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nmhw21: prepare Ethernet v2.0 initialization

This commit is contained in:
Rene Straub 2018-11-02 18:24:19 +01:00
parent 7fda5662f3
commit a0bd4715b0
1 changed files with 50 additions and 16 deletions
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66
board/nm/nmhw21/board.c
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@ -134,6 +134,14 @@ DECLARE_GLOBAL_DATA_PTR;
#define DDR3_CLOCK_FREQUENCY (400)
#if !defined(CONFIG_SPL_BUILD)
/* Hardware version information of mainboard, loaded by get_hw_version() */
static int hw_ver = -1;
static int hw_rev = -1;
static int hw_patch = -1;
#endif
#if !defined(CONFIG_SPL_BUILD)
static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
#endif
@ -459,13 +467,31 @@ void sdram_init(void)
static void init_ethernet(void)
{
REQUEST_AND_CLEAR_GPIO(GPIO_RST_ETH_N);
REQUEST_AND_CLEAR_GPIO(GPIO_RST_ETH_SW_N);
/* Minimum Reset Pulse = 5us (switch), 20us (TJA1100), 100us (SMSC8720) */
mdelay(1);
gpio_set_value(GPIO_RST_ETH_N, 1);
}
static void init_ethernet_switch(void)
static void init_ethernet_v2(void)
{
/* Put switch and PHYs in reset */
REQUEST_AND_CLEAR_GPIO(GPIO_RST_ETH_N);
REQUEST_AND_CLEAR_GPIO(GPIO_RST_ETH_SW_N);
/* Take switch out of reset. Minimum Reset Pulse = 5us */
mdelay(1);
gpio_set_value(GPIO_RST_ETH_SW_N, 1);
}
static void init_ethernet_phys_v2(void)
{
/* Take Ethernet PHYs out of reset */
/* Minimum Reset Pulse = 20us (TJA1102), 100us (SMSC8720) */
mdelay(1);
gpio_set_value(GPIO_RST_ETH_N, 1);
}
static void configure_ethernet_switch(void)
{
static struct spi_slave *spi = 0;
@ -678,14 +704,15 @@ static void set_root_partition(void)
static void get_hw_version(void)
{
int hw_ver, hw_rev;
char hw_versions[16];
char new_env[256]; /* current bootargs = 84 bytes */
bd_get_hw_version(&hw_ver, &hw_rev);
bd_get_hw_patch(&hw_patch);
printf("MB: V%d.%d\n", hw_ver, hw_rev);
/* add hardware versions to environment */
/* TODO: Remove ! */
snprintf(hw_versions, sizeof(hw_versions), "CP=%d.%d", hw_ver, hw_rev);
snprintf(new_env, sizeof(new_env), "setenv bootargs $bootargs %s", hw_versions);
setenv("add_version_bootargs", new_env);
@ -870,15 +897,26 @@ int board_late_init(void)
* PHY also properly bootstrapped.
* Should be reworked by giving switch a dedicated reset line
*/
if (hw_ver == 1) {
init_ethernet();
configure_ethernet_switch();
/* FIXME: Reset ETH system again to pin strap PHY */
mdelay(10);
gpio_set_value(GPIO_RST_ETH_N, 0);
mdelay(10);
gpio_set_value(GPIO_RST_ETH_N, 1);
configure_ethernet_switch();
}
else {
/* TODO: Verify operation */
init_ethernet_v2();
configure_ethernet_switch();
init_ethernet();
init_ethernet_switch();
/* FIXME: Reset ETH system again to pin strap PHY */
mdelay(10);
gpio_set_value(GPIO_RST_ETH_N, 0);
mdelay(10);
gpio_set_value(GPIO_RST_ETH_N, 1);
init_ethernet_switch();
/* Now that Ethernet switch is working, PHY clocks are present.
* Take PHYs out of reset.
*/
init_ethernet_phys_v2();
}
init_usb_hub();
init_user_module();
@ -1019,17 +1057,13 @@ int board_fit_config_name_match(const char *name)
}
#endif
#if defined(CONFIG_OF_BOARD_SETUP)
#if defined(CONFIG_OF_BOARD_SETUP) && !defined(CONFIG_SPL_BUILD)
static void ft_hw_version(void *blob)
{
int node_offset;
int hw_ver, hw_rev, hw_patch;
char hw_version[16];
bd_get_hw_version(&hw_ver, &hw_rev);
bd_get_hw_patch(&hw_patch);
snprintf(hw_version, sizeof(hw_version), "%d.%d.%d", hw_ver, hw_rev, hw_patch);
node_offset = fdt_path_offset(blob, "/");