From: Lokesh Vutla <lokeshvutla@ti.com>
Date: Tue, 22 May 2012 00:03:26 +0000 (+0000)
Subject: OMAP5: DPLL core lock for OMAP5432
X-Git-Tag: v2012.07-rc1~11^2~157
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=753bae8c5dd4ba92a39b06ea9a551be962053f93;p=oweals%2Fu-boot.git

OMAP5: DPLL core lock for OMAP5432

No need to Unlock DPLL initially.
DDR3 can work at normal OPP from initialozation

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
---

diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c
index 10d286a6d4..b1fd277d6d 100644
--- a/arch/arm/cpu/armv7/omap-common/clocks-common.c
+++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c
@@ -299,8 +299,12 @@ static void setup_dplls(void)
 	 * Core DPLL will be locked after setting up EMIF
 	 * using the FREQ_UPDATE method(freq_update_core())
 	 */
-	do_setup_dpll(&prcm->cm_clkmode_dpll_core, params, DPLL_NO_LOCK,
-								"core");
+	if (omap_revision() != OMAP5432_ES1_0)
+		do_setup_dpll(&prcm->cm_clkmode_dpll_core, params,
+							DPLL_NO_LOCK, "core");
+	else
+		do_setup_dpll(&prcm->cm_clkmode_dpll_core, params,
+							DPLL_LOCK, "core");
 	/* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */
 	temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) |
 	    (CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) |
diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c
index 846511d03b..23cf6199eb 100644
--- a/arch/arm/cpu/armv7/omap-common/emif-common.c
+++ b/arch/arm/cpu/armv7/omap-common/emif-common.c
@@ -1232,6 +1232,7 @@ void dmm_init(u32 base)
 void sdram_init(void)
 {
 	u32 in_sdram, size_prog, size_detect;
+	u32 omap_rev = omap_revision();
 
 	debug(">>sdram_init()\n");
 
@@ -1241,9 +1242,12 @@ void sdram_init(void)
 	in_sdram = running_from_sdram();
 	debug("in_sdram = %d\n", in_sdram);
 
-	if (!in_sdram)
-		bypass_dpll(&prcm->cm_clkmode_dpll_core);
-
+	if (!in_sdram) {
+		if (omap_rev != OMAP5432_ES1_0)
+			bypass_dpll(&prcm->cm_clkmode_dpll_core);
+		else
+			writel(CM_DLL_CTRL_NO_OVERRIDE, &prcm->cm_dll_ctrl);
+	}
 
 	do_sdram_init(EMIF1_BASE);
 	do_sdram_init(EMIF2_BASE);
@@ -1255,7 +1259,8 @@ void sdram_init(void)
 	}
 
 	/* for the shadow registers to take effect */
-	freq_update_core();
+	if (omap_rev != OMAP5432_ES1_0)
+		freq_update_core();
 
 	/* Do some testing after the init */
 	if (!in_sdram) {
diff --git a/arch/arm/include/asm/arch-omap4/clocks.h b/arch/arm/include/asm/arch-omap4/clocks.h
index 617729c32b..be20fc0ce6 100644
--- a/arch/arm/include/asm/arch-omap4/clocks.h
+++ b/arch/arm/include/asm/arch-omap4/clocks.h
@@ -525,6 +525,11 @@ struct omap4_scrm_regs {
 
 #define DPLL_CLKOUT_DIV_MASK	0x1F /* post-divider mask */
 
+/* CM_DLL_CTRL */
+#define CM_DLL_CTRL_OVERRIDE_SHIFT	0
+#define CM_DLL_CTRL_OVERRIDE_MASK	(1 << 0)
+#define CM_DLL_CTRL_NO_OVERRIDE		0
+
 /* CM_CLKMODE_DPLL */
 #define CM_CLKMODE_DPLL_REGM4XEN_SHIFT		11
 #define CM_CLKMODE_DPLL_REGM4XEN_MASK		(1 << 11)
diff --git a/arch/arm/include/asm/arch-omap5/clocks.h b/arch/arm/include/asm/arch-omap5/clocks.h
index f32cf3eeef..409e0e3f8c 100644
--- a/arch/arm/include/asm/arch-omap5/clocks.h
+++ b/arch/arm/include/asm/arch-omap5/clocks.h
@@ -490,6 +490,11 @@ struct omap5_prcm_regs {
 
 #define DPLL_CLKOUT_DIV_MASK	0x1F /* post-divider mask */
 
+/* CM_DLL_CTRL */
+#define CM_DLL_CTRL_OVERRIDE_SHIFT		0
+#define CM_DLL_CTRL_OVERRIDE_MASK		(1 << 0)
+#define CM_DLL_CTRL_NO_OVERRIDE			0
+
 /* CM_CLKMODE_DPLL */
 #define CM_CLKMODE_DPLL_REGM4XEN_SHIFT		11
 #define CM_CLKMODE_DPLL_REGM4XEN_MASK		(1 << 11)