On 10/31/2014 08:01 PM, Fabio Estevam wrote:
On Fri, Oct 31, 2014 at 1:08 AM, Peng Fan Peng.Fan@freescale.com wrote:
The PFUZ probe failed with the following msg: " wait_for_sr_state: failed sr=81 cr=a0 state=2020 i2c_init_transfer: failed for chip 0x8 retry=0 wait_for_sr_state: failed sr=81 cr=a0 state=2020 i2c_init_transfer: failed for chip 0x8 retry=1 wait_for_sr_state: failed sr=81 cr=a0 state=2020 i2c_init_transfer: failed for chip 0x8 retry=2 i2c_init_transfer: give up i2c_regs=021a0000 Can't find PMIC:PFUZE100 "
board_early_init_f is too early to call i2c related setting, because init_func_i2c is called after board_early_init_f being invoked. Thus move setup_i2c into board_init.
Also PFUZ is connected to I2C bus 0, so change "1" -> "0".
Using this patch PFUZ can be correctly probed: "PMIC: PFUZE100 ID=0x11"
Signed-off-by: Peng Fan Peng.Fan@freescale.com
Maybe this is a difference between RevA versus RevB board?
I checked SCH-27962 REV A and SCH-27962 REV B. There is no different to I2C part. PMIC is connected to the first I2C bus. You can check page 22.
I have a RevA and PMIC works fine here:
I tried on RevA and RevB. Both can not work. The following is the msg on RevA:
U-Boot 2014.10-00435-g571bdf1 (Nov 01 2014 - 07:39:47)
CPU: Freescale i.MX6SX rev1.0 at 792 MHz Reset cause: POR Board: MX6SX SABRE SDB I2C: ready DRAM: 1 GiB MMC: FSL_SDHC: 0 *** Warning - bad CRC, using default environment
In: serial Out: serial Err: serial wait_for_sr_state: failed sr=81 cr=a0 state=2020 i2c_init_transfer: failed for chip 0x8 retry=0 wait_for_sr_state: failed sr=81 cr=a0 state=2020 i2c_init_transfer: failed for chip 0x8 retry=1 wait_for_sr_state: failed sr=81 cr=a0 state=2020 i2c_init_transfer: failed for chip 0x8 retry=2 i2c_init_transfer: give up i2c_regs=021a0000 Can't find PMIC:PFUZE100 Net: FEC [PRIME] Hit any key to stop autoboot: 0
After applying this patch, all is fine. I am not sure whether your board has been reworked. But PMIC is connected to the first I2C bus, thus I think setup_i2c(0,xxxx) is correct, but not setup_i2c(1,xxx). And I think it is too early to call setup_i2c in board_early_init_f.
U-Boot 2014.10-rc2-17115-g718b923 (Sep 30 2014 - 14:03:24)
CPU: Freescale i.MX6SX rev1.0 at 792 MHz Reset cause: WDOG Board: MX6SX SABRE SDB I2C: ready DRAM: 1 GiB MMC: FSL_SDHC: 0 In: serial Out: serial Err: serial PMIC: PFUZE100 ID=0x10 Net: FEC [PRIME] Hit any key to stop autoboot: 0 =>
=> pmic PFUZE100 dump PMIC: PFUZE100
0x00: 00000010 00000000 00000000 00000021 00000000 00000001 0000003f 00000001 0x08: 00000000 0000007f 00000000 00000000 00000000 00000000 00000000 00000081 0x10: 00000000 00000000 0000003f 00000000 00000000 00000000 00000000 00000000 0x18: 00000000 00000000 00000000 00000010 00000000 00000000 00000000 00000000 0x20: 0000002b 0000001b 0000002b 00000008 00000044 00000000 00000000 00000000 0x28: 00000000 00000000 00000000 00000000 00000000 00000000 0000002b 0000001b 0x30: 0000002b 00000008 00000044 00000000 00000000 00000072 00000072 00000072 0x38: 00000008 00000054 00000000 00000000 00000026 00000026 00000026 00000008 0x40: 00000064 00000000 00000000 00000026 00000026 00000026 00000008 00000064 0x48: 00000000 00000000 00000038 00000038 00000038 00000008 00000074 00000000 0x50: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0x58: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0x60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0x68: 00000000 00000000 00000010 00000006 00000018 0000000e 0000001a 00000010 0x70: 0000001f 0000001c 00000000 00000000 00000000 00000000 00000000 00000000 0x78: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 =>