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| author | Wayne Zou <b36644@freescale.com> | 2011-08-24 15:53:46 +0800 |
|---|---|---|
| committer | Wayne Zou <b36644@freescale.com> | 2011-08-31 17:13:04 +0800 |
| commit | a9cced4ea28c4fda8550745bb10bebc7a93df408 (patch) | |
| tree | dff050158219b81f850a9858d4787543321cc239 /board/freescale | |
| parent | 190451ad69f8d1f34806c8bc1c602dd387666f1e (diff) | |
| download | u-boot-imx-a9cced4ea28c4fda8550745bb10bebc7a93df408.zip u-boot-imx-a9cced4ea28c4fda8550745bb10bebc7a93df408.tar.gz u-boot-imx-a9cced4ea28c4fda8550745bb10bebc7a93df408.tar.bz2 | |
ENGR00155284 mx53_smd: move I2C access to board_init_late for system hang issue
MX53 SMD hangs if reset many times with lower possibility.
If doing I2C access in early time, I2C may cause system hangs.
So moving I2C access to late phase to make system hang issue disappear.
QA Test result: QA raised 6 full rounds of CTS one-round test
Totally ran for 6 rounds about 27 hours, reboot for 56*6=336 times,
no reboot failure occurred.
Signed-off-by: Wayne Zou <b36644@freescale.com>
Diffstat (limited to 'board/freescale')
| -rw-r--r-- | board/freescale/mx53_smd/mx53_smd.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/board/freescale/mx53_smd/mx53_smd.c b/board/freescale/mx53_smd/mx53_smd.c index 0ced293..a1e5c5c 100644 --- a/board/freescale/mx53_smd/mx53_smd.c +++ b/board/freescale/mx53_smd/mx53_smd.c @@ -414,8 +414,12 @@ void setup_pmic_voltages(void) /* increase VDDGP as 1.25V for 1GHZ */ value = 0x5e; do { - if (0 == i2c_write(0x48, 0x2e, 1, &value, 1)) + if (0 != i2c_write(0x48, 0x2e, 1, &value, 1)) { + printf("da9052_i2c_is_connected - i2c write failed.....\n"); + } else { + printf("da9052_i2c_is_connected - i2c write success....\n"); ret = 0; + } } while (ret != 0 && retries--); i2c_read(0x48, 60, 1, &value, 1); value |= 0x1; @@ -834,14 +838,6 @@ int board_init(void) setup_fec(); #endif -#ifdef CONFIG_I2C_MXC - setup_i2c(CONFIG_SYS_I2C_PORT); - /* Increase VDDGP voltage */ - setup_pmic_voltages(); - /* Switch to 1GHZ */ - clk_config(CONFIG_REF_CLK_FREQ, 1000, CPU_CLK); -#endif - #if defined(CONFIG_DWC_AHSATA) setup_sata_device(); #endif @@ -984,6 +980,13 @@ int check_recovery_cmd_file(void) int board_late_init(void) { +#ifdef CONFIG_I2C_MXC + setup_i2c(CONFIG_SYS_I2C_PORT); + /* Increase VDDGP voltage */ + setup_pmic_voltages(); + /* Switch to 1GHZ */ + clk_config(CONFIG_REF_CLK_FREQ, 1000, CPU_CLK); +#endif return 0; } |