From d3d0099ca6661af0ae3cab1402fbe87121b645a5 Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Tue, 16 Jul 2019 17:27:17 +0530 Subject: [PATCH] ram: rk3399: Configure PHY RX_CM_INPUT for lpddr4 Configure PHY RX_CM_INPUT for lpddr4 during phy IO config. Signed-off-by: Jagan Teki Signed-off-by: YouMin Chen Reviewed-by: Kever Yang --- drivers/ram/rockchip/sdram_rk3399.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index d684722444..e5265128ae 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -39,6 +39,7 @@ #define PHY_BOOSTN_EN 0x1 #define PHY_SLEWP_EN 0x1 #define PHY_SLEWN_EN 0x1 +#define PHY_RX_CM_INPUT 0x1 #define CRU_SFTRST_DDR_CTRL(ch, n) ((0x1 << (8 + 16 + (ch) * 4)) | \ ((n) << (8 + (ch) * 4))) @@ -384,6 +385,27 @@ static int phy_io_config(const struct chan_info *chan, /* PHY_939 PHY_PAD_CS_DRIVE */ clrsetbits_le32(&denali_phy[939], 0x3 << 17, speed << 17); + if (IS_ENABLED(CONFIG_RAM_RK3399_LPDDR4)) { + /* RX_CM_INPUT */ + reg_value = PHY_RX_CM_INPUT; + /* PHY_924 PHY_PAD_FDBK_DRIVE */ + clrsetbits_le32(&denali_phy[924], 0x1 << 14, reg_value << 14); + /* PHY_926 PHY_PAD_DATA_DRIVE */ + clrsetbits_le32(&denali_phy[926], 0x1 << 11, reg_value << 11); + /* PHY_927 PHY_PAD_DQS_DRIVE */ + clrsetbits_le32(&denali_phy[927], 0x1 << 13, reg_value << 13); + /* PHY_928 PHY_PAD_ADDR_DRIVE */ + clrsetbits_le32(&denali_phy[928], 0x1 << 19, reg_value << 19); + /* PHY_929 PHY_PAD_CLK_DRIVE */ + clrsetbits_le32(&denali_phy[929], 0x1 << 21, reg_value << 21); + /* PHY_935 PHY_PAD_CKE_DRIVE */ + clrsetbits_le32(&denali_phy[935], 0x1 << 19, reg_value << 19); + /* PHY_937 PHY_PAD_RST_DRIVE */ + clrsetbits_le32(&denali_phy[937], 0x1 << 19, reg_value << 19); + /* PHY_939 PHY_PAD_CS_DRIVE */ + clrsetbits_le32(&denali_phy[939], 0x1 << 19, reg_value << 19); + } + return 0; } -- 2.39.5