[U-Boot] [PATCH 2/3] OMAP3: Add support for DPLL5 (usbhost)
Alexander Holler
holler at ahsoftware.de
Sat Apr 2 00:16:13 CEST 2011
Signed-off-by: Alexander Holler <holler at ahsoftware.de>
---
arch/arm/cpu/armv7/omap3/clock.c | 20 ++++++++++++++++++
arch/arm/cpu/armv7/omap3/lowlevel_init.S | 22 ++++++++++++++++++++
arch/arm/include/asm/arch-omap3/clocks.h | 1 +
arch/arm/include/asm/arch-omap3/clocks_omap3.h | 26 ++++++++++++++++++++++++
arch/arm/include/asm/arch-omap3/cpu.h | 21 ++++++++++++++----
5 files changed, 85 insertions(+), 5 deletions(-)
diff --git a/arch/arm/cpu/armv7/omap3/clock.c b/arch/arm/cpu/armv7/omap3/clock.c
index 2238c52..3d38d08 100644
--- a/arch/arm/cpu/armv7/omap3/clock.c
+++ b/arch/arm/cpu/armv7/omap3/clock.c
@@ -278,6 +278,25 @@ static void dpll4_init_34xx(u32 sil_index, u32 clk_index)
wait_on_value(ST_PERIPH_CLK, 2, &prcm_base->idlest_ckgen, LDELAY);
}
+static void dpll5_init_34xx(u32 sil_index, u32 clk_index)
+{
+ struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
+ dpll_param *ptr = (dpll_param *) get_per2_dpll_param();
+
+ /* Moving it to the right sysclk base */
+ ptr = ptr + clk_index;
+
+ /* PER2 DPLL (DPLL5) */
+ sr32(&prcm_base->clken2_pll, 0, 3, PLL_STOP);
+ wait_on_value(1, 0, &prcm_base->idlest2_ckgen, LDELAY);
+ sr32(&prcm_base->clksel5_pll, 0, 5, ptr->m2); /* set M2 (usbtll_fck) */
+ sr32(&prcm_base->clksel4_pll, 8, 11, ptr->m); /* set m (11-bit multiplier) */
+ sr32(&prcm_base->clksel4_pll, 0, 7, ptr->n); /* set n (7-bit divider)*/
+ sr32(&prcm_base->clken_pll, 4, 4, ptr->fsel); /* FREQSEL */
+ sr32(&prcm_base->clken2_pll, 0, 3, PLL_LOCK); /* lock mode */
+ wait_on_value(1, 1, &prcm_base->idlest2_ckgen, LDELAY);
+}
+
static void mpu_init_34xx(u32 sil_index, u32 clk_index)
{
struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
@@ -587,6 +606,7 @@ void prcm_init(void)
dpll3_init_34xx(sil_index, clk_index);
dpll4_init_34xx(sil_index, clk_index);
+ dpll5_init_34xx(sil_index, clk_index);
iva_init_34xx(sil_index, clk_index);
mpu_init_34xx(sil_index, clk_index);
diff --git a/arch/arm/cpu/armv7/omap3/lowlevel_init.S b/arch/arm/cpu/armv7/omap3/lowlevel_init.S
index 109481e..1458072 100644
--- a/arch/arm/cpu/armv7/omap3/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/omap3/lowlevel_init.S
@@ -360,6 +360,28 @@ get_per_dpll_param:
adr r0, per_dpll_param
mov pc, lr
+/* PER2 DPLL values */
+per2_dpll_param:
+/* 12MHz */
+.word PER2_M_12, PER2_N_12, PER2_FSEL_12, PER2_M2_12
+
+/* 13MHz */
+.word PER2_M_13, PER2_N_13, PER2_FSEL_13, PER2_M2_13
+
+/* 19.2MHz */
+.word PER2_M_19P2, PER2_N_19P2, PER2_FSEL_19P2, PER2_M2_19P2
+
+/* 26MHz */
+.word PER2_M_26, PER2_N_26, PER2_FSEL_26, PER2_M2_26
+
+/* 38.4MHz */
+.word PER2_M_38P4, PER2_N_38P4, PER2_FSEL_38P4, PER2_M2_38P4
+
+.globl get_per2_dpll_param
+get_per2_dpll_param:
+ adr r0, per2_dpll_param
+ mov pc, lr
+
/*
* Tables for 36XX/37XX devices
*
