[U-Boot] [PATCH v3 27/57] ram: rk3399: Configure BOOSTP_EN, BOOSTN_EN for lpddr4

Jagan Teki
2019-07-16T11:57:15Z

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>
---
drivers/ram/rockchip/sdram_rk3399.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index 7625506458..a9e092c39f 100644
--- 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;
--
2.18.0.321.gffc6fa0e3