ARM: imx: ddr: Add deskew register programming

Fill is code for programming the DDR_PHY_CMD_DESKEW_CONx registers,
which are optional, but can be used to fill in the byte lane delays.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP i.MX U-Boot Team <uboot-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>

diff --git a/arch/arm/include/asm/arch-mx7/mx7-ddr.h b/arch/arm/include/asm/arch-mx7/mx7-ddr.h
index bea5dd8..8ac7211 100644 (file)
--- a/arch/arm/include/asm/arch-mx7/mx7-ddr.h
+++ b/arch/arm/include/asm/arch-mx7/mx7-ddr.h
@@ -136,11 +136,21 @@ struct ddr_phy {
        u32 offset_wr_con0;     /* 0x0030 */
        u32 reserved5[0x07];
        u32 cmd_sdll_con0;      /* 0x0050 */
-       u32 reserved6[0x12];
+       u32 reserved6[0x06];
+       u32 cmd_lvl_con0;       /* 0x006c */
+       u32 reserved7[0x02];
+       u32 cmd_lvl_con3;       /* 0x0078 */
+       u32 cmd_deskew_con0;    /* 0x007c */
+       u32 cmd_deskew_con1;    /* 0x0080 */
+       u32 cmd_deskew_con2;    /* 0x0084 */
+       u32 cmd_deskew_con3;    /* 0x0088 */
+       u32 reserved8[0x02];
+       u32 cmd_deskew_con4;    /* 0x0094 */
+       u32 reserved9;
        u32 drvds_con0;         /* 0x009c */
-       u32 reserved7[0x04];
+       u32 reserved10[0x04];
        u32 mdll_con0;          /* 0x00b0 */
-       u32 reserved8[0x03];
+       u32 reserved11[0x03];
        u32 zq_con0;            /* 0x00c0 */
 };
 

diff --git a/arch/arm/mach-imx/mx7/ddr.c b/arch/arm/mach-imx/mx7/ddr.c
index 45954ed..cf25569 100644 (file)
--- a/arch/arm/mach-imx/mx7/ddr.c
+++ b/arch/arm/mach-imx/mx7/ddr.c
@@ -106,6 +106,15 @@ void mx7_dram_cfg(struct ddrc *ddrc_regs_val, struct ddrc_mp *ddrc_mp_val,
               ~DDR_PHY_CMD_SDLL_CON0_CTRL_RESYNC_MASK,
               &ddr_phy_regs->cmd_sdll_con0);
        writel(ddr_phy_regs_val->offset_lp_con0, &ddr_phy_regs->offset_lp_con0);
+       writel(ddr_phy_regs_val->cmd_deskew_con0,
+              &ddr_phy_regs->cmd_deskew_con0);
+       writel(ddr_phy_regs_val->cmd_deskew_con1,
+              &ddr_phy_regs->cmd_deskew_con1);
+       writel(ddr_phy_regs_val->cmd_deskew_con2,
+              &ddr_phy_regs->cmd_deskew_con2);
+       writel(ddr_phy_regs_val->cmd_deskew_con3,
+              &ddr_phy_regs->cmd_deskew_con3);
+       writel(ddr_phy_regs_val->cmd_lvl_con0, &ddr_phy_regs->cmd_lvl_con0);
 
        /* calibration */
        for (i = 0; i < calib_param->num_val; i++)