr1c8 |
| 0x20202020, // phyr1cc |
| 0x20202020, // phyr1d0 |
| 0x20202020, // phyr1d4 |
| 0x20202020, // phyr1d8 |
| 0x20202020, // phyr1dc |
| 0x20202020, // phyr1e0 |
| 0x20202020, // phyr1e4 |
| 0x00002020, // phyr1e8 |
| 0xaeeddeea, // change address |
| 0x1e6e0304, // new address |
| (0x00000001 | WR_DATA_EYE_OFFSET), /* phyr204 */ |
| 0xaeeddeea, // change address |
| 0x1e6e027c, // new address |
| 0x4e400000, // phyr17c |
| 0x59595959, // phyr180 |
| 0x40404040, // phyr184 |
| 0xaeeddeea, // change address |
| 0x1e6e02f4, // new address |
| 0x00000059, // phyr1f4 |
| 0xaeededed, // end |
| }; |
| #else |
| u32 ast2600_sdramphy_config[165] = { |
| 0x1e6e0100, // start address |
| 0x00000000, // phyr000 |
| 0x0c002062, // phyr004 |
| 0x1a7a0063, // phyr008 |
| 0x5a7a0063, // phyr00c |
| 0x1a7a0063, // phyr010 |
| 0x1a7a0063, // phyr014 |
| 0x20000000, // phyr018 |
| 0x20000000, // phyr01c |
| 0x20000000, // phyr020 |
| 0x20000000, // phyr024 |
| 0x00000008, // phyr028 |
| 0x00000000, // phyr02c |
| (PHY_RON | PHY_ODT), /* phyr030 */ |
| 0x00000000, // phyr034 |
| 0x00000000, // phyr038 |
| 0x20000000, // phyr03c |
| 0x50506000, // phyr040 |
| 0x50505050, // phyr044 |
| 0x00002f07, // phyr048 |
| 0x00003080, // phyr04c |
| 0x04000000, // phyr050 |
| ((MR3_VAL << 16) | MR2_VAL), /* phyr054 */ |
| ((MR0_VAL << 16) | MR1_VAL), /* phyr058 */ |
| ((MR5_VAL << 16) | MR4_VAL), /* phyr05c */ |
| ((0x0800 << 16) | MR6_VAL | VREFDQ_RANGE_2 | 0xe), /* phyr060 */ |
| 0x00000000, // phyr064 |
| 0x00180008, // phyr068 |
| 0x00e00400, // phyr06c |
| 0x00140206, // phyr070 |
| 0x1d4c0000, // phyr074 |
| (0x493e0100 | T_PHY_WRLAT), /* phyr078 */ |
| 0x08060404, // phyr07c |
| (0x90000000 | T_RDDATA_EN), /* phyr080 */ |
| 0x06420c30, // phyr084 |
| 0x00001002, // phyr088 |
| 0x05701016, // phyr08c |
| 0x10000000, // phyr090 |
| 0xaeeddeea, // change address |
| 0x1e6e019c, // new address |
| 0x20202020, // phyr09c |
| 0x20202020, // phyr0a0 |
| 0x00002020, // phyr0a4 |
| 0x00002020, // phyr0a8 |
| 0x00000001, // phyr0ac |
| 0xaeeddeea, // change address |
| 0x1e6e01cc, // new address |
| 0x01010101, // phyr0cc |
| 0x01010101, // phyr0d0 |
| 0x80808080, // phyr0d4 |
| 0x80808080, // phyr0d8 |
| 0xaeeddeea, // change address |
| 0x1e6e0288, // new address |
| 0x80808080, // phyr188 |
| 0x80808080, // phyr18c |
| 0x80808080, // phyr190 |
| 0x80808080, // phyr194 |
| 0xaeeddeea, // change address |
| 0x1e6e02f8, // new address |
| 0x90909090, // phyr1f8 |
| 0x88888888, // phyr1fc |
| 0xaeeddeea, // change address |
| 0x1e6e0300, // new address |
| 0x00000000, // phyr200 |
| 0xaeeddeea, // change address |
| 0x1e6e0194, // new address |
| 0x801112e0, // phyr094 |
| 0xaeeddeea, // change address |
| 0x1e6e019c, // new address |
| 0x20202020, // phyr09c |
| 0x20202020, // phyr0a0 |
| 0x00002020, // phyr0a4 |
| 0x00000000, /* phyr0a8 */ |
| 0x00000001, // phyr0ac |
| 0xaeeddeea, // change address |
| 0x1e6e0318, // new address |
| 0x09222719, // phyr218 |
| 0x00aa4403, // phyr21c |
| 0xaeeddeea, // change address |
| 0x1e6e0198, // new address |
| 0x08060000, // phyr098 |
| 0xaeeddeea, // change address |
| 0x1e6e01b0, // new address |
| 0x00000000, // phyr0b0 |
| 0x00000000, // phyr0b4 |
| 0x00000000, // phyr0b8 |
| 0x00000000, // phyr0bc |
| 0x00000000, // phyr0c0 - ori |
| 0x00000000, // phyr0c4 |
