ram: rk3399: Configure BOOSTP_EN, BOOSTN_EN for lpddr4

Configure BOOSTP_EN, BOOSTN_EN for lpddr4 during phy IO config.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index aaf786a..0c8a7f8 100644 (file)
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -35,6 +35,9 @@
 #define PHY_DRV_ODT_40         0xe
 #define PHY_DRV_ODT_34_3       0xf
 
+#define PHY_BOOSTP_EN          0x1
+#define PHY_BOOSTN_EN          0x1
+
 #define CRU_SFTRST_DDR_CTRL(ch, n)     ((0x1 << (8 + 16 + (ch) * 4)) | \
                                        ((n) << (8 + (ch) * 4)))
 #define CRU_SFTRST_DDR_PHY(ch, n)      ((0x1 << (9 + 16 + (ch) * 4)) | \
@@ -312,6 +315,27 @@ static int phy_io_config(const struct chan_info *chan,
        /* PHY_939 PHY_PAD_CS_DRIVE */
        clrsetbits_le32(&denali_phy[939], 0x7 << 14, mode_sel << 14);
 
+       if (IS_ENABLED(CONFIG_RAM_RK3399_LPDDR4)) {
+               /* BOOSTP_EN & BOOSTN_EN */
+               reg_value = ((PHY_BOOSTP_EN << 4) | PHY_BOOSTN_EN);
+               /* PHY_925 PHY_PAD_FDBK_DRIVE2 */
+               clrsetbits_le32(&denali_phy[925], 0xff << 8, reg_value << 8);
+               /* PHY_926 PHY_PAD_DATA_DRIVE */
+               clrsetbits_le32(&denali_phy[926], 0xff << 12, reg_value << 12);
+               /* PHY_927 PHY_PAD_DQS_DRIVE */
+               clrsetbits_le32(&denali_phy[927], 0xff << 14, reg_value << 14);
+               /* PHY_928 PHY_PAD_ADDR_DRIVE */
+               clrsetbits_le32(&denali_phy[928], 0xff << 20, reg_value << 20);
+               /* PHY_929 PHY_PAD_CLK_DRIVE */
+               clrsetbits_le32(&denali_phy[929], 0xff << 22, reg_value << 22);
+               /* PHY_935 PHY_PAD_CKE_DRIVE */
+               clrsetbits_le32(&denali_phy[935], 0xff << 20, reg_value << 20);
+               /* PHY_937 PHY_PAD_RST_DRIVE */
+               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);
+       }
+
        /* speed setting */
        if (params->base.ddr_freq < 400)
                speed = 0x0;