diff options
Diffstat (limited to 'arch/blackfin/mach-common/clocks-init.c')
| -rw-r--r-- | arch/blackfin/mach-common/clocks-init.c | 153 |
1 files changed, 152 insertions, 1 deletions
diff --git a/arch/blackfin/mach-common/clocks-init.c b/arch/blackfin/mach-common/clocks-init.c index d5cfe611b77..7ad2407d157 100644 --- a/arch/blackfin/mach-common/clocks-init.c +++ b/arch/blackfin/mach-common/clocks-init.c @@ -15,10 +15,121 @@ #include <asm/mem_init.h> #include <asm/dpmc.h> +#ifdef CONFIG_BF60x +#define CSEL_P 0 +#define S0SEL_P 5 +#define SYSSEL_P 8 +#define S1SEL_P 13 +#define DSEL_P 16 +#define OSEL_P 22 +#define ALGN_P 29 +#define UPDT_P 30 +#define LOCK_P 31 + +#define CGU_CTL_VAL ((CONFIG_VCO_MULT << 8) | CLKIN_HALF) +#define CGU_DIV_VAL \ + ((CONFIG_CCLK_DIV << CSEL_P) | \ + (CONFIG_SCLK_DIV << SYSSEL_P) | \ + (CONFIG_SCLK0_DIV << S0SEL_P) | \ + (CONFIG_SCLK1_DIV << S1SEL_P) | \ + (CONFIG_DCLK_DIV << DSEL_P)) + +#define CONFIG_BFIN_DCLK (((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) / CONFIG_DCLK_DIV) / 1000000) +#if ((CONFIG_BFIN_DCLK != 125) && \ + (CONFIG_BFIN_DCLK != 133) && (CONFIG_BFIN_DCLK != 150) && \ + (CONFIG_BFIN_DCLK != 166) && (CONFIG_BFIN_DCLK != 200) && \ + (CONFIG_BFIN_DCLK != 225) && (CONFIG_BFIN_DCLK != 250)) +#error "DCLK must be in (125, 133, 150, 166, 200, 225, 250)MHz" +#endif +struct ddr_config { + u32 ddr_clk; + u32 dmc_ddrctl; + u32 dmc_ddrcfg; + u32 dmc_ddrtr0; + u32 dmc_ddrtr1; + u32 dmc_ddrtr2; + u32 dmc_ddrmr; + u32 dmc_ddrmr1; +}; + +struct ddr_config ddr_config_table[] __attribute__((section(".data_l1"))) = { + [0] = { + .ddr_clk = 125, + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20705212, + .dmc_ddrtr1 = 0x201003CF, + .dmc_ddrtr2 = 0x00320107, + .dmc_ddrmr = 0x00000422, + .dmc_ddrmr1 = 0x4, + }, + [1] = { + .ddr_clk = 133, + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20806313, + .dmc_ddrtr1 = 0x2013040D, + .dmc_ddrtr2 = 0x00320108, + .dmc_ddrmr = 0x00000632, + .dmc_ddrmr1 = 0x4, + }, + [2] = { + .ddr_clk = 150, + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20A07323, + .dmc_ddrtr1 = 0x20160492, + .dmc_ddrtr2 = 0x00320209, + .dmc_ddrmr = 0x00000632, + .dmc_ddrmr1 = 0x4, + }, + [3] = { + .ddr_clk = 166, + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20A07323, + .dmc_ddrtr1 = 0x2016050E, + .dmc_ddrtr2 = 0x00320209, + .dmc_ddrmr = 0x00000632, + .dmc_ddrmr1 = 0x4, + }, + [4] = { + .ddr_clk = 200, + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20a07323, + .dmc_ddrtr1 = 0x2016050f, + .dmc_ddrtr2 = 0x00320509, + .dmc_ddrmr = 0x00000632, + .dmc_ddrmr1 = 0x4, + }, + [5] = { + .ddr_clk = 225, + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20E0A424, + .dmc_ddrtr1 = 0x302006DB, + .dmc_ddrtr2 = 0x0032020D, + .dmc_ddrmr = 0x00000842, + .dmc_ddrmr1 = 0x4, + }, + [6] = { + .ddr_clk = 250, + .dmc_ddrctl = 0x00000904, + .dmc_ddrcfg = 0x00000422, + .dmc_ddrtr0 = 0x20E0A424, + .dmc_ddrtr1 = 0x3020079E, + .dmc_ddrtr2 = 0x0032020D, + .dmc_ddrmr = 0x00000842, + .dmc_ddrmr1 = 0x4, + }, +}; +#else #define SDGCTL_WIDTH (1 << 31) /* SDRAM external data path width */ #define PLL_CTL_VAL \ (((CONFIG_VCO_MULT & 63) << 9) | CLKIN_HALF | \ - (PLL_BYPASS << 8) | (ANOMALY_05000305 ? 0 : 0x8000)) + (PLL_BYPASS << 8) | (ANOMALY_05000305 ? 0 : 0x8000)) +#endif __attribute__((l1_text)) static void do_sync(void) @@ -33,6 +144,44 @@ void init_clocks(void) * in the middle of reprogramming things, and that'll screw us up. * For example, any automatic DMAs left by U-Boot for splash screens. */ + +#ifdef CONFIG_BF60x + int i, dlldatacycle, dll_ctl; + bfin_write32(CGU0_DIV, CGU_DIV_VAL); + bfin_write32(CGU0_CTL, CGU_CTL_VAL); + while ((bfin_read32(CGU0_STAT) & 0x8) || !(bfin_read32(CGU0_STAT) & 0x4)) + continue; + + bfin_write32(CGU0_DIV, CGU_DIV_VAL | (1 << UPDT_P)); + while (bfin_read32(CGU0_STAT) & (1 << 3)) + continue; + + for (i = 0; i < 7; i++) { + if (ddr_config_table[i].ddr_clk == CONFIG_BFIN_DCLK) { + bfin_write_DDR0_CFG(ddr_config_table[i].dmc_ddrcfg); + bfin_write_DDR0_TR0(ddr_config_table[i].dmc_ddrtr0); + bfin_write_DDR0_TR1(ddr_config_table[i].dmc_ddrtr1); + bfin_write_DDR0_TR2(ddr_config_table[i].dmc_ddrtr2); + bfin_write_DDR0_MR(ddr_config_table[i].dmc_ddrmr); + bfin_write_DDR0_EMR1(ddr_config_table[i].dmc_ddrmr1); + bfin_write_DDR0_CTL(ddr_config_table[i].dmc_ddrctl); + break; + } + } + + do_sync(); + while (!(bfin_read_DDR0_STAT() & 0x4)) + continue; + + dlldatacycle = (bfin_read_DDR0_STAT() & 0x00f00000) >> 20; + dll_ctl = bfin_read_DDR0_DLLCTL(); + dll_ctl &= 0x0ff; + bfin_write_DDR0_DLLCTL(dll_ctl | (dlldatacycle << 8)); + + do_sync(); + while (!(bfin_read_DDR0_STAT() & 0x2000)) + continue; +#else size_t i; for (i = 0; i < MAX_DMA_CHANNELS; ++i) { struct dma_register *dma = dma_io_base_addr[i]; @@ -91,6 +240,8 @@ void init_clocks(void) bfin_write_EBIU_DDRQUE(CONFIG_MEM_EBIU_DDRQUE); #endif #endif +#endif do_sync(); bfin_read16(0); + } |