* Santosh Shilimkar <santosh.shilimkar@ti.com>
* Rajendra Nayak <rnayak@ti.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <i2c.h>
#include <asm/omap_common.h>
#include <asm/gpio.h>
-#include <asm/arch/clocks.h>
+#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/utils.h>
#include <asm/omap_gpio.h>
const u32 sys_clk_array[8] = {
12000000, /* 12 MHz */
- 13000000, /* 13 MHz */
+ 20000000, /* 20 MHz */
16800000, /* 16.8 MHz */
19200000, /* 19.2 MHz */
26000000, /* 26 MHz */
27000000, /* 27 MHz */
38400000, /* 38.4 MHz */
- 20000000, /* 20 MHz */
};
static inline u32 __get_sys_clk_index(void)
/* SYS_CLKSEL - 1 to match the dpll param array indices */
ind = (readl((*prcm)->cm_sys_clksel) &
CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1;
- /*
- * SYS_CLKSEL value for 20MHz is 0. This is introduced newly
- * in DRA7XX socs. SYS_CLKSEL -1 will be greater than
- * NUM_SYS_CLK. So considering the last 3 bits as the index
- * for the dpll param array.
- */
- ind &= CM_SYS_CLKSEL_SYS_CLKSEL_MASK;
}
return ind;
}
return &dpll_data->ddr[sysclk_ind];
}
+#ifdef CONFIG_DRIVER_TI_CPSW
+static const struct dpll_params *get_gmac_dpll_params
+ (struct dplls const *dpll_data)
+{
+ u32 sysclk_ind = get_sys_clk_index();
+
+ if (!dpll_data->gmac)
+ return NULL;
+ return &dpll_data->gmac[sysclk_ind];
+}
+#endif
+
static void do_setup_dpll(u32 const base, const struct dpll_params *params,
u8 lock, char *dpll)
{
debug("MPU DPLL locked\n");
}
-#ifdef CONFIG_USB_EHCI_OMAP
+#if defined(CONFIG_USB_EHCI_OMAP) || defined(CONFIG_USB_XHCI_OMAP)
static void setup_usb_dpll(void)
{
const struct dpll_params *params;
{
u32 temp;
const struct dpll_params *params;
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)EMIF1_BASE;
debug("setup_dplls\n");
* Core DPLL will be locked after setting up EMIF
* using the FREQ_UPDATE method(freq_update_core())
*/
- if (emif_sdram_type() == EMIF_SDRAM_TYPE_LPDDR2)
+ if (emif_sdram_type(readl(&emif->emif_sdram_config)) ==
+ EMIF_SDRAM_TYPE_LPDDR2)
do_setup_dpll((*prcm)->cm_clkmode_dpll_core, params,
DPLL_NO_LOCK, "core");
else
/* MPU dpll */
configure_mpu_dpll();
-#ifdef CONFIG_USB_EHCI_OMAP
+#if defined(CONFIG_USB_EHCI_OMAP) || defined(CONFIG_USB_XHCI_OMAP)
setup_usb_dpll();
#endif
params = get_ddr_dpll_params(*dplls_data);
do_setup_dpll((*prcm)->cm_clkmode_dpll_ddrphy,
params, DPLL_LOCK, "ddr");
-}
-
-#ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL
-static void setup_non_essential_dplls(void)
-{
- u32 abe_ref_clk;
- const struct dpll_params *params;
-
- /* IVA */
- clrsetbits_le32((*prcm)->cm_bypclk_dpll_iva,
- CM_BYPCLK_DPLL_IVA_CLKSEL_MASK, DPLL_IVA_CLKSEL_CORE_X2_DIV_2);
-
- params = get_iva_dpll_params(*dplls_data);
- do_setup_dpll((*prcm)->cm_clkmode_dpll_iva, params, DPLL_LOCK, "iva");
- /* Configure ABE dpll */
- params = get_abe_dpll_params(*dplls_data);
-#ifdef CONFIG_SYS_OMAP_ABE_SYSCK
- abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_SYSCLK;
-#else
- abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_32KCLK;
- /*
- * We need to enable some additional options to achieve
- * 196.608MHz from 32768 Hz
- */
- setbits_le32((*prcm)->cm_clkmode_dpll_abe,
- CM_CLKMODE_DPLL_DRIFTGUARD_EN_MASK|
- CM_CLKMODE_DPLL_RELOCK_RAMP_EN_MASK|
- CM_CLKMODE_DPLL_LPMODE_EN_MASK|
- CM_CLKMODE_DPLL_REGM4XEN_MASK);
- /* Spend 4 REFCLK cycles at each stage */
- clrsetbits_le32((*prcm)->cm_clkmode_dpll_abe,
- CM_CLKMODE_DPLL_RAMP_RATE_MASK,
- 1 << CM_CLKMODE_DPLL_RAMP_RATE_SHIFT);
+#ifdef CONFIG_DRIVER_TI_CPSW
+ params = get_gmac_dpll_params(*dplls_data);
+ do_setup_dpll((*prcm)->cm_clkmode_dpll_gmac, params,
+ DPLL_LOCK, "gmac");
#endif
-
- /* Select the right reference clk */
- clrsetbits_le32((*prcm)->cm_abe_pll_ref_clksel,
- CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK,
