From: Rob Herring <robh@kernel.org>
To: Linus Walleij <linus.walleij@linaro.org>,
Liviu Dudau <liviu.dudau@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>
Cc: Kevin Brodsky <Kevin.Brodsky@arm.com>,
Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Lee Jones <lee.jones@linaro.org>,
Sebastian Reichel <sre@kernel.org>,
Stephen Boyd <sboyd@kernel.org>, Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
linux-pm@vger.kernel.org
Subject: [PATCH v2 00/17] Modularizing Versatile Express
Date: Wed, 29 Apr 2020 15:58:09 -0500 [thread overview]
Message-ID: <20200429205825.10604-1-robh@kernel.org> (raw)
This series enables building various Versatile Express platform drivers
as modules. The primary target is the Fast Model FVP which is supported
in Android. As Android is moving towards their GKI, or generic kernel,
the hardware support has to be in modules. Currently ARCH_VEXPRESS
enables several built-in only drivers. Some of these are needed, but
some are only needed for older 32-bit VExpress platforms and can just
be disabled. For FVP, the pl111 display driver is needed. The pl111
driver depends on vexpress-osc clocks which had a dependency chain of
vexpress-config --> vexpress-syscfg --> vexpress-sysreg. These
components relied on fixed initcall ordering and didn't support deferred
probe which would have complicated making them modules. All these levels
of abstraction are needlessly complicated, so this series simplifies
things a bit by merging the vexpress-config and vexpress-syscfg
functionality.
There's a couple of other pieces to this which I've sent out separately
as they don't have dependencies with this series. The cross subsystem
dependencies in this series are mainly the ordering of enabling drivers
as modules.
A complete git branch is here[1]. Tested on Fast Model FVP Rev C.
v2:
The major change is a boot fix for 32-bit VExpress platforms with patch 3.
I also dropped 'power/reset: vexpress: Support building as a module' as it
was incomplete and not needed for this series.
Rob
[1] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git vexpress-modules-v4
Rob Herring (16):
ARM: vexpress: Move vexpress_flags_set() into arch code
arm64: vexpress: Don't select CONFIG_POWER_RESET_VEXPRESS
amba: Retry adding deferred devices at late_initcall
clk: versatile: Rework kconfig structure
clk: versatile: Only enable SP810 on 32-bit by default
clk: vexpress-osc: Use the devres clock API variants
clk: vexpress-osc: Support building as a module
mfd: vexpress-sysreg: Drop selecting CONFIG_CLKSRC_MMIO
mfd: vexpress-sysreg: Drop unused syscon child devices
mfd: vexpress-sysreg: Use devres API variants
mfd: vexpress-sysreg: Support building as a module
bus: vexpress-config: Merge vexpress-syscfg into vexpress-config
bus: vexpress-config: simplify config bus probing
vexpress: Move setting master site to vexpress-config bus
bus: vexpress-config: Support building as module
ARM: vexpress: Don't select VEXPRESS_CONFIG
arch/arm/mach-integrator/Kconfig | 1 -
arch/arm/mach-realview/Kconfig | 1 -
arch/arm/mach-versatile/Kconfig | 1 -
arch/arm/mach-vexpress/Kconfig | 4 -
arch/arm/mach-vexpress/core.h | 1 +
arch/arm/mach-vexpress/dcscb.c | 1 +
arch/arm/mach-vexpress/v2m.c | 23 ++
arch/arm64/Kconfig.platforms | 3 -