diff --git a/arch/arm/include/asm/arch-omap3/clocks.h b/arch/arm/include/asm/arch-omap3/clocks.h
index 40f80ba..bed0002 100644
--- a/arch/arm/include/asm/arch-omap3/clocks.h
+++ b/arch/arm/include/asm/arch-omap3/clocks.h
@@ -68,6 +68,7 @@ extern dpll_param *get_mpu_dpll_param(void);
extern dpll_param *get_iva_dpll_param(void);
extern dpll_param *get_core_dpll_param(void);
extern dpll_param *get_per_dpll_param(void);
+extern dpll_param *get_per2_dpll_param(void);
extern dpll_param *get_36x_mpu_dpll_param(void);
extern dpll_param *get_36x_iva_dpll_param(void);
diff --git a/arch/arm/include/asm/arch-omap3/clocks_omap3.h b/arch/arm/include/asm/arch-omap3/clocks_omap3.h
index 30ef690..ef600dd 100644
--- a/arch/arm/include/asm/arch-omap3/clocks_omap3.h
+++ b/arch/arm/include/asm/arch-omap3/clocks_omap3.h
@@ -282,6 +282,32 @@
#define PER_FSEL_38P4 0x07
#define PER_M2_38P4 0x09
+/* PER2 DPLL */
+#define PER2_M_12 0x78
+#define PER2_N_12 0x0B
+#define PER2_FSEL_12 0x03
+#define PER2_M2_12 0x01
+
+#define PER2_M_13 0x78
+#define PER2_N_13 0x0C
+#define PER2_FSEL_13 0x03
+#define PER2_M2_13 0x01
+
+#define PER2_M_19P2 0x2EE
+#define PER2_N_19P2 0x0B
+#define PER2_FSEL_19P2 0x06
+#define PER2_M2_19P2 0x0A
+
+#define PER2_M_26 0x78
+#define PER2_N_26 0x0C
+#define PER2_FSEL_26 0x03
+#define PER2_M2_26 0x01
+
+#define PER2_M_38P4 0x2EE
+#define PER2_N_38P4 0x0B
+#define PER2_FSEL_38P4 0x06
+#define PER2_M2_38P4 0x0A
+
/* 36XX PER DPLL */
#define PER_36XX_M_12 0x1B0
diff --git a/arch/arm/include/asm/arch-omap3/cpu.h b/arch/arm/include/asm/arch-omap3/cpu.h
index 962d6d4..e944de7 100644
--- a/arch/arm/include/asm/arch-omap3/cpu.h
+++ b/arch/arm/include/asm/arch-omap3/cpu.h
@@ -347,10 +347,13 @@ struct prcm {
u32 clksel2_pll_mpu; /* 0x944 */
u8 res6[0xb8];
u32 fclken1_core; /* 0xa00 */
- u8 res7[0xc];
+ u32 res_fclken2_core;
+ u32 fclken3_core; /* 0xa08 */
+ u8 res7[0x4];
u32 iclken1_core; /* 0xa10 */
u32 iclken2_core; /* 0xa14 */
- u8 res8[0x28];
+ u32 iclken3_core; /* 0xa18 */
+ u8 res8[0x24];
u32 clksel_core; /* 0xa40 */
u8 res9[0xbc];
u32 fclken_gfx; /* 0xb00 */
@@ -368,13 +371,17 @@ struct prcm {
u32 clksel_wkup; /* 0xc40 */
u8 res16[0xbc];
u32 clken_pll; /* 0xd00 */
- u8 res17[0x1c];
+ u32 clken2_pll; /* 0xd04 */
+ u8 res17[0x18];
u32 idlest_ckgen; /* 0xd20 */
- u8 res18[0x1c];
+ u32 idlest2_ckgen; /* 0xd24 */
+ u8 res18[0x18];
u32 clksel1_pll; /* 0xd40 */
u32 clksel2_pll; /* 0xd44 */
u32 clksel3_pll; /* 0xd48 */
- u8 res19[0xb4];
+ u32 clksel4_pll; /* 0xd4c */
+ u32 clksel5_pll; /* 0xd50 */
+ u8 res19[0xac];
u32 fclken_dss; /* 0xe00 */
u8 res20[0xc];
u32 iclken_dss; /* 0xe10 */
@@ -394,6 +401,10 @@ struct prcm {
u32 clksel_per; /* 0x1040 */
u8 res28[0xfc];
u32 clksel1_emu; /* 0x1140 */
+ u8 res29[0x2bc];
+ u32 fclken_usbhost; /* 0x1400 */
+ u8 res30[0xc];
+ u32 iclken_usbhost; /* 0x1410 */
};
#else /* __ASSEMBLY__ */
#define CM_CLKSEL_CORE 0x48004a40
--
1.7.3.4
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