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Message-ID: <CAGcde9HNa0V+8it-=3xpJisDgWsb1YbC8-Twm5BGFtNJ+uEyDA@mail.gmail.com> Date: Sat, 26 Apr 2014 11:07:14 +0900 From: Pankaj Dubey <pankaj.dubey@...sung.com> To: Tomasz Figa <tomasz.figa@...il.com> Cc: linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, kgene.kim@...sung.com, linux@....linux.org.uk, Tomasz Figa <t.figa@...sung.com>, chow.kim@...sung.com, yg1004.jang@...sung.com, vikas.sajjan@...sung.com, s.nawrocki@...sung.com, b.zolnierkie@...sung.com Subject: Re: [PATCH v2 00/10] ARM: Exynos: PMU cleanup and refactoring for using DT Hi Tomasz, On Sat, Apr 26, 2014 at 7:43 AM, Tomasz Figa <tomasz.figa@...il.com> wrote: > > Hi Pankaj, > > Just a small note - please refrain from sending next versions of series in reply to previous version. With threading applied, it gets hard to notice that a new version was posted, because the first message of the thread is always v1. Also it makes threads unnecessarily long. > OK. I will take care in future. > > Best regards, > Tomasz > > > On 25.04.2014 14:32, Pankaj Dubey wrote: >> >> This patch series, does some minor cleanup and modifies Exynos PMU related >> code for mapping and initialization of Exynos Power Management Unit (PMU) >> base address from device tree. This is also preparation for moving PMU >> related code out of machine folder and moving into a "drivers/mfd", so that >> ARM64 based SoC can utilize common piece of code. These patches require change >> in Exynos4210, Exynos4212 and Exynos4412 dtsi files, which has been posted >> as separate patch series [2] >> >> These patches are created on top of Kukjin Kim's for-next (v3.15-rc1 tag) >> branch. >> >> These patches depends on following two patch series: >> 1) mfd: syscon: Support early initialization >> https://lkml.org/lkml/2014/4/8/239 >> 2) Add PMU node for Exynos SoCs >> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg29329.html >> >> We have tested these patches on SMDK5250 and Arndale (Exynos5250) boards for >> System boot and PMU initialization and S2R. >> >> For testing on Arndale (Exynos5250) board: >> Tested-by: Pankaj Dubey <pankaj.dubey@...sung.com> >> >> Changes Since v1: >> - Rebased on latest for-next of Kukjin Kim's tree. >> - Added patch: "Make exynos machine_ops as static". >> For making more cleanup in "mach-exynos/common.h" >> as suggested by Tomasz Figa. >> - Addressed comments of Tomasz Figa for cleaning "mach-exynos/common.h". >> - Updated patch: Remove file path from comment section >> As suggested by Michel Simek, instead of updating file path >> lets remove them from each file under "mach-exynos". >> Even though Kukjin pointed out that there is similar patch pending from >> Sachin/Tushar but since I could not find I have included this here. If >> I have missed something please point to any existing such patch. >> - Updated patch: Add support for mapping PMU base address via DT >> - Removed __initdata from declaration of "exynos_pmu_base", as it caused >> kernel crash as pointed out by Vikas Sajjan. >> - Added support for Syscon initialization and getting PMU regmap handle >> as suggested by Sylwester. Since current implementation of early >> intialization [1] has limitation that "early_syscon_init" requires >> DT to be unflattened and system should be able to allocate memory, >> we can't use regmap handles for platsmp.c file as "smp_secondary_init" >> will be called before DT unflattening. So I have kept both method for >> accessing PMU base address. platsmp.c will use ioremmaped address where >> as rest other files can use regmap handle. >> - Added patch: Remove "linux/bug.h" from pmu.c. >> - Updated patch: Refactored code for PMU register mapping via DT >> - Modified to use regmap_read/write when using regmap handle. >> - Added patch: Move "mach/map.h" inclusion from regs-pmu.h to platsmp.c >> - Added patch: Add device tree based initialization support for PMU. >> - Convert existing PMU implementation to be a device tree based >> before moving it to "drivers/mfd" folder. As suggested by Bartlomiej. >> - Dropped making a platform_driver for PMU, as currently PMU binding >> has two compatibility strings as "samsung, exynosxxx-pmu", "syscon", >> once we enable MFD_SYSCON config option, current "syscon" driver probe >> gets called and PMU probe never gets called. So modified PMU >> initialization code to scan DT and match against supported compatiblity >> string in driver code, and once we get matching node use that for >> accessing PMU regmap handle using "syscon_early_regmap_lookup_by_phandle". >> If there is any better solution please suggest. >> >> Pankaj Dubey (6): >> ARM: EXYNOS: Make exynos machine_ops as static >> ARM: EXYNOS: Cleanup "mach-exynos/common.h" file >> ARM: EXYNOS: Remove file path from comment section >> ARM: EXYNOS: Refactored code for using PMU address via DT >> ARM: EXYNOS: Move "mach/map.h" inclusion from regs-pmu.h to platsmp.c >> ARM: EXYNOS: Add device tree based initialization support for PMU. >> >> Young-Gun Jang (4): >> ARM: EXYNOS: Move SYSREG definition into sys-reg specific file. >> ARM: EXYNOS: Remove regs-pmu.h header dependency from pm_domain >> ARM: EXYNOS: Add support for mapping PMU base address via DT >> ARM: EXYNOS: Remove "linux/bug.h" from pmu.c >> >> arch/arm/mach-exynos/Kconfig | 2 + >> arch/arm/mach-exynos/common.h | 13 +- >> arch/arm/mach-exynos/cpuidle.c | 37 +- >> arch/arm/mach-exynos/exynos.c | 104 +++++- >> arch/arm/mach-exynos/headsmp.S | 2 - >> arch/arm/mach-exynos/hotplug.c | 7 +- >> arch/arm/mach-exynos/include/mach/map.h | 3 - >> arch/arm/mach-exynos/include/mach/memory.h | 3 +- >> arch/arm/mach-exynos/platsmp.c | 17 +- >> arch/arm/mach-exynos/pm.c | 61 ++-- >> arch/arm/mach-exynos/pm_domains.c | 2 +- >> arch/arm/mach-exynos/pmu.c | 191 ++++++++--- >> arch/arm/mach-exynos/regs-pmu.h | 512 ++++++++++++++-------------- >> arch/arm/mach-exynos/regs-sys.h | 22 ++ >> 14 files changed, 585 insertions(+), 391 deletions(-) >> create mode 100644 arch/arm/mach-exynos/regs-sys.h >> > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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