| 0x000aff2c, // phyr0c8 |
| 0xaeeddeea, // change address |
| 0x1e6e01dc, // new address |
| 0x00080000, // phyr0dc |
| 0x00000000, // phyr0e0 |
| 0xaa55aa55, // phyr0e4 |
| 0x55aa55aa, // phyr0e8 |
| 0xaaaa5555, // phyr0ec |
| 0x5555aaaa, // phyr0f0 |
| 0xaa55aa55, // phyr0f4 |
| 0x55aa55aa, // phyr0f8 |
| 0xaaaa5555, // phyr0fc |
| 0x5555aaaa, // phyr100 |
| 0xaa55aa55, // phyr104 |
| 0x55aa55aa, // phyr108 |
| 0xaaaa5555, // phyr10c |
| 0x5555aaaa, // phyr110 |
| 0xaa55aa55, // phyr114 |
| 0x55aa55aa, // phyr118 |
| 0xaaaa5555, // phyr11c |
| 0x5555aaaa, // phyr120 |
| 0x20202020, // phyr124 |
| 0x20202020, // phyr128 |
| 0x20202020, // phyr12c |
| 0x20202020, // phyr130 |
| 0x20202020, // phyr134 |
| 0x20202020, // phyr138 |
| 0x20202020, // phyr13c |
| 0x20202020, // phyr140 |
| 0x20202020, // phyr144 |
| 0x20202020, // phyr148 |
| 0x20202020, // phyr14c |
| 0x20202020, // phyr150 |
| 0x20202020, // phyr154 |
| 0x20202020, // phyr158 |
| 0x20202020, // phyr15c |
| 0x20202020, // phyr160 |
| 0x20202020, // phyr164 |
| 0x20202020, // phyr168 |
| 0x20202020, // phyr16c |
| 0x20202020, // phyr170 |
| 0xaeeddeea, // change address |
| 0x1e6e0298, // new address |
| 0x20200000, /* phyr198 */ |
| 0x20202020, // phyr19c |
| 0x20202020, // phyr1a0 |
| 0x20202020, // phyr1a4 |
| 0x20202020, // phyr1a8 |
| 0x20202020, // phyr1ac |
| 0x20202020, // phyr1b0 |
| 0x20202020, // phyr1b4 |
| 0x20202020, // phyr1b8 |
| 0x20202020, // phyr1bc |
| 0x20202020, // phyr1c0 |
| 0x20202020, // phyr1c4 |
| 0x20202020, // phyr1c8 |
| 0x20202020, // phyr1cc |
| 0x20202020, // phyr1d0 |
| 0x20202020, // phyr1d4 |
| 0x20202020, // phyr1d8 |
| 0x20202020, // phyr1dc |
| 0x20202020, // phyr1e0 |
| 0x20202020, // phyr1e4 |
| 0x00002020, // phyr1e8 |
| 0xaeeddeea, // change address |
| 0x1e6e0304, // new address |
| (0x00000001 | WR_DATA_EYE_OFFSET), /* phyr204 */ |
| 0xaeeddeea, // change address |
| 0x1e6e027c, // new address |
| 0x4e400000, // phyr17c |
| 0x59595959, // phyr180 |
| 0x40404040, // phyr184 |
| 0xaeeddeea, // change address |
| 0x1e6e02f4, // new address |
| 0x00000059, // phyr1f4 |
| 0xaeededed, // end |
| }; |
| #endif |
| |
| /* MPLL configuration */ |
| #define SCU_MPLL_FREQ_400M 0x0008405F |
| #define SCU_MPLL_EXT_400M 0x0000002F |
| #define SCU_MPLL_FREQ_333M 0x00488299 |
| #define SCU_MPLL_EXT_333M 0x0000014C |
| #define SCU_MPLL_FREQ_200M 0x0078007F |
| #define SCU_MPLL_EXT_200M 0x0000003F |
| #define SCU_MPLL_FREQ_100M 0x0078003F |
| #define SCU_MPLL_EXT_100M 0x0000001F |
| |
| #if defined(CONFIG_ASPEED_DDR4_1600) |
| #define SCU_MPLL_FREQ_CFG SCU_MPLL_FREQ_400M |
| #define SCU_MPLL_EXT_CFG SCU_MPLL_EXT_400M |
| #elif defined(CONFIG_ASPEED_DDR4_1333) |
| #define SCU_MPLL_FREQ_CFG SCU_MPLL_FREQ_333M |
| #define SCU_MPLL_EXT_CFG SCU_MPLL_EXT_333M |
| #elif defined(CONFIG_ASPEED_DDR4_800) |
| #define SCU_MPLL_FREQ_CFG SCU_MPLL_FREQ_200M |
| #define SCU_MPLL_EXT_CFG SCU_MPLL_EXT_200M |
| #elif defined(CONFIG_ASPEED_DDR4_400) |
| #define SCU_MPLL_FREQ_CFG SCU_MPLL_FREQ_100M |
| #define SCU_MPLL_EXT_CFG SCU_MPLL_EXT_100M |
| #else |
| #error "undefined DDR4 target rate\n" |
| #endif |
| |
| /* |
| * AC timing and SDRAM mode register setting |
| * for real chip are derived from the model GDDR4-1600 |
| */ |
| #define DDR4_MR01_MODE ((MR1_VAL << 16) | MR0_VAL) |
