From: Dave Liu <daveliu@freescale.com>
Date: Fri, 21 Nov 2008 08:31:22 +0000 (+0800)
Subject: fsl-ddr: update the bit mask for DDR3 controller
X-Git-Tag: v2009.03-rc1~172^2~8
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=80ee3ce6d7fe9441b4352d7cfaf6afc2507b1106;p=oweals%2Fu-boot.git

fsl-ddr: update the bit mask for DDR3 controller

According to the latest 8572 UM, the DDR3 controller
is expanding the bit mask, and we use the extend ACTTOPRE
mode when tRAS more than 19 MCLK.

Signed-off-by: Dave Liu <daveliu@freescale.com>
---

diff --git a/cpu/mpc8xxx/ddr/ctrl_regs.c b/cpu/mpc8xxx/ddr/ctrl_regs.c
index 1783e927a5..d5cdc362f2 100644
--- a/cpu/mpc8xxx/ddr/ctrl_regs.c
+++ b/cpu/mpc8xxx/ddr/ctrl_regs.c
@@ -185,10 +185,14 @@ static void set_timing_cfg_3(fsl_ddr_cfg_regs_t *ddr,
 	unsigned int ext_caslat = 0; /* Extended MCAS latency from READ cmd */
 	unsigned int cntl_adj = 0; /* Control Adjust */
 
+	/* If the tRAS > 19 MCLK, we use the ext mode */
+	if (picos_to_mclk(common_dimm->tRAS_ps) > 0x13)
+		ext_acttopre = 1;
+
 	ext_refrec = (picos_to_mclk(common_dimm->tRFC_ps) - 8) >> 4;
 	ddr->timing_cfg_3 = (0
 		| ((ext_acttopre & 0x1) << 24)
-		| ((ext_refrec & 0x7) << 16)
+		| ((ext_refrec & 0xF) << 16)
 		| ((ext_caslat & 0x1) << 12)
 		| ((cntl_adj & 0x7) << 0)
 		);
@@ -251,12 +255,12 @@ static void set_timing_cfg_1(fsl_ddr_cfg_regs_t *ddr,
 	wrtord_mclk = picos_to_mclk(common_dimm->tWTR_ps);
 
 	ddr->timing_cfg_1 = (0
-		| ((pretoact_mclk & 0x07) << 28)
+		| ((pretoact_mclk & 0x0F) << 28)
 		| ((acttopre_mclk & 0x0F) << 24)
-		| ((acttorw_mclk & 0x7) << 20)
+		| ((acttorw_mclk & 0xF) << 20)
 		| ((caslat_ctrl & 0xF) << 16)
 		| ((refrec_ctrl & 0xF) << 12)
-		| ((wrrec_mclk & 0x07) << 8)
+		| ((wrrec_mclk & 0x0F) << 8)
 		| ((acttoact_mclk & 0x07) << 4)
 		| ((wrtord_mclk & 0x07) << 0)
 		);