On Sun, Apr 21, 2019 at 03:40:00PM +0800, Shawn Guo wrote: > On Thu, Apr 11, 2019 at 06:49:12AM +0000, Anson Huang wrote: > > i.MX8QXP is an ARMv8 SoC which has a Cortex-M4 system controller > > inside, the system controller is in charge of controlling power, > > clock and fuse etc.. > > > > This patch adds i.MX system controller soc driver support, > > Linux kernel has to communicate with system controller via MU > > (message unit) IPC to get soc revision, uid etc.. > > > > With this patch, soc info can be read from sysfs: > > > > i.mx8qxp-mek# cat /sys/devices/soc0/family > > Freescale i.MX > > > > i.mx8qxp-mek# cat /sys/devices/soc0/soc_id > > i.MX8QXP > > > > i.mx8qxp-mek# cat /sys/devices/soc0/machine > > Freescale i.MX8QXP MEK > > > > i.mx8qxp-mek# cat /sys/devices/soc0/revision > > 1.1 > > > > i.mx8qxp-mek# cat /sys/devices/soc0/soc_uid > > 7B64280B57AC1898 > > > > Signed-off-by: Anson Huang <anson.hu...@nxp.com> > > --- > > drivers/soc/imx/Kconfig | 7 ++ > > drivers/soc/imx/Makefile | 1 + > > drivers/soc/imx/soc-imx-sc.c | 220 > > +++++++++++++++++++++++++++++++++++++++++++ > > 3 files changed, 228 insertions(+) > > create mode 100644 drivers/soc/imx/soc-imx-sc.c > > Rather than creating a new driver, please take a look at Abel's generic > i.MX8 SoC driver, and see if it can be extended to cover i.MX8QXP.
Forgot to give pointer to Abel's driver. https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git/commit/?h=imx/drivers&id=a7e26f356ca12906a164d83c9e9f8527ee7da022 Shawn
