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authorLokesh Vutla <lokeshvutla@ti.com>2012-05-22 00:03:26 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-07-07 14:07:24 +0200
commit753bae8c5dd4ba92a39b06ea9a551be962053f93 (patch)
tree39a9614f4f53620d8f5d3c42aa7d98f1f04b46f1 /arch
parent784ab7c545d25288a82216d18e2b0ca3beae470b (diff)
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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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv7/omap-common/clocks-common.c8
-rw-r--r--arch/arm/cpu/armv7/omap-common/emif-common.c13
-rw-r--r--arch/arm/include/asm/arch-omap4/clocks.h5
-rw-r--r--arch/arm/include/asm/arch-omap5/clocks.h5
4 files changed, 25 insertions, 6 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c
index 10d286a..b1fd277 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 846511d..23cf619 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 617729c..be20fc0 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 f32cf3e..409e0e3 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)