| #define DDR4_MR23_MODE ((MR3_VAL << 16) | MR2_VAL) |
| #define DDR4_MR45_MODE ((MR5_VAL << 16) | MR4_VAL) |
| #define DDR4_MR6_MODE MR6_VAL |
| #define DDR4_TRFC_1600 0x467299f1 |
| #define DDR4_TRFC_1333 0x3a5f80c9 |
| #define DDR4_TRFC_800 0x23394c78 |
| #define DDR4_TRFC_400 0x111c263c |
| |
| #if defined(CONFIG_ASPEED_DDR4_1600) |
| #define DDR4_TRFC DDR4_TRFC_1600 |
| #define DDR4_PHY_TRAIN_TRFC 0xc30 |
| #elif defined(CONFIG_ASPEED_DDR4_1333) |
| #define DDR4_TRFC DDR4_TRFC_1333 |
| #define DDR4_PHY_TRAIN_TRFC 0xa25 |
| #elif defined(CONFIG_ASPEED_DDR4_800) |
| #define DDR4_TRFC DDR4_TRFC_800 |
| #define DDR4_PHY_TRAIN_TRFC 0x618 |
| #elif defined(CONFIG_ASPEED_DDR4_400) |
| #define DDR4_TRFC DDR4_TRFC_400 |
| #define DDR4_PHY_TRAIN_TRFC 0x30c |
| #else |
| #error "undefined tRFC setting" |
| #endif |
| |
| /* supported SDRAM size */ |
| #define SDRAM_SIZE_1KB (1024U) |
| #define SDRAM_SIZE_1MB (SDRAM_SIZE_1KB * SDRAM_SIZE_1KB) |
| #define SDRAM_MIN_SIZE (256 * SDRAM_SIZE_1MB) |
| #define SDRAM_MAX_SIZE (2048 * SDRAM_SIZE_1MB) |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| static const u32 ddr4_ac_timing[4] = { |
| 0x040e0307, 0x0f4711f1, 0x0e060304, 0x00001240 }; |
| static const u32 ddr_max_grant_params[4] = { |
| 0x44444444, 0x44444444, 0x44444444, 0x44444444 }; |
| |
| struct dram_info { |
| struct ram_info info; |
| struct clk ddr_clk; |
| struct ast2600_sdrammc_regs *regs; |
| struct ast2600_scu *scu; |
| struct ast2600_ddr_phy *phy; |
| void __iomem *phy_setting; |
| void __iomem *phy_status; |
| ulong clock_rate; |
| }; |
| |
| static void ast2600_sdramphy_kick_training(struct dram_info *info) |
| { |
| u32 data; |
| struct ast2600_sdrammc_regs *regs = info->regs; |
| |
| writel(SDRAM_PHYCTRL0_NRST, ®s->phy_ctrl[0]); |
| udelay(5); |
| writel(SDRAM_PHYCTRL0_NRST | SDRAM_PHYCTRL0_INIT, ®s->phy_ctrl[0]); |
| udelay(1000); |
| |
| while (1) { |
| data = readl(®s->phy_ctrl[0]) & SDRAM_PHYCTRL0_INIT; |
| if (data == 0) |
| break; |
| } |
| } |
| |
| /** |
| * @brief load DDR-PHY configurations table to the PHY registers |
| * @param[in] p_tbl - pointer to the configuration table |
| * @param[in] info - pointer to the DRAM info struct |
| * |
| * There are two sets of MRS (Mode Registers) configuration in ast2600 memory |
| * system: one is in the SDRAM MC (memory controller) which is used in run |
| * time, and the other is in the DDR-PHY IP which is used during DDR-PHY |
| * training. |
| */ |
| static void ast2600_sdramphy_init(u32 *p_tbl, struct dram_info *info) |
| { |
| u32 reg_base = (u32)info->phy_setting; |
| u32 addr = p_tbl[0]; |
| u32 data; |
| int i = 1; |
| |
| writel(0, &info->regs->phy_ctrl[0]); |
| udelay(10); |
| |
| while (1) { |
| if (addr < reg_base) { |
| debug("invalid DDR-PHY addr: 0x%08x\n", addr); |
| break; |
| } |
| data = p_tbl[i++]; |
| |
| if (data == DDR_PHY_TBL_END) { |
| break; |
| } else if (data == DDR_PHY_TBL_CHG_ADDR) { |
| addr = p_tbl[i++]; |
| } else { |
| writel(data, addr); |
| addr += 4; |
| } |
| } |
| |
| data = readl(info->phy_setting + 0x84) & ~GENMASK(16, 0); |
| data |= DDR4_PHY_TRAIN_TRFC; |
| writel(data, info->phy_setting + 0x84); |
| } |
| |
| static int ast2600_sdramphy_check_status(struct dram_info *info) |
| { |
| u32 value, tmp; |
| u32 reg_base = (u32)info->phy_status; |
| int need_retrain = 0; |
| |
