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netbird_v2: Do a correct enable of the external USB PWR 

The external USB Port needs to power on first the Regulator and then
enable the Load Switch.
This commit is contained in:
Stefan Eichenberger 2016-12-27 12:05:59 +01:00
parent 4413b6d2b6
commit 7a6e5f10f8
1 changed files with 13 additions and 1 deletions
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14
board/nm/netbird_v2/board.c
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@ -58,6 +58,7 @@ DECLARE_GLOBAL_DATA_PTR;
#define NETBIRD_GPIO_LED_A GPIO_TO_PIN(1, 14)
#define NETBIRD_GPIO_LED_B GPIO_TO_PIN(1, 15)
#define NETBIRD_GPIO_RESET_BUTTON GPIO_TO_PIN(0, 2)
#define NETBIRD_GPIO_USB_PWR_EN GPIO_TO_PIN(1, 27)
#define DDR3_CLOCK_FREQUENCY (400)
@ -154,7 +155,6 @@ void am33xx_spl_board_init(void)
puts ("tps65218_reg_write failure (DCDC2 disable)\n");
};
/* Set MPU Frequency to what we detected now that voltages are set */
do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
@ -332,12 +332,24 @@ int board_init(void)
REQUEST_AND_SET_GPIO(NETBIRD_GPIO_RST_PHY_N);
REQUEST_AND_CLEAR_GPIO(NETBIRD_GPIO_WLAN_EN);
REQUEST_AND_CLEAR_GPIO(NETBIRD_GPIO_BT_EN);
REQUEST_AND_SET_GPIO(NETBIRD_GPIO_USB_PWR_EN);
/* There are two funcions on the same mux mode for MMC2_DAT7 we want
* to use RMII2_CRS_DV so we need to set SMA2 Register to 1
* See SPRS717J site 49 (10)*/
#define SMA2_REGISTER (CTRL_BASE + 0x1320)
writel(0x01, SMA2_REGISTER); /* Select RMII2_CRS_DV instead of MMC2_DAT7 */
/* Configure 500mA on LS2 */
if (tps65218_reg_write(TPS65218_PROT_LEVEL_2, TPS65218_CONFIG2, 0x02, 0x03)) {
puts ("tps65218_reg_write failure (LS2 enable)\n");
};
/* Enable LS2 */
if (tps65218_reg_write(TPS65218_PROT_LEVEL_2, TPS65218_ENABLE2, 0x04, 0x04)) {
puts ("tps65218_reg_write failure (LS2 enable)\n");
};
printf("OSC: %lu Hz\n", get_osclk());
return 0;