[PATCH 64/92] ram: rk3399: Configure BOOSTP_EN, BOOSTN_EN for lpddr4

Jagan Teki
2019-06-11T14:51:07Z

Configure BOOSTP_EN, BOOSTN_EN for lpddr4 during phy IO config.

Signed-off-by: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
Signed-off-by: YouMin Chen <cym-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---
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 7d2359740c..4328790a4f 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)) | \
@@ -313,6 +316,27 @@ 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 (sdram_params->base.dramtype == 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 (sdram_params->base.ddr_freq < 400)
speed = 0x0;
--
2.18.0.321.gffc6fa0e3