u-boot/board/ti/ks2_evm/board_k2e.c
Lokesh Vutla ee3c6532be ARM: keystone2: Add support for getting external clock dynamically
One some keystone2 platforms like K2G ICE, there is an option
to switch between 24MHz or 25MHz as sysclk. But the existing
driver assumes it is always 24MHz. Add support for getting
all reference clocks dynamically by reading boot pins.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-08 12:34:29 -04:00

183 lines
3.5 KiB
C

/*
* K2E EVM : Board initialization
*
* (C) Copyright 2014
* Texas Instruments Incorporated, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/ddr3.h>
#include <asm/arch/hardware.h>
#include <asm/ti-common/keystone_net.h>
DECLARE_GLOBAL_DATA_PTR;
unsigned int get_external_clk(u32 clk)
{
unsigned int clk_freq;
switch (clk) {
case sys_clk:
clk_freq = 100000000;
break;
case alt_core_clk:
clk_freq = 100000000;
break;
case pa_clk:
clk_freq = 100000000;
break;
case ddr3a_clk:
clk_freq = 100000000;
break;
default:
clk_freq = 0;
break;
}
return clk_freq;
}
static struct pll_init_data core_pll_config[NUM_SPDS] = {
[SPD800] = CORE_PLL_800,
[SPD850] = CORE_PLL_850,
[SPD1000] = CORE_PLL_1000,
[SPD1250] = CORE_PLL_1250,
[SPD1350] = CORE_PLL_1350,
[SPD1400] = CORE_PLL_1400,
[SPD1500] = CORE_PLL_1500,
};
/* DEV and ARM speed definitions as specified in DEVSPEED register */
int speeds[DEVSPEED_NUMSPDS] = {
SPD850,
SPD1000,
SPD1250,
SPD1350,
SPD1400,
SPD1500,
SPD1400,
SPD1350,
SPD1250,
SPD1000,
SPD850,
SPD800,
};
s16 divn_val[16] = {
0, 0, 1, 4, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
static struct pll_init_data pa_pll_config =
PASS_PLL_1000;
struct pll_init_data *get_pll_init_data(int pll)
{
int speed;
struct pll_init_data *data;
switch (pll) {
case MAIN_PLL:
speed = get_max_dev_speed(speeds);
data = &core_pll_config[speed];
break;
case PASS_PLL:
data = &pa_pll_config;
break;
default:
data = NULL;
}
return data;
}
#ifdef CONFIG_DRIVER_TI_KEYSTONE_NET
struct eth_priv_t eth_priv_cfg[] = {
{
.int_name = "K2E_EMAC0",
.rx_flow = 0,
.phy_addr = 0,
.slave_port = 1,
.sgmii_link_type = SGMII_LINK_MAC_PHY,
.phy_if = PHY_INTERFACE_MODE_SGMII,
},
{
.int_name = "K2E_EMAC1",
.rx_flow = 8,
.phy_addr = 1,
.slave_port = 2,
.sgmii_link_type = SGMII_LINK_MAC_PHY,
.phy_if = PHY_INTERFACE_MODE_SGMII,
},
{
.int_name = "K2E_EMAC2",
.rx_flow = 16,
.phy_addr = 2,
.slave_port = 3,
.sgmii_link_type = SGMII_LINK_MAC_MAC_FORCED,
.phy_if = PHY_INTERFACE_MODE_SGMII,
},
{
.int_name = "K2E_EMAC3",
.rx_flow = 24,
.phy_addr = 3,
.slave_port = 4,
.sgmii_link_type = SGMII_LINK_MAC_MAC_FORCED,
.phy_if = PHY_INTERFACE_MODE_SGMII,
},
{
.int_name = "K2E_EMAC4",
.rx_flow = 32,
.phy_addr = 4,
.slave_port = 5,
.sgmii_link_type = SGMII_LINK_MAC_MAC_FORCED,
.phy_if = PHY_INTERFACE_MODE_SGMII,
},
{
.int_name = "K2E_EMAC5",
.rx_flow = 40,
.phy_addr = 5,
.slave_port = 6,
.sgmii_link_type = SGMII_LINK_MAC_MAC_FORCED,
.phy_if = PHY_INTERFACE_MODE_SGMII,
},
{
.int_name = "K2E_EMAC6",
.rx_flow = 48,
.phy_addr = 6,
.slave_port = 7,
.sgmii_link_type = SGMII_LINK_MAC_MAC_FORCED,
.phy_if = PHY_INTERFACE_MODE_SGMII,
},
{
.int_name = "K2E_EMAC7",
.rx_flow = 56,
.phy_addr = 7,
.slave_port = 8,
.sgmii_link_type = SGMII_LINK_MAC_MAC_FORCED,
.phy_if = PHY_INTERFACE_MODE_SGMII,
},
};
int get_num_eth_ports(void)
{
return sizeof(eth_priv_cfg) / sizeof(struct eth_priv_t);
}
#endif
#if defined(CONFIG_BOARD_EARLY_INIT_F)
int board_early_init_f(void)
{
init_plls();
return 0;
}
#endif
#ifdef CONFIG_SPL_BUILD
void spl_init_keystone_plls(void)
{
init_plls();
}
#endif