---

yaml --- r: 153753 b: refs/heads/master c: 7b7bcef h: refs/heads/master i: 153751: a79bd8f v: v3
git-mirror · Jun 20, 2009 · 1daf1a3 · 1daf1a3
1 parent dea76e2
commit 1daf1a3
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3afec6332e1e7cf2d74e0bf08160a68f43a59073
+refs/heads/master: 7b7bcefa35d62fec64c3615a6bef7866f34c7cc9
diff --git a/trunk/arch/arm/mach-omap2/sram34xx.S b/trunk/arch/arm/mach-omap2/sram34xx.S
@@ -41,8 +41,18 @@
 #define SDRC_UNLOCK_DLL			0x1
 
 /* SDRC_DLLA_CTRL bit settings */
+#define FIXEDDELAY_SHIFT		24
+#define FIXEDDELAY_MASK			(0xff << FIXEDDELAY_SHIFT)
 #define DLLIDLE_MASK			0x4
 
+/*
+ * SDRC_DLLA_CTRL default values: TI hardware team indicates that
+ * FIXEDDELAY should be initialized to 0xf.  This apparently was
+ * empirically determined during process testing, so no derivation
+ * was provided.
+ */
+#define FIXEDDELAY_DEFAULT		(0x0f << FIXEDDELAY_SHIFT)
+
 /* SDRC_DLLA_STATUS bit settings */
 #define LOCKSTATUS_MASK			0x4
 
@@ -103,6 +113,8 @@ return_to_sdram:
 unlock_dll:
 	ldr	r11, omap3_sdrc_dlla_ctrl
 	ldr	r12, [r11]
+	and	r12, r12, #FIXEDDELAY_MASK
+	orr	r12, r12, #FIXEDDELAY_DEFAULT
 	orr	r12, r12, #DLLIDLE_MASK
 	str	r12, [r11]		@ (no OCP barrier needed)
 	bx	lr