diff options
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/clocks-common.c')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/clocks-common.c | 99 |
1 files changed, 42 insertions, 57 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c index 4e7456992f..10d286a6d4 100644 --- a/arch/arm/cpu/armv7/omap-common/clocks-common.c +++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c @@ -245,6 +245,11 @@ void configure_mpu_dpll(void) CM_CLKSEL_DCC_EN_MASK); } + setbits_le32(&prcm->cm_mpu_mpu_clkctrl, + MPU_CLKCTRL_CLKSEL_EMIF_DIV_MODE_MASK); + setbits_le32(&prcm->cm_mpu_mpu_clkctrl, + MPU_CLKCTRL_CLKSEL_ABE_DIV_MODE_MASK); + params = get_mpu_dpll_params(); do_setup_dpll(&prcm->cm_clkmode_dpll_mpu, params, DPLL_LOCK, "mpu"); @@ -360,56 +365,51 @@ static void setup_non_essential_dplls(void) } #endif -void do_scale_tps62361(u32 reg, u32 volt_mv) +void do_scale_tps62361(int gpio, u32 reg, u32 volt_mv) { - u32 temp, step; + u32 step; + int ret = 0; + + /* See if we can first get the GPIO if needed */ + if (gpio >= 0) + ret = gpio_request(gpio, "TPS62361_VSEL0_GPIO"); + if (ret < 0) { + printf("%s: gpio %d request failed %d\n", __func__, gpio, ret); + gpio = -1; + } + + /* Pull the GPIO low to select SET0 register, while we program SET1 */ + if (gpio >= 0) + gpio_direction_output(gpio, 0); step = volt_mv - TPS62361_BASE_VOLT_MV; step /= 10; - temp = TPS62361_I2C_SLAVE_ADDR | - (reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) | - (step << PRM_VC_VAL_BYPASS_DATA_SHIFT) | - PRM_VC_VAL_BYPASS_VALID_BIT; debug("do_scale_tps62361: volt - %d step - 0x%x\n", volt_mv, step); - - writel(temp, &prcm->prm_vc_val_bypass); - if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0, - &prcm->prm_vc_val_bypass, LDELAY)) { + if (omap_vc_bypass_send_value(TPS62361_I2C_SLAVE_ADDR, reg, step)) puts("Scaling voltage failed for vdd_mpu from TPS\n"); - } + + /* Pull the GPIO high to select SET1 register */ + if (gpio >= 0) + gpio_direction_output(gpio, 1); } void do_scale_vcore(u32 vcore_reg, u32 volt_mv) { - u32 temp, offset_code; - u32 step = 12660; /* 12.66 mV represented in uV */ + u32 offset_code; u32 offset = volt_mv; /* convert to uV for better accuracy in the calculations */ offset *= 1000; - if (omap_revision() == OMAP4430_ES1_0) - offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV; - else - offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV; - - offset_code = (offset + step - 1) / step; - /* The code starts at 1 not 0 */ - offset_code++; + offset_code = get_offset_code(offset); debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv, offset_code); - temp = SMPS_I2C_SLAVE_ADDR | - (vcore_reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) | - (offset_code << PRM_VC_VAL_BYPASS_DATA_SHIFT) | - PRM_VC_VAL_BYPASS_VALID_BIT; - writel(temp, &prcm->prm_vc_val_bypass); - if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0, - &prcm->prm_vc_val_bypass, LDELAY)) { + if (omap_vc_bypass_send_value(SMPS_I2C_SLAVE_ADDR, + vcore_reg, offset_code)) printf("Scaling voltage failed for 0x%x\n", vcore_reg); - } } static inline void enable_clock_domain(u32 *const clkctrl_reg, u32 enable_mode) @@ -452,6 +452,7 @@ void freq_update_core(void) { u32 freq_config1 = 0; const struct dpll_params *core_dpll_params; + u32 omap_rev = omap_revision(); core_dpll_params = get_core_dpll_params(); /* Put EMIF clock domain in sw wakeup mode */ @@ -477,11 +478,18 @@ void freq_update_core(void) hang(); } - /* Put EMIF clock domain back in hw auto mode */ - enable_clock_domain(&prcm->cm_memif_clkstctrl, - CD_CLKCTRL_CLKTRCTRL_HW_AUTO); - wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl); - wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl); + /* + * Putting EMIF in HW_AUTO is seen to be causing issues with + * EMIF clocks and the master DLL. Put EMIF in SW_WKUP + * in OMAP5430 ES1.0 silicon + */ + if (omap_rev != OMAP5430_ES1_0) { + /* Put EMIF clock domain back in hw auto mode */ + enable_clock_domain(&prcm->cm_memif_clkstctrl, + CD_CLKCTRL_CLKTRCTRL_HW_AUTO); + wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl); + wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl); + } } void bypass_dpll(u32 *const base) @@ -529,29 +537,6 @@ void setup_clocks_for_console(void) CD_CLKCTRL_CLKTRCTRL_SHIFT); } -void setup_sri2c(void) -{ - u32 sys_clk_khz, cycles_hi, cycles_low, temp; - - sys_clk_khz = get_sys_clk_freq() / 1000; - - /* - * Setup the dedicated I2C controller for Voltage Control - * I2C clk - high period 40% low period 60% - */ - cycles_hi = sys_clk_khz * 4 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10; - cycles_low = sys_clk_khz * 6 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10; - /* values to be set in register - less by 5 & 7 respectively */ - cycles_hi -= 5; - cycles_low -= 7; - temp = (cycles_hi << PRM_VC_CFG_I2C_CLK_SCLH_SHIFT) | - (cycles_low << PRM_VC_CFG_I2C_CLK_SCLL_SHIFT); - writel(temp, &prcm->prm_vc_cfg_i2c_clk); - - /* Disable high speed mode and all advanced features */ - writel(0x0, &prcm->prm_vc_cfg_i2c_mode); -} - void do_enable_clocks(u32 *const *clk_domains, u32 *const *clk_modules_hw_auto, u32 *const *clk_modules_explicit_en, |