[PATCH] ARM: imx: ddr: Add deskew register programming

[PATCH] ARM: imx: ddr: Add deskew register programming

[Marek Vasut]

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>
---
 arch/arm/include/asm/arch-mx7/mx7-ddr.h | 16 +++++++++++++---
 arch/arm/mach-imx/mx7/ddr.c             |  9 +++++++++
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/arch/arm/include/asm/arch-mx7/mx7-ddr.h b/arch/arm/include/asm/arch-mx7/mx7-ddr.h
index bea5dd8ec5..8ac721114c 100644
--- 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 45954ed1ed..cf25569765 100644
--- 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++)
-- 
2.27.0

[PATCH] ARM: imx: ddr: Add deskew register programming

[sbabic at denx.de]

> 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>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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