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ram: rk3399: Configure SLEWP_EN, SLEWN_EN for lpddr4

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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>
This commit is contained in:
Jagan Teki 2019-07-16 17:27:16 +05:30 • committed by Kever Yang
parent 881860fd34
commit f9f32d61a6
1 changed files with 21 additions and 0 deletions
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21
drivers/ram/rockchip/sdram_rk3399.c
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@ -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 */