ram: aspeed: Add AST2600 DRAM control support
AST2600 supports DDR4 SDRAM with maximum speed DDR4-1600.
The DDR4 DRAM types including 128MbX16 (2Gb), 256MbX16 (4Gb),
512MbX16 (8Gb), 1GbX16 (16Gb), and 1GbX8 TwinDie (16Gb) are supported.
Signed-off-by: Dylan Hung <dylan_hung@aspeedtech.com>
Signed-off-by: Chia-Wei, Wang <chiawei_wang@aspeedtech.com>
Reviewed-by: Ryan Chen <ryan_chen@aspeedtech.com>
diff --git a/arch/arm/include/asm/arch-aspeed/sdram_ast2600.h b/arch/arm/include/asm/arch-aspeed/sdram_ast2600.h
new file mode 100644
index 0000000..d2408c0
--- /dev/null
+++ b/arch/arm/include/asm/arch-aspeed/sdram_ast2600.h
@@ -0,0 +1,163 @@
+/* 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 */