--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) Aspeed Technology Inc.
+ */
+#ifndef _ASM_ARCH_SDRAM_AST2600_H
+#define _ASM_ARCH_SDRAM_AST2600_H
+
+/* keys for unlocking HW */
+#define SDRAM_UNLOCK_KEY 0xFC600309
+#define SDRAM_VIDEO_UNLOCK_KEY 0x00440003
+
+/* Fixed priority DRAM Requests mask */
+#define REQ_PRI_VGA_HW_CURSOR_R 0
+#define REQ_PRI_VGA_CRT_R 1
+#define REQ_PRI_SOC_DISPLAY_CTRL_R 2
+#define REQ_PRI_PCIE_BUS1_RW 3
+#define REQ_PRI_VIDEO_HIGH_PRI_W 4
+#define REQ_PRI_CPU_RW 5
+#define REQ_PRI_SLI_RW 6
+#define REQ_PRI_PCIE_BUS2_RW 7
+#define REQ_PRI_USB2_0_HUB_EHCI1_DMA_RW 8
+#define REQ_PRI_USB2_0_DEV_EHCI2_DMA_RW 9
+#define REQ_PRI_USB1_1_UHCI_HOST_RW 10
+#define REQ_PRI_AHB_BUS_RW 11
+#define REQ_PRI_CM3_DATA_RW 12
+#define REQ_PRI_CM3_INST_R 13
+#define REQ_PRI_MAC0_DMA_RW 14
+#define REQ_PRI_MAC1_DMA_RW 15
+#define REQ_PRI_SDIO_DMA_RW 16
+#define REQ_PRI_PILOT_ENGINE_RW 17
+#define REQ_PRI_XDMA1_RW 18
+#define REQ_PRI_MCTP1_RW 19
+#define REQ_PRI_VIDEO_FLAG_RW 20
+#define REQ_PRI_VIDEO_LOW_PRI_W 21
+#define REQ_PRI_2D_ENGINE_DATA_RW 22
+#define REQ_PRI_ENC_ENGINE_RW 23
+#define REQ_PRI_MCTP2_RW 24
+#define REQ_PRI_XDMA2_RW 25
+#define REQ_PRI_ECC_RSA_RW 26
+
+#define MCR30_RESET_DLL_DELAY_EN BIT(4)
+#define MCR30_MODE_REG_SEL_SHIFT 1
+#define MCR30_MODE_REG_SEL_MASK GENMASK(3, 1)
+#define MCR30_SET_MODE_REG BIT(0)
+
+#define MCR30_SET_MR(mr) ((mr << MCR30_MODE_REG_SEL_SHIFT) | MCR30_SET_MODE_REG)
+
+#define MCR34_SELF_REFRESH_STATUS_MASK GENMASK(30, 28)
+
+#define MCR34_ODT_DELAY_SHIFT 12
+#define MCR34_ODT_DELAY_MASK GENMASK(15, 12)
+#define MCR34_ODT_EXT_SHIFT 10
+#define MCR34_ODT_EXT_MASK GENMASK(11, 10)
+#define MCR34_ODT_AUTO_ON BIT(9)
+#define MCR34_ODT_EN BIT(8)
+#define MCR34_RESETN_DIS BIT(7)
+#define MCR34_MREQI_DIS BIT(6)
+#define MCR34_MREQ_BYPASS_DIS BIT(5)
+#define MCR34_RGAP_CTRL_EN BIT(4)
+#define MCR34_CKE_OUT_IN_SELF_REF_DIS BIT(3)
+#define MCR34_FOURCE_SELF_REF_EN BIT(2)
+#define MCR34_AUTOPWRDN_EN BIT(1)
+#define MCR34_CKE_EN BIT(0)
+
+#define MCR38_RW_MAX_GRANT_CNT_RQ_SHIFT 16
+#define MCR38_RW_MAX_GRANT_CNT_RQ_MASK GENMASK(20, 16)
+
+/* default request queued limitation mask (0xFFBBFFF4) */
+#define MCR3C_DEFAULT_MASK \
+ ~(REQ_PRI_VGA_HW_CURSOR_R | REQ_PRI_VGA_CRT_R | REQ_PRI_PCIE_BUS1_RW | \
+ REQ_PRI_XDMA1_RW | REQ_PRI_2D_ENGINE_DATA_RW)
+
+#define MCR50_RESET_ALL_INTR BIT(31)
+#define SDRAM_CONF_ECC_AUTO_SCRUBBING BIT(9)
+#define SDRAM_CONF_SCRAMBLE BIT(8)
+#define SDRAM_CONF_ECC_EN BIT(7)
+#define SDRAM_CONF_DUALX8 BIT(5)
+#define SDRAM_CONF_DDR4 BIT(4)
+#define SDRAM_CONF_VGA_SIZE_SHIFT 2
+#define SDRAM_CONF_VGA_SIZE_MASK GENMASK(3, 2)
+#define SDRAM_CONF_CAP_SHIFT 0
+#define SDRAM_CONF_CAP_MASK GENMASK(1, 0)
+
+#define SDRAM_CONF_CAP_256M 0
+#define SDRAM_CONF_CAP_512M 1
+#define SDRAM_CONF_CAP_1024M 2
+#define SDRAM_CONF_CAP_2048M 3
+#define SDRAM_CONF_ECC_SETUP (SDRAM_CONF_ECC_AUTO_SCRUBBING | SDRAM_CONF_ECC_EN)