- abe_ref_clk << CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT);
- /* Lock the dpll */
- do_setup_dpll((*prcm)->cm_clkmode_dpll_abe, params, DPLL_LOCK, "abe");
}
-#endif
u32 get_offset_code(u32 volt_offset, struct pmic_data *pmic)
{
{
u32 offset_code;
u32 offset = volt_mv;
+#ifndef CONFIG_DRA7XX
int ret = 0;
+#endif
+
+ if (!volt_mv)
+ return;
+ pmic->pmic_bus_init();
+#ifndef CONFIG_DRA7XX
/* See if we can first get the GPIO if needed */
if (pmic->gpio_en)
ret = gpio_request(pmic->gpio, "PMIC_GPIO");
/* Pull the GPIO low to select SET0 register, while we program SET1 */
if (pmic->gpio_en)
gpio_direction_output(pmic->gpio, 0);
-
+#endif
/* convert to uV for better accuracy in the calculations */
offset *= 1000;
debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv,
offset_code);
- if (omap_vc_bypass_send_value(SMPS_I2C_SLAVE_ADDR,
- vcore_reg, offset_code))
+ if (pmic->pmic_write(pmic->i2c_slave_addr, vcore_reg, offset_code))
printf("Scaling voltage failed for 0x%x\n", vcore_reg);
-
+#ifndef CONFIG_DRA7XX
if (pmic->gpio_en)
gpio_direction_output(pmic->gpio, 1);
+#endif
+}
+
+static u32 optimize_vcore_voltage(struct volts const *v)
+{
+ u32 val;
+ if (!v->value)
+ return 0;
+ if (!v->efuse.reg)
+ return v->value;
+
+ switch (v->efuse.reg_bits) {
+ case 16:
+ val = readw(v->efuse.reg);
+ break;
+ case 32:
+ val = readl(v->efuse.reg);
+ break;
+ default:
+ printf("Error: efuse 0x%08x bits=%d unknown\n",
+ v->efuse.reg, v->efuse.reg_bits);
+ return v->value;
+ }
+
+ if (!val) {
+ printf("Error: efuse 0x%08x bits=%d val=0, using %d\n",
+ v->efuse.reg, v->efuse.reg_bits, v->value);
+ return v->value;
+ }
+
+ debug("%s:efuse 0x%08x bits=%d Vnom=%d, using efuse value %d\n",
+ __func__, v->efuse.reg, v->efuse.reg_bits, v->value, val);
+ return val;
}
+#ifdef CONFIG_IODELAY_RECALIBRATION
+void __weak recalibrate_iodelay(void)
+{
+}
+#endif
+
/*
- * 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
+ * Setup the voltages for the main SoC core power domains.
+ * We start with the maximum voltages allowed here, as set in the corresponding
+ * vcores_data struct, and then scale (usually down) to the fused values that
+ * are retrieved from the SoC. The scaling happens only if the efuse.reg fields
+ * are initialised.
+ * Rail grouping is supported for the DRA7xx SoCs only, therefore the code is
+ * compiled conditionally. Note that the new code writes the scaled (or zeroed)
+ * values back to the vcores_data struct for eventual reuse. Zero values mean
+ * that the corresponding rails are not controlled separately, and are not sent
+ * to the PMIC.
*/
void scale_vcores(struct vcores_data const *vcores)
{
- omap_vc_init(PRM_VC_I2C_CHANNEL_FREQ_KHZ);
+#if defined(CONFIG_DRA7XX)
+ int i;
+ struct volts *pv = (struct volts *)vcores;
+ struct volts *px;
+
+ for (i=0; i<(sizeof(struct vcores_data)/sizeof(struct volts)); i++) {
+ debug("%d -> ", pv->value);
+ if (pv->value) {
+ /* Handle non-empty members only */
+ pv->value = optimize_vcore_voltage(pv);
+ px = (struct volts *)vcores;
+ while (px < pv) {
+ /*
+ * Scan already handled non-empty members to see
+ * if we have a group and find the max voltage,
+ * which is set to the first occurance of the
+ * particular SMPS; the other group voltages are
+ * zeroed.
+ */
+ if (px->value) {
+ if ((pv->pmic->i2c_slave_addr ==
+ px->pmic->i2c_slave_addr) &&
+ (pv->addr == px->addr)) {
+ /* Same PMIC, same SMPS */
+ if (pv->value > px->value)
+ px->value = pv->value;
+
+ pv->value = 0;
+ }
+ }
+ px++;
+ }
+ }
+ debug("%d\n", pv->value);
+ pv++;
+ }
+
+ debug("cor: %d\n", vcores->core.value);
+ do_scale_vcore(vcores->core.addr, vcores->core.value, vcores->core.pmic);
+ /*
+ * IO delay recalibration should be done immediately after
+ * adjusting AVS voltages for VDD_CORE_L.
