diff options
Diffstat (limited to 'arch/blackfin/mach-common/clocks-init.c')
-rw-r--r-- | arch/blackfin/mach-common/clocks-init.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/arch/blackfin/mach-common/clocks-init.c b/arch/blackfin/mach-common/clocks-init.c deleted file mode 100644 index d436bd907fc8..000000000000 --- a/arch/blackfin/mach-common/clocks-init.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * arch/blackfin/mach-common/clocks-init.c - reprogram clocks / memory - * - * Copyright 2004-2008 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#include <linux/linkage.h> -#include <asm/blackfin.h> - -#include <asm/dma.h> -#include <asm/clocks.h> -#include <asm/mem_init.h> -#include <asm/dpmc.h> - -#ifdef CONFIG_BF60x - -#define CGU_CTL_VAL ((CONFIG_VCO_MULT << 8) | CLKIN_HALF) -#define CGU_DIV_VAL \ - ((CONFIG_CCLK_DIV << CSEL_OFFSET) | \ - (CONFIG_SCLK_DIV << SYSSEL_OFFSET) | \ - (CONFIG_SCLK0_DIV << S0SEL_OFFSET) | \ - (CONFIG_SCLK1_DIV << S1SEL_OFFSET) | \ - (CONFIG_DCLK_DIV << DSEL_OFFSET)) - -#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 - -#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)) -#endif - -__attribute__((l1_text)) -static void do_sync(void) -{ - __builtin_bfin_ssync(); -} - -__attribute__((l1_text)) -void init_clocks(void) -{ - /* Kill any active DMAs as they may trigger external memory accesses - * 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 - init_cgu(CGU_DIV_VAL, CGU_CTL_VAL); - init_dmc(CONFIG_BFIN_DCLK); -#else - size_t i; - for (i = 0; i < MAX_DMA_CHANNELS; ++i) { - struct dma_register *dma = dma_io_base_addr[i]; - dma->cfg = 0; - } - - do_sync(); - -#ifdef SIC_IWR0 - bfin_write_SIC_IWR0(IWR_ENABLE(0)); -# ifdef SIC_IWR1 - /* BF52x system reset does not properly reset SIC_IWR1 which - * will screw up the bootrom as it relies on MDMA0/1 waking it - * up from IDLE instructions. See this report for more info: - * http://blackfin.uclinux.org/gf/tracker/4323 - */ - if (ANOMALY_05000435) - bfin_write_SIC_IWR1(IWR_ENABLE(10) | IWR_ENABLE(11)); - else - bfin_write_SIC_IWR1(IWR_DISABLE_ALL); -# endif -# ifdef SIC_IWR2 - bfin_write_SIC_IWR2(IWR_DISABLE_ALL); -# endif -#else - bfin_write_SIC_IWR(IWR_ENABLE(0)); -#endif - do_sync(); -#ifdef EBIU_SDGCTL - bfin_write_EBIU_SDGCTL(bfin_read_EBIU_SDGCTL() | SRFS); - do_sync(); -#endif - -#ifdef CLKBUFOE - bfin_write16(VR_CTL, bfin_read_VR_CTL() | CLKBUFOE); - do_sync(); - __asm__ __volatile__("IDLE;"); -#endif - bfin_write_PLL_LOCKCNT(0x300); - do_sync(); - /* We always write PLL_CTL thus avoiding Anomaly 05000242 */ - bfin_write16(PLL_CTL, PLL_CTL_VAL); - __asm__ __volatile__("IDLE;"); - bfin_write_PLL_DIV(CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV); -#ifdef EBIU_SDGCTL - bfin_write_EBIU_SDRRC(mem_SDRRC); - bfin_write_EBIU_SDGCTL((bfin_read_EBIU_SDGCTL() & SDGCTL_WIDTH) | mem_SDGCTL); -#else - bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() & ~(SRREQ)); - do_sync(); - bfin_write_EBIU_RSTCTL(bfin_read_EBIU_RSTCTL() | 0x1); - bfin_write_EBIU_DDRCTL0(mem_DDRCTL0); - bfin_write_EBIU_DDRCTL1(mem_DDRCTL1); - bfin_write_EBIU_DDRCTL2(mem_DDRCTL2); -#ifdef CONFIG_MEM_EBIU_DDRQUE - bfin_write_EBIU_DDRQUE(CONFIG_MEM_EBIU_DDRQUE); -#endif -#endif -#endif - do_sync(); - bfin_read16(0); - -} |