diff options
Diffstat (limited to 'src/soc/mediatek/mt8173/emi.c')
| -rw-r--r-- | src/soc/mediatek/mt8173/emi.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8173/emi.c b/src/soc/mediatek/mt8173/emi.c index 1ff4f23f10..9c89134932 100644 --- a/src/soc/mediatek/mt8173/emi.c +++ b/src/soc/mediatek/mt8173/emi.c @@ -25,6 +25,8 @@ #include <soc/dramc_pi_api.h> #include <soc/mt6391.h> #include <soc/pll.h> +#include <soc/infracfg.h> +#include <soc/pericfg.h> struct emi_regs *emi_regs = (void *)EMI_BASE; @@ -163,6 +165,17 @@ size_t sdram_size(void) return ((size_t)1 << (bit_counter - 3)); } +static void init_4GB_mode(void) +{ + if (sdram_size() == (size_t)4 * GiB) { + setbits_le32(&mt8173_pericfg->axi_bus_ctl3, PERISYS_4G_SUPPORT); + setbits_le32(&mt8173_infracfg->infra_misc, DDR_4GB_SUPPORT_EN); + } else { + clrbits_le32(&mt8173_pericfg->axi_bus_ctl3, PERISYS_4G_SUPPORT); + clrbits_le32(&mt8173_infracfg->infra_misc, DDR_4GB_SUPPORT_EN); + } +} + void mt_set_emi(const struct mt8173_sdram_params *sdram_params) { /* voltage info */ @@ -175,4 +188,5 @@ void mt_set_emi(const struct mt8173_sdram_params *sdram_params) init_dram(sdram_params); do_calib(sdram_params); + init_4GB_mode(); } |