On Thu, Apr 14, 2022 at 9:10 AM Tim Harvey tharvey@gateworks.com wrote:
On Wed, Apr 13, 2022 at 10:21 AM Michael Nazzareno Trimarchi michael@amarulasolutions.com wrote:
Hi
On Wed, Apr 13, 2022 at 6:09 PM Tim Harvey tharvey@gateworks.com wrote:
On Wed, Apr 13, 2022 at 8:56 AM Michael Nazzareno Trimarchi michael@amarulasolutions.com wrote:
Hi Tim
On Wed, Apr 13, 2022 at 5:47 PM Tim Harvey tharvey@gateworks.com wrote:
Enable DM_SERIAL.
Signed-off-by: Tim Harvey tharvey@gateworks.com
v2: rebase on imx/master
configs/imx8mm_venice_defconfig | 2 ++ configs/imx8mn_venice_defconfig | 2 ++ 2 files changed, 4 insertions(+)
diff --git a/configs/imx8mm_venice_defconfig b/configs/imx8mm_venice_defconfig index dd61ec9b70fb..09f7d8a58ca7 100644 --- a/configs/imx8mm_venice_defconfig +++ b/configs/imx8mm_venice_defconfig @@ -110,6 +110,8 @@ CONFIG_SPL_DM_PMIC_MP5416=y CONFIG_DM_REGULATOR=y CONFIG_DM_REGULATOR_FIXED=y CONFIG_DM_REGULATOR_GPIO=y +CONFIG_DM_SERIAL=y +# CONFIG_SPL_DM_SERIAL is not set CONFIG_MXC_UART=y CONFIG_SYSRESET=y CONFIG_SPL_SYSRESET=y diff --git a/configs/imx8mn_venice_defconfig b/configs/imx8mn_venice_defconfig index c3a96a378553..41898da4aecf 100644 --- a/configs/imx8mn_venice_defconfig +++ b/configs/imx8mn_venice_defconfig @@ -108,6 +108,8 @@ CONFIG_SPL_DM_PMIC_MP5416=y CONFIG_DM_REGULATOR=y CONFIG_DM_REGULATOR_FIXED=y CONFIG_DM_REGULATOR_GPIO=y +CONFIG_DM_SERIAL=y +# CONFIG_SPL_DM_SERIAL is not set CONFIG_MXC_UART=y CONFIG_SYSRESET=y CONFIG_SPL_SYSRESET=y -- 2.17.1
Should not select in your board kconfig?
Michael,
I don't think it really matters. The other conversions to DM_SERIAL are going in defconfigs as well.
Do we know why without # CONFIG_SPL_DM_SERIAL is not set
board hang?
Michael,
yes, if I also enable CONFIG_SPL_DM_SERIAL I get no serial output and the board hangs even if I add 'u-boot,dm-pre-proper' to uart2/pinctrl_uart2 nodes.
I see that Peng has a series [1] that moves imx8mn_evk, imx8mm_evk, imx8mp_evk to DM_SERIAL and has figured out the hang.
I will re-submit the patch also enabling DM_SERIAL for SPL.
Best Regards,
Tim [1] https://patchwork.ozlabs.org/project/uboot/list/?series=294869
The requirement is to use DM_SERIAL in U-Boot, not in the SPL. I'm doing the same as was done for imx8mn-evk in ff1c7961d813 ("ARM: imx: imx8mn-evk: enable DM_SERIAL").
Thus far, no ARCH_IMX8M boards have enabled CONFIG_SPL_DM_SERIAL so I suppose others have run into this as well but again the requirement is to enable CONFIG_DM_SERIAL not necessarily the SPL.
Best Regards,
Tim