LKML Archive on
help / color / mirror / Atom feed
From: John Garry <>
To: <>
Cc: <>, <>,
	<>, <>,
	<>, <>,
	<>, <>,
	<>, <>,
	<>, <>, <>,
	<>, John Garry <>
Subject: [PATCH v2] HISI LPC: Add Kconfig MFD_CORE dependency
Date: Thu, 19 Apr 2018 22:14:02 +0800	[thread overview]
Message-ID: <> (raw)

For ACPI support of the HiSilicon LPC driver we depend
on MFD_CORE config.

Currently the HiSi LPC Kconfig entry does not define this
dependency, so add it.

The reason for depending on MFD_CORE in the driver is
that we model the LPC host as an MFD, in that a platform
device will be created for each device on the bus. 

We do this as we need to modify the resources of these
derived platform devices, something which we should not
do to the original devices created in the ACPI scan.
Details in e0aa1563f894 ("HISI LPC: Add ACPI support").

Fixes: e0aa1563f894 ("HISI LPC: Add ACPI support")
Reported-and-tested-by: Tan Xiaojun <>
Signed-off-by: John Garry <>

v1->v2 change:
- add details of reasong to use MFD to commit message

diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index d1c0b60..6dc177b 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -33,6 +33,7 @@ config HISILICON_LPC
 	bool "Support for ISA I/O space on HiSilicon Hip06/7"
 	depends on ARM64 && (ARCH_HISI || COMPILE_TEST)
+	select MFD_CORE if ACPI
 	  Driver to enable I/O access to devices attached to the Low Pin
 	  Count bus on the HiSilicon Hip06/7 SoC.

             reply	other threads:[~2018-04-19 14:14 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-19 14:14 John Garry [this message]
2018-04-26 14:53 ` Arnd Bergmann

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
    --subject='Re: [PATCH v2] HISI LPC: Add Kconfig MFD_CORE dependency' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).