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/*
*
* Common functions for OMAP4 based boards
*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
*
* Author :
* Aneesh V <aneesh@ti.com>
* Steve Sakoman <steve@sakoman.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/armv7.h>
#include <asm/arch/cpu.h>
#include <asm/arch/sys_proto.h>
#include <linux/sizes.h>
#include <asm/emif.h>
#include <asm/arch/gpio.h>
#include <asm/omap_common.h>
DECLARE_GLOBAL_DATA_PTR;
u32 *const omap_si_rev = (u32 *)OMAP_SRAM_SCRATCH_OMAP_REV;
static const struct gpio_bank gpio_bank_44xx[6] = {
{ (void *)OMAP44XX_GPIO1_BASE },
{ (void *)OMAP44XX_GPIO2_BASE },
{ (void *)OMAP44XX_GPIO3_BASE },
{ (void *)OMAP44XX_GPIO4_BASE },
{ (void *)OMAP44XX_GPIO5_BASE },
{ (void *)OMAP44XX_GPIO6_BASE },
};
const struct gpio_bank *const omap_gpio_bank = gpio_bank_44xx;
#ifdef CONFIG_SPL_BUILD
/*
* Some tuning of IOs for optimal power and performance
*/
void do_io_settings(void)
{
u32 lpddr2io;
u32 omap4_rev = omap_revision();
if (omap4_rev == OMAP4430_ES1_0)
lpddr2io = CONTROL_LPDDR2IO_SLEW_125PS_DRV8_PULL_DOWN;
else if (omap4_rev == OMAP4430_ES2_0)
lpddr2io = CONTROL_LPDDR2IO_SLEW_325PS_DRV8_GATE_KEEPER;
else
lpddr2io = CONTROL_LPDDR2IO_SLEW_315PS_DRV12_PULL_DOWN;
/* EMIF1 */
writel(lpddr2io, (*ctrl)->control_lpddr2io1_0);
writel(lpddr2io, (*ctrl)->control_lpddr2io1_1);
/* No pull for GR10 as per hw team's recommendation */
writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
(*ctrl)->control_lpddr2io1_2);
writel(CONTROL_LPDDR2IO_3_VAL, (*ctrl)->control_lpddr2io1_3);
/* EMIF2 */
writel(lpddr2io, (*ctrl)->control_lpddr2io2_0);
writel(lpddr2io, (*ctrl)->control_lpddr2io2_1);
/* No pull for GR10 as per hw team's recommendation */
writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
(*ctrl)->control_lpddr2io2_2);
writel(CONTROL_LPDDR2IO_3_VAL, (*ctrl)->control_lpddr2io2_3);
/*
* Some of these settings (TRIM values) come from eFuse and are
* in turn programmed in the eFuse at manufacturing time after
* calibration of the device. Do the software over-ride only if
* the device is not correctly trimmed
*/
if (!(readl((*ctrl)->control_std_fuse_opp_bgap) & 0xFFFF)) {
writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
(*ctrl)->control_ldosram_iva_voltage_ctrl);
writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
(*ctrl)->control_ldosram_mpu_voltage_ctrl);
writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
(*ctrl)->control_ldosram_core_voltage_ctrl);
}
/*
* Over-ride the register
* i. unconditionally for all 4430
* ii. only if un-trimmed for 4460
*/
if (!readl((*ctrl)->control_efuse_1))
writel(CONTROL_EFUSE_1_OVERRIDE, (*ctrl)->control_efuse_1);
if ((omap4_rev < OMAP4460_ES1_0) || !readl((*ctrl)->control_efuse_2))
writel(CONTROL_EFUSE_2_OVERRIDE, (*ctrl)->control_efuse_2);
}
#endif /* CONFIG_SPL_BUILD */
/* dummy fuction for omap4 */
void config_data_eye_leveling_samples(u32 emif_base)
{
}
void init_omap_revision(void)
{
/*
* For some of the ES2/ES1 boards ID_CODE is not reliable:
* Also, ES1 and ES2 have different ARM revisions
* So use ARM revision for identification
*/
unsigned int arm_rev = cortex_rev();
switch (arm_rev) {
case MIDR_CORTEX_A9_R0P1:
*omap_si_rev = OMAP4430_ES1_0;
break;
case MIDR_CORTEX_A9_R1P2:
switch (readl(CONTROL_ID_CODE)) {
case OMAP4_CONTROL_ID_CODE_ES2_0:
*omap_si_rev = OMAP4430_ES2_0;
break;
case OMAP4_CONTROL_ID_CODE_ES2_1:
*omap_si_rev = OMAP4430_ES2_1;
break;
case OMAP4_CONTROL_ID_CODE_ES2_2:
*omap_si_rev = OMAP4430_ES2_2;
break;
default:
*omap_si_rev = OMAP4430_ES2_0;
break;
}
break;
case MIDR_CORTEX_A9_R1P3:
*omap_si_rev = OMAP4430_ES2_3;
break;
case MIDR_CORTEX_A9_R2P10:
switch (readl(CONTROL_ID_CODE)) {
case OMAP4470_CONTROL_ID_CODE_ES1_0:
*omap_si_rev = OMAP4470_ES1_0;
break;
case OMAP4460_CONTROL_ID_CODE_ES1_1:
*omap_si_rev = OMAP4460_ES1_1;
break;
case OMAP4460_CONTROL_ID_CODE_ES1_0:
default:
*omap_si_rev = OMAP4460_ES1_0;
break;
}
break;
default:
*omap_si_rev = OMAP4430_SILICON_ID_INVALID;
break;
}
}
#ifndef CONFIG_SYS_L2CACHE_OFF
void v7_outer_cache_enable(void)
{
omap_smc1(OMAP4_SERVICE_PL310_CONTROL_REG_SET, 1);
}
void v7_outer_cache_disable(void)
{
omap_smc1(OMAP4_SERVICE_PL310_CONTROL_REG_SET, 0);
}
#endif /* !CONFIG_SYS_L2CACHE_OFF */
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