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 <[email protected]> > --- > 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. Shawn
