From: Shawn Guo <shawnguo@kernel.org>
To: Anson Huang <anson.huang@nxp.com>
Cc: "stefan.wahren@i2se.com" <stefan.wahren@i2se.com>,
"enric.balletbo@collabora.com" <enric.balletbo@collabora.com>,
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"s.hauer@pengutronix.de" <s.hauer@pengutronix.de>,
"will.deacon@arm.com" <will.deacon@arm.com>,
Abel Vesa <abel.vesa@nxp.com>,
"bjorn.andersson@linaro.org" <bjorn.andersson@linaro.org>,
Andy Gross <andy.gross@linaro.org>,
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Subject: Re: [PATCH 1/2] soc: imx-sc: add i.MX system controller soc driver support
Date: Sun, 21 Apr 2019 15:40:00 +0800 [thread overview]
Message-ID: <20190421073958.GC19962@dragon> (raw)
In-Reply-To: <1554965048-19450-1-git-send-email-Anson.Huang@nxp.com>
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.
Shawn
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next prev parent reply other threads:[~2019-04-21 7:40 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 ` Shawn Guo [this message]
2019-04-21 7:41 ` [PATCH 1/2] soc: imx-sc: add i.MX system controller soc driver support Shawn Guo
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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