+
+#define SDRAM_MISC_DDR4_TREFRESH (1 << 3)
+
+#define SDRAM_PHYCTRL0_PLL_LOCKED BIT(4)
+#define SDRAM_PHYCTRL0_NRST BIT(2)
+#define SDRAM_PHYCTRL0_INIT BIT(0)
+
+/* MCR0C */
+#define SDRAM_REFRESH_PERIOD_ZQCS_SHIFT 16
+#define SDRAM_REFRESH_PERIOD_ZQCS_MASK GENMASK(31, 16)
+#define SDRAM_REFRESH_PERIOD_SHIFT 8
+#define SDRAM_REFRESH_PERIOD_MASK GENMASK(15, 8)
+#define SDRAM_REFRESH_ZQCS_EN BIT(7)
+#define SDRAM_RESET_DLL_ZQCL_EN BIT(6)
+#define SDRAM_LOW_PRI_REFRESH_EN BIT(5)
+#define SDRAM_FORCE_PRECHARGE_EN BIT(4)
+#define SDRAM_REFRESH_EN BIT(0)
+
+#define SDRAM_TEST_LEN_SHIFT 4
+#define SDRAM_TEST_LEN_MASK 0xfffff
+#define SDRAM_TEST_START_ADDR_SHIFT 24
+#define SDRAM_TEST_START_ADDR_MASK 0x3f
+
+#define SDRAM_TEST_EN (1 << 0)
+#define SDRAM_TEST_MODE_SHIFT 1
+#define SDRAM_TEST_MODE_MASK (0x3 << SDRAM_TEST_MODE_SHIFT)
+#define SDRAM_TEST_MODE_WO (0x0 << SDRAM_TEST_MODE_SHIFT)
+#define SDRAM_TEST_MODE_RB (0x1 << SDRAM_TEST_MODE_SHIFT)
+#define SDRAM_TEST_MODE_RW (0x2 << SDRAM_TEST_MODE_SHIFT)
+
+#define SDRAM_TEST_GEN_MODE_SHIFT 3
+#define SDRAM_TEST_GEN_MODE_MASK (7 << SDRAM_TEST_GEN_MODE_SHIFT)
+#define SDRAM_TEST_TWO_MODES (1 << 6)
+#define SDRAM_TEST_ERRSTOP (1 << 7)
+#define SDRAM_TEST_DONE (1 << 12)
+#define SDRAM_TEST_FAIL (1 << 13)
+
+#define SDRAM_AC_TRFC_SHIFT 0
+#define SDRAM_AC_TRFC_MASK 0xff
+
+#define SDRAM_ECC_RANGE_ADDR_MASK GENMASK(30, 20)
+#define SDRAM_ECC_RANGE_ADDR_SHIFT 20
+
+#ifndef __ASSEMBLY__
+struct ast2600_sdrammc_regs {
+ u32 protection_key; /* offset 0x00 */
+ u32 config; /* offset 0x04 */
+ u32 gm_protection_key; /* offset 0x08 */
+ u32 refresh_timing; /* offset 0x0C */
+ u32 ac_timing[4]; /* offset 0x10 ~ 0x1C */
+ u32 mr01_mode_setting; /* offset 0x20 */
+ u32 mr23_mode_setting; /* offset 0x24 */
+ u32 mr45_mode_setting; /* offset 0x28 */
+ u32 mr6_mode_setting; /* offset 0x2C */
+ u32 mode_setting_control; /* offset 0x30 */
+ u32 power_ctrl; /* offset 0x34 */
+ u32 arbitration_ctrl; /* offset 0x38 */
+ u32 req_limit_mask; /* offset 0x3C */
+ u32 max_grant_len[4]; /* offset 0x40 ~ 0x4C */
+ u32 intr_ctrl; /* offset 0x50 */
+ u32 ecc_range_ctrl; /* offset 0x54 */
+ u32 first_ecc_err_addr; /* offset 0x58 */
+ u32 last_ecc_err_addr; /* offset 0x5C */
+ u32 phy_ctrl[4]; /* offset 0x60 ~ 0x6C */
+ u32 ecc_test_ctrl; /* offset 0x70 */
+ u32 test_addr; /* offset 0x74 */
+ u32 test_fail_dq_bit; /* offset 0x78 */
+ u32 test_init_val; /* offset 0x7C */
+ u32 req_input_ctrl; /* offset 0x80 */
+ u32 req_high_pri_ctrl; /* offset 0x84 */
+ u32 reserved0[6]; /* offset 0x88 ~ 0x9C */
+};
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_ARCH_SDRAM_AST2600_H */
--- /dev/null
+// 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 <linux/err.h>
+#include <linux/kernel.h>
+#include <dt-bindings/clock/ast2600-clock.h>
+
+#define DDR_PHY_TBL_CHG_ADDR 0xaeeddeea