| debug("\nSDRAM PHY training report:\n"); |
| |
| /* training status */ |
| value = readl(reg_base + 0x00); |
| debug("rO_DDRPHY_reg offset 0x00 = 0x%08x\n", value); |
| |
| if (value & BIT(3)) |
| debug("\tinitial PVT calibration fail\n"); |
| |
| if (value & BIT(5)) |
| debug("\truntime calibration fail\n"); |
| |
| /* PU & PD */ |
| value = readl(reg_base + 0x30); |
| debug("rO_DDRPHY_reg offset 0x30 = 0x%08x\n", value); |
| debug(" PU = 0x%02x\n", value & 0xff); |
| debug(" PD = 0x%02x\n", (value >> 16) & 0xff); |
| |
| /* read eye window */ |
| value = readl(reg_base + 0x68); |
| if (0 == (value & GENMASK(7, 0))) |
| need_retrain = 1; |
| |
| debug("rO_DDRPHY_reg offset 0x68 = 0x%08x\n", value); |
| debug(" rising edge of read data eye training pass window\n"); |
| tmp = (((value & GENMASK(7, 0)) >> 0) * 100) / 255; |
| debug(" B0:%d%%\n", tmp); |
| tmp = (((value & GENMASK(15, 8)) >> 8) * 100) / 255; |
| debug(" B1:%d%%\n", tmp); |
| |
| value = readl(reg_base + 0xC8); |
| debug("rO_DDRPHY_reg offset 0xC8 = 0x%08x\n", value); |
| debug(" falling edge of read data eye training pass window\n"); |
| tmp = (((value & GENMASK(7, 0)) >> 0) * 100) / 255; |
| debug(" B0:%d%%\n", tmp); |
| tmp = (((value & GENMASK(15, 8)) >> 8) * 100) / 255; |
| debug(" B1:%d%%\n", tmp); |
| |
| /* write eye window */ |
| value = readl(reg_base + 0x7c); |
| if (0 == (value & GENMASK(7, 0))) |
| need_retrain = 1; |
| |
| debug("rO_DDRPHY_reg offset 0x7C = 0x%08x\n", value); |
| debug(" rising edge of write data eye training pass window\n"); |
| tmp = (((value & GENMASK(7, 0)) >> 0) * 100) / 255; |
| debug(" B0:%d%%\n", tmp); |
| tmp = (((value & GENMASK(15, 8)) >> 8) * 100) / 255; |
| debug(" B1:%d%%\n", tmp); |
| |
| /* read Vref training result */ |
| value = readl(reg_base + 0x88); |
| debug("rO_DDRPHY_reg offset 0x88 = 0x%08x\n", value); |
| debug(" read Vref training result\n"); |
| tmp = (((value & GENMASK(7, 0)) >> 0) * 100) / 127; |
| debug(" B0:%d%%\n", tmp); |
| tmp = (((value & GENMASK(15, 8)) >> 8) * 100) / 127; |
| debug(" B1:%d%%\n", tmp); |
| |
| /* write Vref training result */ |
| value = readl(reg_base + 0x90); |
| debug("rO_DDRPHY_reg offset 0x90 = 0x%08x\n", value); |
| |
| /* gate train */ |
| value = readl(reg_base + 0x50); |
| if ((0 == (value & GENMASK(15, 0))) || |
| (0 == (value & GENMASK(31, 16)))) { |
| need_retrain = 1; |
| } |
| |
| debug("rO_DDRPHY_reg offset 0x50 = 0x%08x\n", value); |
| |
| return need_retrain; |
| } |
| |
| #ifndef CONFIG_ASPEED_BYPASS_SELFTEST |
| #define MC_TEST_PATTERN_N 8 |
| static u32 as2600_sdrammc_test_pattern[MC_TEST_PATTERN_N] = { |
| 0xcc33cc33, 0xff00ff00, 0xaa55aa55, 0x88778877, |
| 0x92cc4d6e, 0x543d3cde, 0xf1e843c7, 0x7c61d253 }; |
| |
| #define TIMEOUT_DRAM 5000000 |
| int ast2600_sdrammc_dg_test(struct dram_info *info, unsigned int datagen, u32 mode) |
| { |
| unsigned int data; |
| unsigned int timeout = 0; |
| struct ast2600_sdrammc_regs *regs = info->regs; |
| |
| writel(0, ®s->ecc_test_ctrl); |
| |
| if (mode == 0) |
| writel(0x00000085 | (datagen << 3), ®s->ecc_test_ctrl); |
| else |
| writel(0x000000C1 | (datagen << 3), ®s->ecc_test_ctrl); |
| |
| do { |
| data = readl(®s->ecc_test_ctrl) & GENMASK(13, 12); |
| |
| if (data & BIT(13)) |
| return 0; |
| |
| if (++timeout > TIMEOUT_DRAM) { |
| debug("Timeout!!\n"); |
| writel(0, ®s->ecc_test_ctrl); |
