U-Boot: wandboard ethernet problem with newest mainline
Heiko Schocher
hs at denx.de
Thu Jan 9 09:25:52 CET 2020
Hello Fabio,
Am 08.01.2020 um 21:26 schrieb Fabio Estevam:
> Hi Heiko,
>
> On Wed, Jan 8, 2020 at 4:52 PM Fabio Estevam <festevam at gmail.com> wrote:
>
>> The support for imx6q-wandboard-revd1 and imx6dl-wandboard-revd1 still
>> needs to be added (it used to work prior to the DM conversion as you
>> noticed), but unfortunately I don't have access to these variants.
>
> Could you please try the attached two patches?
You were faster than I, thanks!
> I don't have access to a imx6dl-wandboard-revd1 board, but hopefully
> these two patches would make it to work.
Unfortunately they don;t work.
> It applies against the latest u-boot-imx tree.
Tried mainline also as u-boot-imx.
But! Additionally setting:
CONFIG_DEFAULT_DEVICE_TREE="imx6dl-wandboard-revd1"
CONFIG_OF_LIST="imx6dl-wandboard-revd1"
and U-Boot works again, see [1]!
So we are on the correct direction...
Hmm.. I wonder ... if you want to detect the revd1, you must
access the pmic in SPL, so you need a DTS in which it is
configured, also DM PMIC support in SPL ... which introduces a
lot of dependencies starting with enabling CONFIG_SPL_DM and
blows up SPL ... :-(
2 problems I see:
- reorder board_fit_config_name_match
see attached patch: 0001-wandboard-reorder-board_fit_config_name_match.patch
With this patch (based on your patches) and hack [2] U-Boot works also again.
- detect rev D1 board (remaining problem)
board_fit_config_name_match() is called from board_fit_config_name_match,
so from SPL where you have no access (yet?) to pmic_get(), and so
is_revd1() is always 0 -> which leads to wrong DTB selection.
First question: other possibility to detect revision D1 ?
may only probing the chip is enough ?
Should we use instead CONFIG_DTB_RESELECT ?
This is the way to go I think, added patches:
0002-wandboard-enable-CONFIG_DTB_RESELECT.patch
0003-wandboard-use-imx6dl-wandboard-revd1-as-default-DTB.patch
0004-wandboard-add-u-boot-specific-wandboard-revd1-u-boot.patch
0005-wandboard-in-SPL-use-only-D1-DTB.patch
with them, after a soft reset all works fine, see [3] but
on power on I see [4] :-(
Any idea, why after a power on, pmic does not work?
Uff... sorry for the long email ... and may dummy questions.
bye,
Heiko
[1]
U-Boot SPL 2020.01-tbot-00002-g6cd56d3 (Jan 09 2020 - 06:21:00 +0100)
Trying to boot from MMC1
U-Boot 2020.01-tbot-00002-g6cd56d3 (Jan 09 2020 - 06:21:00 +0100)
CPU: Freescale i.MX6DL rev1.3 at 792 MHz
Reset cause: WDOG
DRAM: 1 GiB
PMIC: PFUZE100 ID=0x10
MMC: FSL_SDHC: 2, FSL_SDHC: 1, FSL_SDHC: 0
Loading Environment from MMC... *** Warning - bad CRC, using default environment
No panel detected: default to HDMI
Display: HDMI (1024x768)
In: serial
Out: serial
Err: serial
Model: Wandboard i.MX6 Dual Lite Board revD1
Board: Wandboard rev D1
Net:
Warning: ethernet at 2188000 using MAC address from ROM
eth0: ethernet at 2188000
Hit any key to stop autoboot: 0
=>
[2] hack for is_revd1()
diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c
index 4cb9bf6..5c64ab5 100644
--- a/board/wandboard/wandboard.c
+++ b/board/wandboard/wandboard.c
@@ -414,6 +414,7 @@ static bool is_revc1(void)
static bool is_revd1(void)
{
+ with_pmic = 1;
if (with_pmic)
return true;
else
[3] softreset with patches 1-5
U-Boot SPL 2020.01-tbot-00007-g44f7a02 (Jan 09 2020 - 09:00:27 +0100)
Trying to boot from MMC1
U-Boot 2020.01-tbot-00007-g44f7a02 (Jan 09 2020 - 09:00:27 +0100)
CPU: Freescale i.MX6DL rev1.3 at 792 MHz
Reset cause: WDOG
PMIC: PFUZE100 ID=0x10
DRAM: 1 GiB
PMIC: PFUZE100 ID=0x10
MMC: FSL_SDHC: 2, FSL_SDHC: 1, FSL_SDHC: 0
Loading Environment from MMC... *** Warning - bad CRC, using default environment
No panel detected: default to HDMI
Display: HDMI (1024x768)
In: serial
Out: serial
Err: serial
Model: Wandboard i.MX6 Dual Lite Board revD1
Board: Wandboard rev D1
Net:
Warning: ethernet at 2188000 using MAC address from ROM
eth0: ethernet at 2188000
Hit any key to stop autoboot: 0
=>
[4] hard power on
U-Boot SPL 2020.01-tbot-00007-g44f7a02 (Jan 09 2020 - 09:00:27 +0100)
Trying to boot from MMC1
U-Boot 2020.01-tbot-00007-g44f7a02 (Jan 09 2020 - 09:00:27 +0100)
CPU: Freescale i.MX6DL rev1.3 at 792 MHz
Reset cause: POR
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=0x21a8000
read error from device: 0093e358 register: 0x0!
pmic_reg_read() ret -5
DRAM: 1 GiB
PMIC: PFUZE100 ID=0x10
[...]
--
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