2 * TNETV107X: Asynchronous EMIF Configuration
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <asm/arch/clock.h>
10 #include <asm/arch/mux.h>
12 #define ASYNC_EMIF_BASE TNETV107X_ASYNC_EMIF_CNTRL_BASE
13 #define ASYNC_EMIF_CONFIG(cs) (ASYNC_EMIF_BASE+0x10+(cs)*4)
14 #define ASYNC_EMIF_ONENAND_CONTROL (ASYNC_EMIF_BASE+0x5c)
15 #define ASYNC_EMIF_NAND_CONTROL (ASYNC_EMIF_BASE+0x60)
16 #define ASYNC_EMIF_WAITCYCLE_CONFIG (ASYNC_EMIF_BASE+0x4)
18 #define CONFIG_SELECT_STROBE(v) ((v) ? 1 << 31 : 0)
19 #define CONFIG_EXTEND_WAIT(v) ((v) ? 1 << 30 : 0)
20 #define CONFIG_WR_SETUP(v) (((v) & 0x0f) << 26)
21 #define CONFIG_WR_STROBE(v) (((v) & 0x3f) << 20)
22 #define CONFIG_WR_HOLD(v) (((v) & 0x07) << 17)
23 #define CONFIG_RD_SETUP(v) (((v) & 0x0f) << 13)
24 #define CONFIG_RD_STROBE(v) (((v) & 0x3f) << 7)
25 #define CONFIG_RD_HOLD(v) (((v) & 0x07) << 4)
26 #define CONFIG_TURN_AROUND(v) (((v) & 0x03) << 2)
27 #define CONFIG_WIDTH(v) (((v) & 0x03) << 0)
31 #define set_config_field(reg, field, val) \
34 reg &= ~CONFIG_##field(0xffffffff); \
35 reg |= CONFIG_##field(val); \
39 void configure_async_emif(int cs, struct async_emif_config *cfg)
43 if (cfg->mode == ASYNC_EMIF_MODE_NAND) {
44 tmp = __raw_readl(ASYNC_EMIF_NAND_CONTROL);
46 __raw_writel(tmp, ASYNC_EMIF_NAND_CONTROL);
48 } else if (cfg->mode == ASYNC_EMIF_MODE_ONENAND) {
49 tmp = __raw_readl(ASYNC_EMIF_ONENAND_CONTROL);
51 __raw_writel(tmp, ASYNC_EMIF_ONENAND_CONTROL);
54 tmp = __raw_readl(ASYNC_EMIF_CONFIG(cs));
56 set_config_field(tmp, SELECT_STROBE, cfg->select_strobe);
57 set_config_field(tmp, EXTEND_WAIT, cfg->extend_wait);
58 set_config_field(tmp, WR_SETUP, cfg->wr_setup);
59 set_config_field(tmp, WR_STROBE, cfg->wr_strobe);
60 set_config_field(tmp, WR_HOLD, cfg->wr_hold);
61 set_config_field(tmp, RD_SETUP, cfg->rd_setup);
62 set_config_field(tmp, RD_STROBE, cfg->rd_strobe);
63 set_config_field(tmp, RD_HOLD, cfg->rd_hold);
64 set_config_field(tmp, TURN_AROUND, cfg->turn_around);
65 set_config_field(tmp, WIDTH, cfg->width);
67 __raw_writel(tmp, ASYNC_EMIF_CONFIG(cs));
70 void init_async_emif(int num_cs, struct async_emif_config *config)
74 clk_enable(TNETV107X_LPSC_AEMIF);
76 for (cs = 0; cs < num_cs; cs++)
77 configure_async_emif(cs, config + cs);