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OMAP5: Configure the io settings for omap5432 uevm board

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This patch adds the IO settings required for OMAP5432 uevm's DDR3 pads

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Lokesh Vutla 2012-05-22 00:03:23 +00:00 • committed by Albert ARIBAUD
parent 0a0bf7b217
commit eb4e18e89e
2 changed files with 93 additions and 20 deletions
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98
arch/arm/cpu/armv7/omap5/hwinit.c
View file

@ -52,6 +52,81 @@ static struct gpio_bank gpio_bank_54xx[6] = {
const struct gpio_bank *const omap_gpio_bank = gpio_bank_54xx;
#ifdef CONFIG_SPL_BUILD
/* LPDDR2 specific IO settings */
static void io_settings_lpddr2(void)
{
struct omap_sys_ctrl_regs *ioregs_base =
(struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE;
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
&(ioregs_base->control_ddrch1_0));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
&(ioregs_base->control_ddrch1_1));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
&(ioregs_base->control_ddrch2_0));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
&(ioregs_base->control_ddrch2_1));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_CK_CKE_NCS_CA_PULL_DOWN,
&(ioregs_base->control_lpddr2ch1_0));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_CK_CKE_NCS_CA_PULL_DOWN,
&(ioregs_base->control_lpddr2ch1_1));
writel(DDR_IO_0_DDR2_DQ_INT_EN_ALL_DDR3_CA_DIS_ALL,
&(ioregs_base->control_ddrio_0));
writel(DDR_IO_1_DQ_OUT_EN_ALL_DQ_INT_EN_ALL,
&(ioregs_base->control_ddrio_1));
writel(DDR_IO_2_CA_OUT_EN_ALL_CA_INT_EN_ALL,
&(ioregs_base->control_ddrio_2));
}
/* DDR3 specific IO settings */
static void io_settings_ddr3(void)
{
u32 io_settings = 0;
struct omap_sys_ctrl_regs *ioregs_base =
(struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE;
writel(DDR_IO_I_40OHM_SR_SLOWEST_WD_DQ_NO_PULL_DQS_NO_PULL,
&(ioregs_base->control_ddr3ch1_0));
writel(DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL,
&(ioregs_base->control_ddrch1_0));
writel(DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL,
&(ioregs_base->control_ddrch1_1));
writel(DDR_IO_I_40OHM_SR_SLOWEST_WD_DQ_NO_PULL_DQS_NO_PULL,
&(ioregs_base->control_ddr3ch2_0));
writel(DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL,
&(ioregs_base->control_ddrch2_0));
writel(DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL,
&(ioregs_base->control_ddrch2_1));
writel(DDR_IO_0_VREF_CELLS_DDR3_VALUE,
&(ioregs_base->control_ddrio_0));
writel(DDR_IO_1_VREF_CELLS_DDR3_VALUE,
&(ioregs_base->control_ddrio_1));
writel(DDR_IO_2_VREF_CELLS_DDR3_VALUE,
&(ioregs_base->control_ddrio_2));
/* omap5432 does not use lpddr2 */
writel(0x0, &(ioregs_base->control_lpddr2ch1_0));
writel(0x0, &(ioregs_base->control_lpddr2ch1_1));
writel(SDRAM_CONFIG_EXT_RD_LVL_11_SAMPLES,
&(ioregs_base->control_emif1_sdram_config_ext));
writel(SDRAM_CONFIG_EXT_RD_LVL_11_SAMPLES,
&(ioregs_base->control_emif2_sdram_config_ext));
/* Disable DLL select */
io_settings = (readl(&(ioregs_base->control_port_emif1_sdram_config))
& 0xFFEFFFFF);
writel(io_settings,
&(ioregs_base->control_port_emif1_sdram_config));
io_settings = (readl(&(ioregs_base->control_port_emif2_sdram_config))
& 0xFFEFFFFF);
writel(io_settings,
&(ioregs_base->control_port_emif2_sdram_config));
}
/*
* Some tuning of IOs for optimal power and performance
*/
@ -115,25 +190,10 @@ void do_io_settings(void)
(sc_fast << 17) | (sc_fast << 14);
writel(io_settings, &(ioregs_base->control_smart3io_padconf_1));
/* LPDDR2 io settings */
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
&(ioregs_base->control_ddrch1_0));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
&(ioregs_base->control_ddrch1_1));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
&(ioregs_base->control_ddrch2_0));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_DQ_NO_PULL_DQS_PULL_DOWN,
&(ioregs_base->control_ddrch2_1));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_CK_CKE_NCS_CA_PULL_DOWN,
&(ioregs_base->control_lpddr2ch1_0));
writel(DDR_IO_I_34OHM_SR_FASTEST_WD_CK_CKE_NCS_CA_PULL_DOWN,
&(ioregs_base->control_lpddr2ch1_1));
writel(DDR_IO_0_DDR2_DQ_INT_EN_ALL_DDR3_CA_DIS_ALL,
&(ioregs_base->control_ddrio_0));
writel(DDR_IO_1_DQ_OUT_EN_ALL_DQ_INT_EN_ALL,
&(ioregs_base->control_ddrio_1));
writel(DDR_IO_2_CA_OUT_EN_ALL_CA_INT_EN_ALL,
&(ioregs_base->control_ddrio_2));
if (omap_revision() <= OMAP5430_ES1_0)
io_settings_lpddr2();
else
io_settings_ddr3();
/* Efuse settings */
writel(EFUSE_1, &(ioregs_base->control_efuse_1));

15
arch/arm/include/asm/arch-omap5/omap.h
View file

@ -179,7 +179,14 @@ struct omap_sys_ctrl_regs {
u32 control_srcomp_east_side; /*0x4A002E7C*/
u32 control_srcomp_west_side; /*0x4A002E80*/
u32 control_srcomp_code_latch; /*0x4A002E84*/
u32 pad4[3680198];
u32 pad4[3679394];
u32 control_port_emif1_sdram_config; /*0x4AE0C110*/
u32 control_port_emif1_lpddr2_nvm_config; /*0x4AE0C114*/
u32 control_port_emif2_sdram_config; /*0x4AE0C118*/
u32 pad5[10];
u32 control_emif1_sdram_config_ext; /* 0x4AE0C144 */
u32 control_emif2_sdram_config_ext; /* 0x4AE0C148 */
u32 pad6[789];
u32 control_smart1nopmio_padconf_0; /* 0x4AE0CDA0 */
u32 control_smart1nopmio_padconf_1; /* 0x4AE0CDA4 */
u32 control_padconf_mode; /* 0x4AE0CDA8 */
@ -234,6 +241,12 @@ struct omap_sys_ctrl_regs {
#define DDR_IO_1_DQ_OUT_EN_ALL_DQ_INT_EN_ALL 0x8421084
#define DDR_IO_2_CA_OUT_EN_ALL_CA_INT_EN_ALL 0x8421000
#define DDR_IO_I_40OHM_SR_SLOWEST_WD_DQ_NO_PULL_DQS_NO_PULL 0x7C7C7C6C
#define DDR_IO_I_40OHM_SR_FAST_WD_DQ_NO_PULL_DQS_NO_PULL 0x64646464
#define DDR_IO_0_VREF_CELLS_DDR3_VALUE 0xBAE8C631
#define DDR_IO_1_VREF_CELLS_DDR3_VALUE 0xBC6318DC
#define DDR_IO_2_VREF_CELLS_DDR3_VALUE 0x0
#define EFUSE_1 0x45145100
#define EFUSE_2 0x45145100
#define EFUSE_3 0x45145100