| return -1; |
| } |
| } while (!data); |
| |
| writel(0, ®s->ecc_test_ctrl); |
| |
| return 0; |
| } |
| |
| int ast2600_sdrammc_cbr_test(struct dram_info *info) |
| { |
| u32 i; |
| struct ast2600_sdrammc_regs *regs = info->regs; |
| |
| clrsetbits_le32(®s->test_addr, GENMASK(30, 4), 0x7ffff0); |
| |
| /* single */ |
| for (i = 0; i < 8; i++) |
| if (ast2600_sdrammc_dg_test(info, i, 0)) |
| return -1; |
| |
| /* burst */ |
| for (i = 0; i < 8; i++) |
| if (ast2600_sdrammc_dg_test(info, i, i)) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int ast2600_sdrammc_test(struct dram_info *info) |
| { |
| struct ast2600_sdrammc_regs *regs = info->regs; |
| |
| u32 pass_cnt = 0; |
| u32 fail_cnt = 0; |
| u32 target_cnt = 2; |
| u32 test_cnt = 0; |
| u32 pattern; |
| u32 i = 0; |
| bool finish = false; |
| |
| debug("sdram mc test:\n"); |
| while (!finish) { |
| pattern = as2600_sdrammc_test_pattern[i++]; |
| i = i % MC_TEST_PATTERN_N; |
| debug(" pattern = %08X : ", pattern); |
| writel(pattern, ®s->test_init_val); |
| |
| if (ast2600_sdrammc_cbr_test(info)) { |
| debug("fail\n"); |
| fail_cnt++; |
| } else { |
| debug("pass\n"); |
| pass_cnt++; |
| } |
| |
| if (++test_cnt == target_cnt) |
| finish = true; |
| } |
| debug("statistics: pass/fail/total:%d/%d/%d\n", pass_cnt, fail_cnt, |
| target_cnt); |
| |
| return fail_cnt; |
| } |
| #endif |
| |
| /* |
| * scu500[14:13] |
| * 2b'00: VGA memory size = 16MB |
| * 2b'01: VGA memory size = 16MB |
| * 2b'10: VGA memory size = 32MB |
| * 2b'11: VGA memory size = 64MB |
| * |
| * mcr04[3:2] |
| * 2b'00: VGA memory size = 8MB |
| * 2b'01: VGA memory size = 16MB |
| * 2b'10: VGA memory size = 32MB |
| * 2b'11: VGA memory size = 64MB |
| */ |
| static size_t ast2600_sdrammc_get_vga_mem_size(struct dram_info *info) |
| { |
| u32 vga_hwconf; |
| size_t vga_mem_size_base = 8 * 1024 * 1024; |
| |
| vga_hwconf = |
| (readl(&info->scu->hwstrap1) & SCU_HWSTRAP1_VGA_MEM_MASK) >> |
| SCU_HWSTRAP1_VGA_MEM_SHIFT; |
| |
| if (vga_hwconf == 0) { |
| vga_hwconf = 1; |
| writel(vga_hwconf << SCU_HWSTRAP1_VGA_MEM_SHIFT, |
| &info->scu->hwstrap1); |
| } |
| |
| clrsetbits_le32(&info->regs->config, SDRAM_CONF_VGA_SIZE_MASK, |
| ((vga_hwconf << SDRAM_CONF_VGA_SIZE_SHIFT) & |
| SDRAM_CONF_VGA_SIZE_MASK)); |
| |
| /* no need to reserve VGA memory if efuse[VGA disable] is set */ |
| if (readl(&info->scu->efuse) & SCU_EFUSE_DIS_VGA) |
| return 0; |
| |
| return vga_mem_size_base << vga_hwconf; |
| } |
| |
| /* |
| * Find out RAM size and save it in dram_info |
| * |
| * The procedure is taken from Aspeed SDK |
| */ |
| static void ast2600_sdrammc_calc_size(struct dram_info *info) |
| { |
| /* The controller supports 256/512/1024/2048 MB ram */ |
| size_t ram_size = SDRAM_MIN_SIZE; |
| const int write_test_offset = 0x100000; |
| u32 test_pattern = 0xdeadbeef; |
| u32 cap_param = SDRAM_CONF_CAP_2048M; |
| u32 refresh_timing_param = DDR4_TRFC; |
| const u32 write_addr_base = CFG_SYS_SDRAM_BASE + write_test_offset; |
| |
| for (ram_size = SDRAM_MAX_SIZE; ram_size > SDRAM_MIN_SIZE; |
| ram_size >>= 1) { |
| writel(test_pattern, write_addr_base + (ram_size >> 1)); |
| test_pattern = (test_pattern >> 4) | (test_pattern << 28); |
| } |
| |
| /* One last write to overwrite all wrapped values */ |
| writel(test_pattern, write_addr_base); |
| |
