Hi, Shawn Best Regards! Anson Huang
> -----Original Message----- > From: Shawn Guo [mailto:[email protected]] > Sent: Sunday, April 21, 2019 3:42 PM > To: Anson Huang <[email protected]> > Cc: [email protected]; [email protected]; linux- > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; > [email protected]; [email protected]; Abel Vesa > <[email protected]>; [email protected]; Andy Gross > <[email protected]>; [email protected]; > [email protected]; dl-linux-imx <[email protected]>; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected]; [email protected] > Subject: Re: [PATCH 1/2] soc: imx-sc: add i.MX system controller soc driver > support > > 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 <[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. > > Forgot to give pointer to Abel's driver. > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.ker > nel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Fshawnguo%2Flinux.git% > 2Fcommit%2F%3Fh%3Dimx%2Fdrivers%26id%3Da7e26f356ca12906a164d83c > 9e9f8527ee7da022&data=02%7C01%7Canson.huang%40nxp.com%7C9 > e2705d7449b4c2e23ed08d6c62ce0bb%7C686ea1d3bc2b4c6fa92cd99c5c3016 > 35%7C0%7C0%7C636914293400307709&sdata=6ySEs%2B4SE8bvcBCkfoi > VBafseAYthTED9%2F5qcf25xds%3D&reserved=0 > Got it, I didn't notice that this patch bas been accepted, I will redo the patch based on it, thanks. Anson. > Shawn
