diff options
| author | Jagan Teki <jagan@amarulasolutions.com> | 2019-07-16 17:27:16 +0530 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2019-07-20 23:59:44 +0800 |
| commit | f9f32d61a6d5268b0b5358005b0a0725f0d50529 (patch) | |
| tree | 7cdf76f1661046e992fe47f905c07e2ceb197a9d /drivers/ram | |
| parent | 881860fd34bea88929a5849f7550d70b0a9d6099 (diff) | |
| download | u-boot-f9f32d61a6d5268b0b5358005b0a0725f0d50529.tar.gz | |
ram: rk3399: Configure SLEWP_EN, SLEWN_EN for lpddr4
Configure SLEWP_EN, SLEWN_EN for lpddr4 during phy IO config.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Diffstat (limited to 'drivers/ram')
| -rw-r--r-- | drivers/ram/rockchip/sdram_rk3399.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index 0c8a7f81cc..d684722444 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -37,6 +37,8 @@ #define PHY_BOOSTP_EN 0x1 #define PHY_BOOSTN_EN 0x1 +#define PHY_SLEWP_EN 0x1 +#define PHY_SLEWN_EN 0x1 #define CRU_SFTRST_DDR_CTRL(ch, n) ((0x1 << (8 + 16 + (ch) * 4)) | \ ((n) << (8 + (ch) * 4))) @@ -334,6 +336,25 @@ static int phy_io_config(const struct chan_info *chan, clrsetbits_le32(&denali_phy[937], 0xff << 20, reg_value << 20); /* PHY_939 PHY_PAD_CS_DRIVE */ clrsetbits_le32(&denali_phy[939], 0xff << 20, reg_value << 20); + + /* SLEWP_EN & SLEWN_EN */ + reg_value = ((PHY_SLEWP_EN << 3) | PHY_SLEWN_EN); + /* PHY_924 PHY_PAD_FDBK_DRIVE */ + clrsetbits_le32(&denali_phy[924], 0x3f << 8, reg_value << 8); + /* PHY_926 PHY_PAD_DATA_DRIVE */ + clrsetbits_le32(&denali_phy[926], 0x3f, reg_value); + /* PHY_927 PHY_PAD_DQS_DRIVE */ + clrsetbits_le32(&denali_phy[927], 0x3f, reg_value); + /* PHY_928 PHY_PAD_ADDR_DRIVE */ + clrsetbits_le32(&denali_phy[928], 0x3f << 8, reg_value << 8); + /* PHY_929 PHY_PAD_CLK_DRIVE */ + clrsetbits_le32(&denali_phy[929], 0x3f << 8, reg_value << 8); + /* PHY_935 PHY_PAD_CKE_DRIVE */ + clrsetbits_le32(&denali_phy[935], 0x3f << 8, reg_value << 8); + /* PHY_937 PHY_PAD_RST_DRIVE */ + clrsetbits_le32(&denali_phy[937], 0x3f << 8, reg_value << 8); + /* PHY_939 PHY_PAD_CS_DRIVE */ + clrsetbits_le32(&denali_phy[939], 0x3f << 8, reg_value << 8); } /* speed setting */ |