drivers/amba/bus.c | 14 +-
drivers/bus/Kconfig | 2 +-
drivers/bus/vexpress-config.c | 354 ++++++++++++++++++-----
drivers/clk/Makefile | 2 +-
drivers/clk/versatile/Kconfig | 24 +-
drivers/clk/versatile/clk-vexpress-osc.c | 20 +-
drivers/mfd/Kconfig | 5 +-
drivers/mfd/vexpress-sysreg.c | 99 +------
drivers/misc/Kconfig | 9 -
drivers/misc/Makefile | 1 -
drivers/misc/vexpress-syscfg.c | 280 ------------------
include/linux/vexpress.h | 30 --
20 files changed, 354 insertions(+), 521 deletions(-)
delete mode 100644 drivers/misc/vexpress-syscfg.c
base-commit: 8f3d9f354286745c751374f5f1fcafee6b3f3136
--
2.20.1
next reply other threads:[~2020-04-29 20:58 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-29 20:58 Rob Herring [this message]
2020-04-29 20:58 ` [PATCH v2 01/16] ARM: vexpress: Move vexpress_flags_set() into arch code Rob Herring
2020-05-04 8:56 ` Lee Jones
2020-04-29 20:58 ` [PATCH v2 02/16] arm64: vexpress: Don't select CONFIG_POWER_RESET_VEXPRESS Rob Herring
2020-04-29 20:58 ` [PATCH v2 03/16] amba: Retry adding deferred devices at late_initcall Rob Herring
2020-04-29 20:58 ` [PATCH v2 04/16] clk: versatile: Rework kconfig structure Rob Herring
2020-05-01 16:26 ` Sudeep Holla
2020-05-05 6:20 ` Stephen Boyd
2020-04-29 20:58 ` [PATCH v2 05/16] clk: versatile: Only enable SP810 on 32-bit by default Rob Herring
2020-05-01 16:32 ` Sudeep Holla
2020-05-05 6:20 ` Stephen Boyd
2020-04-29 20:58 ` [PATCH v2 06/16] clk: vexpress-osc: Use the devres clock API variants Rob Herring
2020-04-29 20:58 ` [PATCH v2 07/16] clk: vexpress-osc: Support building as a module Rob Herring
2020-05-01 16:36 ` Sudeep Holla
2020-05-05 6:21 ` Stephen Boyd
2020-04-29 20:58 ` [PATCH v2 08/16] mfd: vexpress-sysreg: Drop selecting CONFIG_CLKSRC_MMIO Rob Herring
2020-05-01 16:37 ` Sudeep Holla
2020-05-04 8:55 ` Lee Jones
2020-04-29 20:58 ` [PATCH v2 09/16] mfd: vexpress-sysreg: Drop unused syscon child devices Rob Herring
2020-05-01 16:50 ` Sudeep Holla
2020-05-04 8:41 ` Lee Jones
2020-04-29 20:58 ` [PATCH v2 10/16] mfd: vexpress-sysreg: Use devres API variants Rob Herring
2020-05-01 16:56 ` Sudeep Holla
2020-05-04 8:41 ` Lee Jones
2020-04-29 20:58 ` [PATCH v2 11/16] mfd: vexpress-sysreg: Support building as a module Rob Herring
2020-05-01 16:58 ` Sudeep Holla
2020-05-04 8:40 ` Lee Jones
2020-04-29 20:58 ` [PATCH v2 12/16] bus: vexpress-config: Merge vexpress-syscfg into vexpress-config Rob Herring
2020-05-01 17:02 ` Sudeep Holla
2020-04-29 20:58 ` [PATCH v2 13/16] bus: vexpress-config: simplify config bus probing Rob Herring
2020-05-01 17:10 ` Sudeep Holla
2020-04-29 20:58 ` [PATCH v2 14/16] vexpress: Move setting master site to vexpress-config bus Rob Herring
2020-05-01 17:18 ` Sudeep Holla
2020-05-04 8:26 ` Lee Jones
2020-04-29 20:58 ` [PATCH v2 15/16] bus: vexpress-config: Support building as module Rob Herring
2020-05-01 16:58 ` Sudeep Holla
2020-04-29 20:58 ` [PATCH v2 16/16] ARM: vexpress: Don't select VEXPRESS_CONFIG Rob Herring
2020-05-01 16:55 ` Sudeep Holla
2020-04-29 22:11 ` [PATCH v2 00/17] Modularizing Versatile Express Sebastian Reichel
2020-05-01 17:20 ` Sudeep Holla
2020-06-17 15:08 ` Daniel Thompson
2020-07-08 16:39 ` Rob Herring
2020-07-09 11:33 ` Daniel Thompson
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