[meta-freescale] LS1012A USB 2.0

[Zhenhua Luo]

Best Regards,

Zhenhua

From: meta-freescale-bounces at yoctoproject.org <meta-freescale-bounces at yoctoproject.org> On Behalf Of Tim Hammer
Sent: Monday, September 10, 2018 11:41 AM
To: meta-freescale at yoctoproject.org
Subject: [meta-freescale] LS1012A USB 2.0


On a board design based on the LS1012A Freedom board, we added a USB 2.0 connection (in addition to the USB 3.0 included on the Freedom board).

I have run into a challenge building the Linux kernel driver to support the ULPI connection.

With CONFIG_USB_EHCI_FSL defined, the code will not build because CONFIG_PM is defined and causes drivers/usb/host/ehci-fsl.c to try and pull in asm/fsl_pm.h which is not provided for qoriq (only for powerpc!).

CONFIG_PM is:

•         not in arch/arm64/configs/defconfig (which I am pretty sure is used as the “base” for make defconfig in meta-freescale/recipes-kernel/linux/linux-qoriq_4.14.bb<https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flinux-qoriq_4.14.bb%2F&data=02%7C01%7Czhenhua.luo%40nxp.com%7C979924ffd21d46edc99508d616cf45d8%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C636721476826179512&sdata=bqnBBZuT1J9PnL7kN7hXQn8ofjVeaQZP1Dn%2BRzI4V9c%3D&reserved=0>)

•         nor is it in arch/arm64/configs/lsdk.config (which I am pretty sure is the DELTA_KERNEL_DEFCONFIG used in meta-freescale/recipes-kernel/linux/linux-qoriq_4.14.bb<https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flinux-qoriq_4.14.bb%2F&data=02%7C01%7Czhenhua.luo%40nxp.com%7C979924ffd21d46edc99508d616cf45d8%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C636721476826179512&sdata=bqnBBZuT1J9PnL7kN7hXQn8ofjVeaQZP1Dn%2BRzI4V9c%3D&reserved=0>)

•         nor can I find it in any Kconfig in the linux-qoriq source tree

Even so, it ends up in the .config file created when I build the linux-qoriq recipe.

Can anyone point out what I am missing that results in CONFIG_PM getting defined?

I have put in a workaround to #undef CONFIG_PM in ehci-fsl.c and am now able to get the second USB 2.0 bus, but I would like to find the "root source" to patch if I can.

Thanks!

--

.Tim
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