+ * Respective boards should call __recalibrate_iodelay()
+ * with proper mux, virtual and manual mode configurations.
+ */
+#ifdef CONFIG_IODELAY_RECALIBRATION
+ recalibrate_iodelay();
+#endif
- do_scale_vcore(vcores->core.addr, vcores->core.value,
- vcores->core.pmic);
+ debug("mpu: %d\n", vcores->mpu.value);
+ do_scale_vcore(vcores->mpu.addr, vcores->mpu.value, vcores->mpu.pmic);
+ /* Configure MPU ABB LDO after scale */
+ abb_setup((*ctrl)->control_std_fuse_opp_vdd_mpu_2,
+ (*ctrl)->control_wkup_ldovbb_mpu_voltage_ctrl,
+ (*prcm)->prm_abbldo_mpu_setup,
+ (*prcm)->prm_abbldo_mpu_ctrl,
+ (*prcm)->prm_irqstatus_mpu_2,
+ OMAP_ABB_MPU_TXDONE_MASK,
+ OMAP_ABB_FAST_OPP);
+
+ /* The .mm member is not used for the DRA7xx */
+
+ debug("gpu: %d\n", vcores->gpu.value);
+ do_scale_vcore(vcores->gpu.addr, vcores->gpu.value, vcores->gpu.pmic);
+ debug("eve: %d\n", vcores->eve.value);
+ do_scale_vcore(vcores->eve.addr, vcores->eve.value, vcores->eve.pmic);
+ debug("iva: %d\n", vcores->iva.value);
+ do_scale_vcore(vcores->iva.addr, vcores->iva.value, vcores->iva.pmic);
+ /* Might need udelay(1000) here if debug is enabled to see all prints */
+#else
+ u32 val;
- do_scale_vcore(vcores->mpu.addr, vcores->mpu.value,
- vcores->mpu.pmic);
+ val = optimize_vcore_voltage(&vcores->core);
+ do_scale_vcore(vcores->core.addr, val, vcores->core.pmic);
- do_scale_vcore(vcores->mm.addr, vcores->mm.value,
- vcores->mm.pmic);
+ /*
+ * IO delay recalibration should be done immediately after
+ * adjusting AVS voltages for VDD_CORE_L.
+ * Respective boards should call __recalibrate_iodelay()
+ * with proper mux, virtual and manual mode configurations.
+ */
+#ifdef CONFIG_IODELAY_RECALIBRATION
+ recalibrate_iodelay();
+#endif
- 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);
- }
+ val = optimize_vcore_voltage(&vcores->mpu);
+ do_scale_vcore(vcores->mpu.addr, val, vcores->mpu.pmic);
+
+ /* Configure MPU ABB LDO after scale */
+ abb_setup((*ctrl)->control_std_fuse_opp_vdd_mpu_2,
+ (*ctrl)->control_wkup_ldovbb_mpu_voltage_ctrl,
+ (*prcm)->prm_abbldo_mpu_setup,
+ (*prcm)->prm_abbldo_mpu_ctrl,
+ (*prcm)->prm_irqstatus_mpu_2,
+ OMAP_ABB_MPU_TXDONE_MASK,
+ OMAP_ABB_FAST_OPP);
+
+ val = optimize_vcore_voltage(&vcores->mm);
+ do_scale_vcore(vcores->mm.addr, val, vcores->mm.pmic);
+
+ val = optimize_vcore_voltage(&vcores->gpu);
+ do_scale_vcore(vcores->gpu.addr, val, vcores->gpu.pmic);
+
+ val = optimize_vcore_voltage(&vcores->eve);
+ do_scale_vcore(vcores->eve.addr, val, vcores->eve.pmic);
+
+ val = optimize_vcore_voltage(&vcores->iva);
+ do_scale_vcore(vcores->iva.addr, val, vcores->iva.pmic);
+#endif
}
static inline void enable_clock_domain(u32 const clkctrl_reg, u32 enable_mode)
case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
enable_basic_clocks();
+ timer_init();
scale_vcores(*omap_vcores);
setup_dplls();
-#ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL
- setup_non_essential_dplls();
- enable_non_essential_clocks();
-#endif
setup_warmreset_time();
break;
default:
if (OMAP_INIT_CONTEXT_SPL != omap_hw_init_context())
enable_basic_uboot_clocks();
}
+
+void gpi2c_init(void)
+{
+ static int gpi2c = 1;
+
+ if (gpi2c) {
+ i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED,
+ CONFIG_SYS_OMAP24_I2C_SLAVE);
+ gpi2c = 0;
+ }
+}
projects / platform / kernel / u-boot.git / blobdiff