Messages in this thread | | | Date | Fri, 16 Mar 2012 13:47:50 -0700 | From | Kukjin Kim <> | Subject | Re: [PATCH v12 2/3] ARM: EXYNOS: Change System MMU platform device definitions |
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Subash Patel wrote: > Hi KyongHo, Kukjin, > > On 03/15/2012 08:09 PM, Kukjin Kim wrote: >> On 03/15/12 04:12, Joerg Roedel wrote: >>> On Thu, Mar 15, 2012 at 05:32:39PM +0900, Cho KyongHo wrote: >> >> KyongHo, I looked at 'Cho KyongHo <pullip.cho ...>' and 'KyongHo Cho >> <pullip.cho ...>' in this series, which one do you want to use? >> >>>> Handling System MMUs with an identifier is not flexible to manage >>>> System MMU platform devices because of the following reasons: >>>> 1. A device driver which needs to handle System MMU must know the ID. >>>> 2. A System MMU may not present in some implementations of Exynos >>>> family. >>>> 3. Handling System MMU with IOMMU API does not require an ID. >>>> >>>> This patch is the result of removing ID of System MMUs. >>>> Instead, a device driver that needs to handle its System MMU must >>>> use IOMMU API while its descriptor of platform device is given. >>>> >>>> This patch also includes the following enhancements: >>>> - A System MMU device becomes a child if its power domain device. >>>> - clkdev >>>> >>>> Cc: Kukjin Kim<kgene.kim@samsung.com> >>>> Signed-off-by: KyongHo Cho<pullip.cho@samsung.com> >>>> --- >>>> arch/arm/mach-exynos/Kconfig | 10 +- >>>> arch/arm/mach-exynos/Makefile | 2 +- >>>> arch/arm/mach-exynos/clock-exynos4.c | 79 ++-- >>>> arch/arm/mach-exynos/clock-exynos4.h | 2 + >>>> arch/arm/mach-exynos/clock-exynos4210.c | 11 + >>>> arch/arm/mach-exynos/clock-exynos4212.c | 28 ++- >>>> arch/arm/mach-exynos/clock-exynos5.c | 90 +++++ >>>> arch/arm/mach-exynos/dev-sysmmu.c | 457 ++++++++++++---------- >>>> arch/arm/mach-exynos/include/mach/irqs.h | 25 +- >>>> arch/arm/mach-exynos/include/mach/map.h | 38 ++ >>>> arch/arm/mach-exynos/include/mach/regs-clock.h | 5 + >>>> arch/arm/mach-exynos/include/mach/regs-sysmmu.h | 28 -- >>>> arch/arm/mach-exynos/include/mach/sysmmu.h | 88 +++-- >>>> arch/arm/mach-exynos/mach-armlex4210.c | 1 - >>>> arch/arm/mach-exynos/mach-smdkv310.c | 1 - >>>> 15 files changed, 529 insertions(+), 336 deletions(-) >>>> delete mode 100644 arch/arm/mach-exynos/include/mach/regs-sysmmu.h >>> >>> This patch doesn't apply cleanly against upstream Linux (v3.3-rcX). >>> Please rebase to upstream and resend. The other 2 patches apply fine. >>> >> >> Yes, as KyoungHo said, this has been created on top of Samsung tree >> for-next because this touches many exynos stuff which has been changed >> from Samsung tree for upcoming merge window. So if you're ok on this, >> 1st patch and this should be sent to upstream via samsung tree even >> though I can't find any topic branch for this yet. And if you want >> topic branch for your tree, let me know, I can provide it. >> >> Thanks. > Wouldn't it be good to send exynos4 SYSMMU patches now, and send only > the exynos5 delta when your for-next(exynos5) changes
Hmm, it can be a solution for this, but I'm not sure exynos4 and exynos5 can be splitted.
> get merged to mainline? Manually editing the patches is really pain-some
YES, absolutely. Nobody like it.
> and sometimes error-some :( Can this patch in particular > be split?
Hmm...
Now we don't have much time for upcoming merge window, and this should be in linux-next before open merge window.
Anyway Joerg, how do you want to handle this? Do you want to pick up 1/2/3 all of them in your tree? If so, 2nd patch should be on top of some samsung topic stuff.
Thanks.
Best regards, Kgene. -- Kukjin Kim <kgene.kim@samsung.com>, Senior Engineer, SW Solution Development Team, Samsung Electronics Co., Ltd.
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