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author | SRICHARAN R <r.sricharan@ti.com> | 2013-02-04 04:22:02 +0000 |
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committer | Tom Rini <trini@ti.com> | 2013-03-11 11:06:10 -0400 |
commit | 3fcdd4a5f8ba0e0fac4b2afdb5e90efac9f7f301 (patch) | |
tree | eba59f79109e214726acd882ae64083641700d82 /arch/arm/cpu/armv7/omap-common/clocks-common.c | |
parent | ee9447bfe37a646a8dce182e6f625f27c10512a0 (diff) | |
download | u-boot-imx-3fcdd4a5f8ba0e0fac4b2afdb5e90efac9f7f301.zip u-boot-imx-3fcdd4a5f8ba0e0fac4b2afdb5e90efac9f7f301.tar.gz u-boot-imx-3fcdd4a5f8ba0e0fac4b2afdb5e90efac9f7f301.tar.bz2 |
ARM: OMAP4+: Clean up the pmic code
The pmic code is duplicated for OMAP 4 and 5.
Instead move the data to Soc specific place and
share the code.
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/clocks-common.c')
-rw-r--r-- | arch/arm/cpu/armv7/omap-common/clocks-common.c | 83 |
1 files changed, 57 insertions, 26 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c index 2becc4a..88e5336 100644 --- a/arch/arm/cpu/armv7/omap-common/clocks-common.c +++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c @@ -443,44 +443,45 @@ static void setup_non_essential_dplls(void) } #endif -void do_scale_tps62361(int gpio, u32 reg, u32 volt_mv) +u32 get_offset_code(u32 volt_offset, struct pmic_data *pmic) { - 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); + u32 offset_code; - step = volt_mv - TPS62361_BASE_VOLT_MV; - step /= 10; + volt_offset -= pmic->base_offset; - debug("do_scale_tps62361: volt - %d step - 0x%x\n", volt_mv, step); - if (omap_vc_bypass_send_value(TPS62361_I2C_SLAVE_ADDR, reg, step)) - puts("Scaling voltage failed for vdd_mpu from TPS\n"); + offset_code = (volt_offset + pmic->step - 1) / pmic->step; - /* Pull the GPIO high to select SET1 register */ - if (gpio >= 0) - gpio_direction_output(gpio, 1); + /* + * Offset codes 1-6 all give the base voltage in Palmas + * Offset code 0 switches OFF the SMPS + */ + return offset_code + pmic->start_code; } -void do_scale_vcore(u32 vcore_reg, u32 volt_mv) +void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic) { u32 offset_code; u32 offset = volt_mv; + int ret = 0; + + /* See if we can first get the GPIO if needed */ + if (pmic->gpio_en) + ret = gpio_request(pmic->gpio, "PMIC_GPIO"); + + if (ret < 0) { + printf("%s: gpio %d request failed %d\n", __func__, + pmic->gpio, ret); + return; + } + + /* Pull the GPIO low to select SET0 register, while we program SET1 */ + if (pmic->gpio_en) + gpio_direction_output(pmic->gpio, 0); /* convert to uV for better accuracy in the calculations */ offset *= 1000; - offset_code = get_offset_code(offset); + offset_code = get_offset_code(offset, pmic); debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv, offset_code); @@ -488,6 +489,36 @@ void do_scale_vcore(u32 vcore_reg, u32 volt_mv) if (omap_vc_bypass_send_value(SMPS_I2C_SLAVE_ADDR, vcore_reg, offset_code)) printf("Scaling voltage failed for 0x%x\n", vcore_reg); + + if (pmic->gpio_en) + gpio_direction_output(pmic->gpio, 1); +} + +/* + * Setup the voltages for vdd_mpu, vdd_core, and vdd_iva + * We set the maximum voltages allowed here because Smart-Reflex is not + * enabled in bootloader. Voltage initialization in the kernel will set + * these to the nominal values after enabling Smart-Reflex + */ +void scale_vcores(struct vcores_data const *vcores) +{ + omap_vc_init(PRM_VC_I2C_CHANNEL_FREQ_KHZ); + + do_scale_vcore(vcores->core.addr, vcores->core.value, + vcores->core.pmic); + + do_scale_vcore(vcores->mpu.addr, vcores->mpu.value, + vcores->mpu.pmic); + + do_scale_vcore(vcores->mm.addr, vcores->mm.value, + vcores->mm.pmic); + + if (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3) { + /* Configure LDO SRAM "magic" bits */ + writel(2, (*prcm)->prm_sldo_core_setup); + writel(2, (*prcm)->prm_sldo_mpu_setup); + writel(2, (*prcm)->prm_sldo_mm_setup); + } } static inline void enable_clock_domain(u32 const clkctrl_reg, u32 enable_mode) @@ -656,7 +687,7 @@ void prcm_init(void) case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR: case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH: enable_basic_clocks(); - scale_vcores(); + scale_vcores(*omap_vcores); setup_dplls(); #ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL setup_non_essential_dplls(); |