diff options
| author | Alexander Holler <holler@ahsoftware.de> | 2011-04-19 09:27:55 -0400 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-04-27 19:38:09 +0200 |
| commit | 7b89795f17c990263a17ecf25e447df16e379748 (patch) | |
| tree | fe0ede00fa5eee1bdbb52169eb4420388eea0847 /arch/arm/cpu | |
| parent | 320f56fc9c8c94bbabb853930c883b4c3bd93e99 (diff) | |
| download | u-boot-imx-7b89795f17c990263a17ecf25e447df16e379748.zip u-boot-imx-7b89795f17c990263a17ecf25e447df16e379748.tar.gz u-boot-imx-7b89795f17c990263a17ecf25e447df16e379748.tar.bz2 | |
OMAP3: Add support for DPLL5 (usbhost)
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv7/omap3/clock.c | 20 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/omap3/lowlevel_init.S | 22 |
2 files changed, 42 insertions, 0 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 * |