Hello TI
u-boot (2015 7)
I have a problem with i2c. Because tps65910 is on i2c1, so I need add
else {
int sil_rev;
/*
* The GP EVM, IDK and EVM SK use a TPS65910 PMIC. For all
* MPU frequencies we support we use a CORE voltage of
* 1.1375V. For MPU voltage we need to switch based on
* the frequency we are running at.
*/
i2c_set_bus_num(1);
if (i2c_probe(TPS65910_CTRL_I2C_ADDR))
return;
/*
* Depending on MPU clock and PG we will need a different
* VDD to drive at that speed.
*/
sil_rev = readl(&cdev->deviceid) >> 28;
mpu_vdd = am335x_get_tps65910_mpu_vdd(sil_rev,
dpll_mpu_opp100.m);
/* Tell the TPS65910 to use i2c */
tps65910_set_i2c_control();
/* First update MPU voltage. */
if (tps65910_voltage_update(MPU, mpu_vdd))
return;
/* Second, update the CORE voltage. */
if (tps65910_voltage_update(CORE, TPS65910_OP_REG_SEL_1_1_3))
return;
/* Set CORE Frequencies to OPP100 */
do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
}
/* Set MPU Frequency to what we detected now that voltages are set */
do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
to let it pass to set core opp100, if we skip this step, there are no ethernet to use.
=====================================================================================
We retain this revise, and use sd card to boot, there are work fine, but if we flash MLO to nand, there is error occured:
SD card boot:
U-Boot SPL 2015.07 (Oct 22 2015 - 16:25:51)
reading args
spl_load_image_fat_os: error reading image args, err - -1
reading u-boot.img
reading u-boot.img
NAND boot:
U-Boot SPL 2015.07 (Oct 22 2015 - 16:25:5)
Timed out in wait_for_event: status=1100
Check if pads/pull-ups of bus 1 are properly configured
Timed out in wait_for_bb: status=1000
The Expected Linux image was not found. Please check your NAND configuration.
Trying to start u-boot now...
We add some logs, it is not passing to set core opp100, so I indeed have no ehternet to use.
I tried add
+enable_i2c1_pin_mux();
i2c_set_bus_num(1);
+i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, 2);
This issue is still persisted. I need some suggestion. Thank you.
