From: Shawn Guo <shawnguo@kernel.org>
To: Anson Huang <anson.huang@nxp.com>
Cc: "stefan.wahren@i2se.com" <stefan.wahren@i2se.com>,
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<linux-arm-kernel@lists.infradead.org>,
Abel Vesa <abel.vesa@nxp.com>
Subject: Re: [PATCH 1/2] soc: imx-sc: add i.MX system controller soc driver support
Date: Sun, 21 Apr 2019 15:41:54 +0800 [thread overview]
Message-ID: <20190421074152.GD19962@dragon> (raw)
In-Reply-To: <20190421073958.GC19962@dragon>
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.Huang@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
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next prev parent reply other threads:[~2019-04-21 7:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-11 6:49 [PATCH 1/2] soc: imx-sc: add i.MX system controller soc driver support Anson Huang
2019-04-11 6:49 ` [PATCH 2/2] defconfig: arm64: add i.MX system controller SoC support Anson Huang
2019-04-21 7:40 ` [PATCH 1/2] soc: imx-sc: add i.MX system controller soc driver support Shawn Guo
2019-04-21 7:41 ` Shawn Guo [this message]
2019-04-22 0:51 ` Anson Huang
2019-04-22 6:46 ` Anson Huang
2019-04-22 8:48 ` Leonard Crestez
2019-05-10 2:42 ` Shawn Guo
2019-05-10 7:30 ` Abel Vesa
2019-05-10 9:17 ` Aisheng Dong
2019-05-10 11:15 ` Anson Huang
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