From 6c36d151a81dbfa1f1e2a5d47dd87f2e53534bc7 Mon Sep 17 00:00:00 2001 From: Huayang Duan Date: Wed, 26 Sep 2018 15:37:58 +0800 Subject: mediatek/mt8183: Add DDR driver of software impedance part BUG=b:80501386 BRANCH=none TEST=Boots correctly on Kukui, and inits DRAM successfully with related patches. Change-Id: I42a33ffb66ffa2f938f85484ffc3a0d3788816b3 Signed-off-by: Huayang Duan Reviewed-on: https://review.coreboot.org/28837 Tested-by: build bot (Jenkins) Reviewed-by: Hung-Te Lin --- src/soc/mediatek/mt8183/include/soc/dramc_pi_api.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'src/soc/mediatek/mt8183/include') diff --git a/src/soc/mediatek/mt8183/include/soc/dramc_pi_api.h b/src/soc/mediatek/mt8183/include/soc/dramc_pi_api.h index ecdff82bc8..e4300891ec 100644 --- a/src/soc/mediatek/mt8183/include/soc/dramc_pi_api.h +++ b/src/soc/mediatek/mt8183/include/soc/dramc_pi_api.h @@ -39,6 +39,11 @@ #define DRAMC_BROADCAST_OFF 0x0 #define MAX_BACKUP_REG_CNT 32 +#define IMP_LP4X_TERM_VREF_SEL 0x1b +#define IMP_DRVP_LP4X_UNTERM_VREF_SEL 0x1a +#define IMP_DRVN_LP4X_UNTERM_VREF_SEL 0x16 +#define IMP_TRACK_LP4X_UNTERM_VREF_SEL 0x1a + enum dram_te_op { TE_OP_WRITE_READ_CHECK = 0, TE_OP_READ_CHECK @@ -133,4 +138,5 @@ void dramc_get_rank_size(u64 *dram_rank_size); void dramc_set_broadcast(u32 onoff); u32 dramc_get_broadcast(void); void dramc_init(void); +void dramc_sw_impedance(const struct sdram_params *params); #endif /* _DRAMC_PI_API_MT8183_H */ -- cgit v1.2.3