| /* Reset the pattern and see which value was really written */ |
| test_pattern = 0xdeadbeef; |
| for (ram_size = SDRAM_MAX_SIZE; ram_size > SDRAM_MIN_SIZE; |
| ram_size >>= 1) { |
| if (readl(write_addr_base + (ram_size >> 1)) == test_pattern) |
| break; |
| |
| --cap_param; |
| refresh_timing_param >>= 8; |
| test_pattern = (test_pattern >> 4) | (test_pattern << 28); |
| } |
| |
| clrsetbits_le32(&info->regs->ac_timing[1], |
| (SDRAM_AC_TRFC_MASK << SDRAM_AC_TRFC_SHIFT), |
| ((refresh_timing_param & SDRAM_AC_TRFC_MASK) |
| << SDRAM_AC_TRFC_SHIFT)); |
| |
| info->info.base = CFG_SYS_SDRAM_BASE; |
| info->info.size = ram_size - ast2600_sdrammc_get_vga_mem_size(info); |
| |
| clrsetbits_le32(&info->regs->config, SDRAM_CONF_CAP_MASK, |
| ((cap_param << SDRAM_CONF_CAP_SHIFT) & SDRAM_CONF_CAP_MASK)); |
| } |
| |
| static int ast2600_sdrammc_init_ddr4(struct dram_info *info) |
| { |
| const u32 power_ctrl = MCR34_CKE_EN | MCR34_AUTOPWRDN_EN | |
| MCR34_MREQ_BYPASS_DIS | MCR34_RESETN_DIS | |
| MCR34_ODT_EN | MCR34_ODT_AUTO_ON | |
| (0x1 << MCR34_ODT_EXT_SHIFT); |
| |
| /* init SDRAM-PHY only on real chip */ |
| ast2600_sdramphy_init(ast2600_sdramphy_config, info); |
| writel((MCR34_CKE_EN | MCR34_MREQI_DIS | MCR34_RESETN_DIS), |
| &info->regs->power_ctrl); |
| udelay(5); |
| ast2600_sdramphy_kick_training(info); |
| udelay(500); |
| writel(SDRAM_RESET_DLL_ZQCL_EN, &info->regs->refresh_timing); |
| |
| writel(MCR30_SET_MR(3), &info->regs->mode_setting_control); |
| writel(MCR30_SET_MR(6), &info->regs->mode_setting_control); |
| writel(MCR30_SET_MR(5), &info->regs->mode_setting_control); |
| writel(MCR30_SET_MR(4), &info->regs->mode_setting_control); |
| writel(MCR30_SET_MR(2), &info->regs->mode_setting_control); |
| writel(MCR30_SET_MR(1), &info->regs->mode_setting_control); |
| writel(MCR30_SET_MR(0) | MCR30_RESET_DLL_DELAY_EN, |
| &info->regs->mode_setting_control); |
| |
| writel(SDRAM_REFRESH_EN | SDRAM_RESET_DLL_ZQCL_EN | |
| (0x5f << SDRAM_REFRESH_PERIOD_SHIFT), |
| &info->regs->refresh_timing); |
| |
| /* wait self-refresh idle */ |
| while (readl(&info->regs->power_ctrl) & |
| MCR34_SELF_REFRESH_STATUS_MASK) |
| ; |
| |
| writel(SDRAM_REFRESH_EN | SDRAM_LOW_PRI_REFRESH_EN | |
| SDRAM_REFRESH_ZQCS_EN | |
| (0x5f << SDRAM_REFRESH_PERIOD_SHIFT) | |
| (0x42aa << SDRAM_REFRESH_PERIOD_ZQCS_SHIFT), |
| &info->regs->refresh_timing); |
| |
| writel(power_ctrl, &info->regs->power_ctrl); |
| udelay(500); |
| |
| return 0; |
| } |
| |
| static void ast2600_sdrammc_unlock(struct dram_info *info) |
| { |
| writel(SDRAM_UNLOCK_KEY, &info->regs->protection_key); |
| while (!readl(&info->regs->protection_key)) |
| ; |
| } |
| |
| static void ast2600_sdrammc_lock(struct dram_info *info) |
| { |
| writel(~SDRAM_UNLOCK_KEY, &info->regs->protection_key); |
| while (readl(&info->regs->protection_key)) |
| ; |
| } |
| |
| static void ast2600_sdrammc_common_init(struct ast2600_sdrammc_regs *regs) |
| { |
| int i; |
| u32 reg; |
| |
| writel(MCR34_MREQI_DIS | MCR34_RESETN_DIS, ®s->power_ctrl); |
| writel(SDRAM_VIDEO_UNLOCK_KEY, ®s->gm_protection_key); |
| writel(0x10 << MCR38_RW_MAX_GRANT_CNT_RQ_SHIFT, |
| ®s->arbitration_ctrl); |
| writel(0xFFBBFFF4, ®s->req_limit_mask); |
| |
| for (i = 0; i < ARRAY_SIZE(ddr_max_grant_params); ++i) |
| writel(ddr_max_grant_params[i], ®s->max_grant_len[i]); |
| |