+#define DDR_PHY_TBL_END 0xaeededed
+
+#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
+ 0x00077600, // phyr030
+ 0x00000000, // phyr034
+ 0x00000000, // phyr038
+ 0x20000000, // phyr03c
+ 0x50506000, // phyr040
+ 0x50505050, // phyr044
+ 0x00002f07, // phyr048
+ 0x00003080, // phyr04c
+ 0x04000000, // phyr050
+ 0x00000200, // phyr054
+ 0x03140201, // phyr058
+ 0x04800000, // phyr05c
+ 0x0800044e, // phyr060
+ 0x00000000, // phyr064
+ 0x00180008, // phyr068
+ 0x00e00400, // phyr06c
+ 0x00140206, // phyr070
+ 0x1d4c0000, // phyr074
+ 0x493e0107, // phyr078
+ 0x08060404, // phyr07c
+ 0x90000a00, // 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
+ 0x80000000, // 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
+ 0x20200800, // 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
+ 0x00000800, // 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
+ 0x00077600, // phyr030
+ 0x00000000, // phyr034
+ 0x00000000, // phyr038
+ 0x20000000, // phyr03c
+ 0x50506000, // phyr040
+ 0x50505050, // phyr044
+ 0x00002f07, // phyr048
+ 0x00003080, // phyr04c
+ 0x04000000, // phyr050
+ 0x00000200, // phyr054
+ 0x03140501, // phyr058-rtt:40
+ 0x04800000, // phyr05c
+ 0x0800044e, // phyr060
+ 0x00000000, // phyr064
+ 0x00180008, // phyr068
+ 0x00e00400, // phyr06c
+ 0x00140206, // phyr070
+ 0x1d4c0000, // phyr074
+ 0x493e0107, // phyr078
+ 0x08060404, // phyr07c
+ 0x90000a00, // 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 - bit12=1,15=0,- write window is ok
+ 0xaeeddeea, // change address
+ 0x1e6e019c, // new address
+ 0x20202020, // phyr09c
+ 0x20202020, // phyr0a0
+ 0x00002020, // phyr0a4
+ 0x80000000, // 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
+ 0x20200800, // 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
+ 0x00000800, // 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 0x03010510
+#define DDR4_MR23_MODE 0x00000000
+#define DDR4_MR45_MODE 0x04000000
+#define DDR4_MR6_MODE 0x00000400
+#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)
+ 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 = CONFIG_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 = CONFIG_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;
+
+ 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]);
+
+ 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 = CONFIG_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_DIV_MASK |
+ SCU_PLL_DENUM_MASK | SCU_PLL_NUM_MASK);
+ reg |= (SCU_PLL_RST | SCU_PLL_OFF | SCU_MPLL_FREQ_CFG);
+ writel(reg, &priv->scu->mpll);
+ writel(SCU_MPLL_EXT_CFG, &priv->scu->mpll_ext);
+ udelay(100);
+ reg &= ~(SCU_PLL_RST | SCU_PLL_OFF);
+ 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);
+
+ /* make sure DDR-PHY is ready before access */
+ do {
+ reg = readl(priv->phy_status) & BIT(1);
+ } while (reg == 0);
+
+ 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),
+};
projects / u-boot.git / commitdiff
