From 74109de3c2ff8beb9d0a311f1a0b26a715050c06 Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Tue, 16 Jul 2019 17:27:21 +0530 Subject: [PATCH] ram: rk3399: Add IO settings Add IO settings for dram ctl and phy. IO settings are useful for configuring ctl, phy odt, vref, mr5, mode select and other needed input output operations for lpddr4 or any other dramtype sdram. Right now, this patch added IO setting for all supported sdram frequencies. Signed-off-by: Jagan Teki Signed-off-by: YouMin Chen Reviewed-by: Kever Yang --- drivers/ram/rockchip/sdram_rk3399.c | 104 ++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index 781d1170a0..9121d5b779 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -80,6 +80,110 @@ struct rockchip_dmc_plat { struct regmap *map; }; +struct io_setting { + u32 mhz; + u32 mr5; + /* dram side */ + u32 dq_odt; + u32 ca_odt; + u32 pdds; + u32 dq_vref; + u32 ca_vref; + /* phy side */ + u32 rd_odt; + u32 wr_dq_drv; + u32 wr_ca_drv; + u32 wr_ckcs_drv; + u32 rd_odt_en; + u32 rd_vref; +} lpddr4_io_setting[] = { + { + 50 * MHz, + 0, + /* dram side */ + 0, /* dq_odt; */ + 0, /* ca_odt; */ + 6, /* pdds; */ + 0x72, /* dq_vref; */ + 0x72, /* ca_vref; */ + /* phy side */ + PHY_DRV_ODT_HI_Z, /* rd_odt; */ + PHY_DRV_ODT_40, /* wr_dq_drv; */ + PHY_DRV_ODT_40, /* wr_ca_drv; */ + PHY_DRV_ODT_40, /* wr_ckcs_drv; */ + 0, /* rd_odt_en;*/ + 41, /* rd_vref; (unit %, range 3.3% - 48.7%) */ + }, + { + 600 * MHz, + 0, + /* dram side */ + 1, /* dq_odt; */ + 0, /* ca_odt; */ + 6, /* pdds; */ + 0x72, /* dq_vref; */ + 0x72, /* ca_vref; */ + /* phy side */ + PHY_DRV_ODT_HI_Z, /* rd_odt; */ + PHY_DRV_ODT_48, /* wr_dq_drv; */ + PHY_DRV_ODT_40, /* wr_ca_drv; */ + PHY_DRV_ODT_40, /* wr_ckcs_drv; */ + 0, /* rd_odt_en; */ + 32, /* rd_vref; (unit %, range 3.3% - 48.7%) */ + }, + { + 800 * MHz, + 0, + /* dram side */ + 1, /* dq_odt; */ + 0, /* ca_odt; */ + 1, /* pdds; */ + 0x72, /* dq_vref; */ + 0x72, /* ca_vref; */ + /* phy side */ + PHY_DRV_ODT_40, /* rd_odt; */ + PHY_DRV_ODT_48, /* wr_dq_drv; */ + PHY_DRV_ODT_40, /* wr_ca_drv; */ + PHY_DRV_ODT_40, /* wr_ckcs_drv; */ + 1, /* rd_odt_en; */ + 17, /* rd_vref; (unit %, range 3.3% - 48.7%) */ + }, + { + 933 * MHz, + 0, + /* dram side */ + 3, /* dq_odt; */ + 0, /* ca_odt; */ + 6, /* pdds; */ + 0x59, /* dq_vref; 32% */ + 0x72, /* ca_vref; */ + /* phy side */ + PHY_DRV_ODT_HI_Z, /* rd_odt; */ + PHY_DRV_ODT_48, /* wr_dq_drv; */ + PHY_DRV_ODT_40, /* wr_ca_drv; */ + PHY_DRV_ODT_40, /* wr_ckcs_drv; */ + 0, /* rd_odt_en; */ + 32, /* rd_vref; (unit %, range 3.3% - 48.7%) */ + }, + { + 1066 * MHz, + 0, + /* dram side */ + 6, /* dq_odt; */ + 0, /* ca_odt; */ + 1, /* pdds; */ + 0x10, /* dq_vref; */ + 0x72, /* ca_vref; */ + /* phy side */ + PHY_DRV_ODT_40, /* rd_odt; */ + PHY_DRV_ODT_60, /* wr_dq_drv; */ + PHY_DRV_ODT_40, /* wr_ca_drv; */ + PHY_DRV_ODT_40, /* wr_ckcs_drv; */ + 1, /* rd_odt_en; */ + 17, /* rd_vref; (unit %, range 3.3% - 48.7%) */ + }, +}; + static void *get_ddrc0_con(struct dram_info *dram, u8 channel) { return (channel == 0) ? &dram->grf->ddrc0_con0 : &dram->grf->ddrc0_con1; -- 2.39.5