| writel(MCR50_RESET_ALL_INTR, ®s->intr_ctrl); |
| |
| writel(0x07FFFFFF, ®s->ecc_range_ctrl); |
| |
| writel(0, ®s->ecc_test_ctrl); |
| writel(0x80000001, ®s->test_addr); |
| writel(0, ®s->test_fail_dq_bit); |
| writel(0, ®s->test_init_val); |
| |
| writel(0xFFFFFFFF, ®s->req_input_ctrl); |
| writel(0, ®s->req_high_pri_ctrl); |
| |
| udelay(600); |
| |
| #ifdef CONFIG_ASPEED_DDR4_DUALX8 |
| writel(0x37, ®s->config); |
| #else |
| writel(0x17, ®s->config); |
| #endif |
| |
| /* load controller setting */ |
| for (i = 0; i < ARRAY_SIZE(ddr4_ac_timing); ++i) |
| writel(ddr4_ac_timing[i], ®s->ac_timing[i]); |
| |
| /* update CL and WL */ |
| reg = readl(®s->ac_timing[1]); |
| reg &= ~(SDRAM_WL_SETTING | SDRAM_CL_SETTING); |
| reg |= FIELD_PREP(SDRAM_WL_SETTING, CFG_WL - 5) | |
| FIELD_PREP(SDRAM_CL_SETTING, CFG_RL - 5); |
| writel(reg, ®s->ac_timing[1]); |
| |
| writel(DDR4_MR01_MODE, ®s->mr01_mode_setting); |
| writel(DDR4_MR23_MODE, ®s->mr23_mode_setting); |
| writel(DDR4_MR45_MODE, ®s->mr45_mode_setting); |
| writel(DDR4_MR6_MODE, ®s->mr6_mode_setting); |
| } |
| |
| /* |
| * Update size info according to the ECC HW setting |
| * |
| * Assume SDRAM has been initialized by SPL or the host. To get the RAM size, we |
| * don't need to calculate the ECC size again but read from MCR04 and derive the |
| * size from its value. |
| */ |
| static void ast2600_sdrammc_update_size(struct dram_info *info) |
| { |
| struct ast2600_sdrammc_regs *regs = info->regs; |
| u32 conf = readl(®s->config); |
| u32 cap_param; |
| size_t ram_size = SDRAM_MAX_SIZE; |
| size_t hw_size; |
| |
| cap_param = (conf & SDRAM_CONF_CAP_MASK) >> SDRAM_CONF_CAP_SHIFT; |
| switch (cap_param) { |
| case SDRAM_CONF_CAP_2048M: |
| ram_size = 2048 * SDRAM_SIZE_1MB; |
| break; |
| case SDRAM_CONF_CAP_1024M: |
| ram_size = 1024 * SDRAM_SIZE_1MB; |
| break; |
| case SDRAM_CONF_CAP_512M: |
| ram_size = 512 * SDRAM_SIZE_1MB; |
| break; |
| case SDRAM_CONF_CAP_256M: |
| ram_size = 256 * SDRAM_SIZE_1MB; |
| break; |
| } |
| |
| info->info.base = CFG_SYS_SDRAM_BASE; |
| info->info.size = ram_size - ast2600_sdrammc_get_vga_mem_size(info); |
| |
| if (0 == (conf & SDRAM_CONF_ECC_SETUP)) |
| return; |
| |
| hw_size = readl(®s->ecc_range_ctrl) & SDRAM_ECC_RANGE_ADDR_MASK; |
| hw_size += (1 << SDRAM_ECC_RANGE_ADDR_SHIFT); |
| |
| info->info.size = hw_size; |
| } |
| |
| #ifdef CONFIG_ASPEED_ECC |
| static void ast2600_sdrammc_ecc_enable(struct dram_info *info) |
| { |
| struct ast2600_sdrammc_regs *regs = info->regs; |
| size_t conf_size; |
| u32 reg; |
| |
| conf_size = CONFIG_ASPEED_ECC_SIZE * SDRAM_SIZE_1MB; |
| if (conf_size > info->info.size) { |
| printf("warning: ECC configured %dMB but actual size is %dMB\n", |
| CONFIG_ASPEED_ECC_SIZE, |
| info->info.size / SDRAM_SIZE_1MB); |
| conf_size = info->info.size; |
| } else if (conf_size == 0) { |
| conf_size = info->info.size; |
| } |
| |
| info->info.size = (((conf_size / 9) * 8) >> 20) << 20; |
| writel(((info->info.size >> 20) - 1) << 20, ®s->ecc_range_ctrl); |
| reg = readl(®s->config) | SDRAM_CONF_ECC_SETUP; |
| writel(reg, ®s->config); |
| |
| writel(0, ®s->test_init_val); |
| writel(0x80000001, ®s->test_addr); |
| writel(0x221, ®s->ecc_test_ctrl); |
| while (0 == (readl(®s->ecc_test_ctrl) & BIT(12))) |
| ; |
| writel(0, ®s->ecc_test_ctrl); |
| writel(BIT(31), ®s->intr_ctrl); |
