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[iot] Move i2c_setup calls to board_init 

i2c_setup calls force_idle_bus which calls
get_timer if SDA and SCL are not high. On the Pico
baseboard there are level shifters that pull SDA
and SCL high, but the test harness does not have
pull-ups on these lines. Because
board_early_init_f is called before timer_init the
call to get_timer was causing a divide-by-zero
error due to CNTFRQ not being initialized. Moving
the i2c_setup calls to board_init fixes this
issue. power_init_board (which uses I2C to
configure the PMIC) is called after board_init, so
this should be safe.

Bug:
Test: PMIC registers are read correctly on both
      boards (DEV_ID=0x30 REV_ID=0x11)
Test: iMX7D SOM boots on Pico baseboard
Test: iMX7D SOM boots on test harness
Change-Id: Iecdd28f3177fe915a3b614565d8dfa6e20e6a842
This commit is contained in:
Braden Kell 2018-06-04 15:44:36 -07:00 committed by Ji Luo
parent 91178a326f
commit 89e54e221c
1 changed files with 6 additions and 7 deletions
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13
board/technexion/pico-imx7d/pico-imx7d.c
View File

@ -544,13 +544,6 @@ void board_late_mmc_init(void)
int board_early_init_f(void)
{
setup_iomux_uart();
#ifdef CONFIG_SYS_I2C_MXC
setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
setup_i2c(3, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info4);
#endif
return 0;
}
@ -566,6 +559,12 @@ int board_init(void)
setup_fec();
#endif
#ifdef CONFIG_SYS_I2C_MXC
setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
setup_i2c(3, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info4);
#endif
//pico-imx7 custom initialize
imx_iomux_v3_setup_multiple_pads(bcm4339_pads, ARRAY_SIZE(bcm4339_pads));
imx_iomux_v3_setup_multiple_pads(ccm_clko_pads, ARRAY_SIZE(ccm_clko_pads));