diff options
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/emif-common.c')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/emif-common.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c index 88253cf8ce..8864abc16e 100644 --- a/arch/arm/cpu/armv7/omap-common/emif-common.c +++ b/arch/arm/cpu/armv7/omap-common/emif-common.c @@ -66,6 +66,19 @@ inline u32 emif_num(u32 base) return 0; } +/* + * Get SDRAM type connected to EMIF. + * Assuming similar SDRAM parts are connected to both EMIF's + * which is typically the case. So it is sufficient to get + * SDRAM type from EMIF1. + */ +u32 emif_sdram_type() +{ + struct emif_reg_struct *emif = (struct emif_reg_struct *)EMIF1_BASE; + + return (readl(&emif->emif_sdram_config) & + EMIF_REG_SDRAM_TYPE_MASK) >> EMIF_REG_SDRAM_TYPE_SHIFT; +} static inline u32 get_mr(u32 base, u32 cs, u32 mr_addr) { @@ -1079,7 +1092,7 @@ static void do_sdram_init(u32 base) * OPP to another) */ if (!(in_sdram || warm_reset())) { - if (omap_revision() != OMAP5432_ES1_0) + if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2) lpddr2_init(base, regs); else ddr3_init(base, regs); @@ -1264,7 +1277,7 @@ void dmm_init(u32 base) void sdram_init(void) { u32 in_sdram, size_prog, size_detect; - u32 omap_rev = omap_revision(); + u32 sdram_type = emif_sdram_type(); debug(">>sdram_init()\n"); @@ -1275,7 +1288,7 @@ void sdram_init(void) debug("in_sdram = %d\n", in_sdram); if (!(in_sdram || warm_reset())) { - if (omap_rev != OMAP5432_ES1_0) + if (sdram_type == EMIF_SDRAM_TYPE_LPDDR2) bypass_dpll(&prcm->cm_clkmode_dpll_core); else writel(CM_DLL_CTRL_NO_OVERRIDE, &prcm->cm_dll_ctrl); @@ -1298,7 +1311,7 @@ void sdram_init(void) } /* for the shadow registers to take effect */ - if (omap_rev != OMAP5432_ES1_0) + if (sdram_type == EMIF_SDRAM_TYPE_LPDDR2) freq_update_core(); /* Do some testing after the init */ |