| writel(0, ®s->intr_ctrl); |
| } |
| #endif |
| |
| static int ast2600_sdrammc_probe(struct udevice *dev) |
| { |
| int ret; |
| u32 reg; |
| struct dram_info *priv = (struct dram_info *)dev_get_priv(dev); |
| struct ast2600_sdrammc_regs *regs = priv->regs; |
| struct udevice *clk_dev; |
| |
| /* find SCU base address from clock device */ |
| ret = uclass_get_device_by_driver(UCLASS_CLK, |
| DM_DRIVER_GET(aspeed_ast2600_scu), &clk_dev); |
| if (ret) { |
| debug("clock device not defined\n"); |
| return ret; |
| } |
| |
| priv->scu = devfdt_get_addr_ptr(clk_dev); |
| if (IS_ERR(priv->scu)) { |
| debug("%s(): can't get SCU\n", __func__); |
| return PTR_ERR(priv->scu); |
| } |
| |
| if (readl(&priv->scu->dram_hdshk) & SCU_DRAM_HDSHK_RDY) { |
| printf("already initialized, "); |
| ast2600_sdrammc_update_size(priv); |
| return 0; |
| } |
| |
| reg = readl(&priv->scu->mpll); |
| reg &= ~(SCU_PLL_BYPASS | SCU_PLL_OFF | SCU_PLL_DIV_MASK | |
| SCU_PLL_DENUM_MASK | SCU_PLL_NUM_MASK); |
| reg |= (SCU_PLL_RST | SCU_MPLL_FREQ_CFG); |
| writel(reg, &priv->scu->mpll); |
| writel(SCU_MPLL_EXT_CFG, &priv->scu->mpll_ext); |
| udelay(100); |
| reg &= ~SCU_PLL_RST; |
| writel(reg, &priv->scu->mpll); |
| |
| while ((readl(&priv->scu->mpll_ext) & BIT(31)) == 0) |
| ; |
| |
| ast2600_sdrammc_unlock(priv); |
| ast2600_sdrammc_common_init(regs); |
| L_ast2600_sdramphy_train: |
| ast2600_sdrammc_init_ddr4(priv); |
| |
| if (ast2600_sdramphy_check_status(priv) != 0) { |
| printf("DDR4 PHY training fail, retrain\n"); |
| goto L_ast2600_sdramphy_train; |
| } |
| |
| ast2600_sdrammc_calc_size(priv); |
| |
| #ifndef CONFIG_ASPEED_BYPASS_SELFTEST |
| if (ast2600_sdrammc_test(priv) != 0) { |
| printf("%s: DDR4 init fail\n", __func__); |
| return -EINVAL; |
| } |
| #endif |
| |
| #ifdef CONFIG_ASPEED_ECC |
| ast2600_sdrammc_ecc_enable(priv); |
| #endif |
| |
| writel(readl(&priv->scu->dram_hdshk) | SCU_DRAM_HDSHK_RDY, |
| &priv->scu->dram_hdshk); |
| |
| clrbits_le32(®s->intr_ctrl, MCR50_RESET_ALL_INTR); |
| ast2600_sdrammc_lock(priv); |
| return 0; |
| } |
| |
| static int ast2600_sdrammc_of_to_plat(struct udevice *dev) |
| { |
| struct dram_info *priv = dev_get_priv(dev); |
| |
| priv->regs = (void *)(uintptr_t)devfdt_get_addr_index(dev, 0); |
| priv->phy_setting = (void *)(uintptr_t)devfdt_get_addr_index(dev, 1); |
| priv->phy_status = (void *)(uintptr_t)devfdt_get_addr_index(dev, 2); |
| |
| priv->clock_rate = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), |
| "clock-frequency", 0); |
| if (!priv->clock_rate) { |
| debug("DDR Clock Rate not defined\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int ast2600_sdrammc_get_info(struct udevice *dev, struct ram_info *info) |
| { |
| struct dram_info *priv = dev_get_priv(dev); |
| |
| *info = priv->info; |
| |
| return 0; |
| } |
| |
| static struct ram_ops ast2600_sdrammc_ops = { |
| .get_info = ast2600_sdrammc_get_info, |
| }; |
| |
| static const struct udevice_id ast2600_sdrammc_ids[] = { |
| { .compatible = "aspeed,ast2600-sdrammc" }, |
| { } |
| }; |
| |
| U_BOOT_DRIVER(sdrammc_ast2600) = { |
| .name = "aspeed_ast2600_sdrammc", |
| .id = UCLASS_RAM, |
| .of_match = ast2600_sdrammc_ids, |
| .ops = &ast2600_sdrammc_ops, |
| .of_to_plat = ast2600_sdrammc_of_to_plat, |
| .probe = ast2600_sdrammc_probe, |
| .priv_auto = sizeof(struct dram_info), |
| }; |
