From: Javier Martinez Canillas <javier@osg.samsung.com>
To: Marek Szyprowski <m.szyprowski@samsung.com>,
linux-media@vger.kernel.org, linux-samsung-soc@vger.kernel.org
Cc: devicetree@vger.kernel.org,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Kamil Debski <k.debski@samsung.com>,
Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <k.kozlowski@samsung.com>,
Uli Middelberg <uli@middelberg.de>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: Re: [PATCH v4 4/7] media: s5p-mfc: add iommu support
Date: Wed, 25 May 2016 11:55:18 -0400 [thread overview]
Message-ID: <c73d0646-0b15-81a7-a2d9-e84da0920167@osg.samsung.com> (raw)
In-Reply-To: <1464096690-23605-5-git-send-email-m.szyprowski@samsung.com>
Hello Marek,
On 05/24/2016 09:31 AM, Marek Szyprowski wrote:
> This patch adds support for IOMMU to s5p-mfc device driver. MFC firmware
> is limited and it cannot use the default configuration. If IOMMU is
> available, the patch disables the default DMA address space
> configuration and creates a new address space of size limited to 256M
> and base address set to 0x20000000.
>
> For now the same address space is shared by both 'left' and 'right'
> memory channels, because the DMA/IOMMU frameworks do not support
> configuring them separately. This is not optimal, but besides limiting
> total address space available has no other drawbacks (MFC firmware
> supports 256M of address space per each channel).
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America
next prev parent reply other threads:[~2016-05-25 15:55 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-24 13:31 [PATCH v4 0/7] Exynos: MFC driver: reserved memory cleanup and IOMMU support Marek Szyprowski
2016-05-24 13:31 ` [PATCH v4 1/7] of: reserved_mem: add support for using more than one region for given device Marek Szyprowski
2016-05-26 19:08 ` Rob Herring
2016-05-24 13:31 ` [PATCH v4 2/7] media: s5p-mfc: use generic reserved memory bindings Marek Szyprowski
2016-05-25 15:18 ` Javier Martinez Canillas
2016-05-25 17:36 ` Rob Herring
2016-05-27 6:37 ` Marek Szyprowski
2016-05-27 20:41 ` Javier Martinez Canillas
2016-05-25 17:39 ` Rob Herring
2016-05-27 6:19 ` Krzysztof Kozlowski
2016-05-24 13:31 ` [PATCH v4 3/7] media: s5p-mfc: replace custom reserved memory handling code with generic one Marek Szyprowski
2016-05-25 15:42 ` Javier Martinez Canillas
2016-05-25 16:51 ` Javier Martinez Canillas
2016-06-08 10:36 ` Liviu Dudau
2016-06-08 11:33 ` [PATCH] media: s5p-mfc: fix error path in driver probe Marek Szyprowski
2016-06-08 14:35 ` Liviu Dudau
2016-06-08 21:44 ` Shuah Khan
2016-05-24 13:31 ` [PATCH v4 4/7] media: s5p-mfc: add iommu support Marek Szyprowski
2016-05-25 15:55 ` Javier Martinez Canillas [this message]
2016-05-24 13:31 ` [PATCH v4 5/7] ARM: Exynos: remove code for MFC custom reserved memory handling Marek Szyprowski
2016-05-25 15:57 ` Javier Martinez Canillas
2016-05-30 7:28 ` Krzysztof Kozlowski
2016-06-02 15:20 ` Javier Martinez Canillas
2016-06-02 16:31 ` Krzysztof Kozlowski
2016-06-02 17:25 ` Javier Martinez Canillas
2016-06-03 6:57 ` Krzysztof Kozlowski
2016-06-03 9:59 ` [ATTN] " Sylwester Nawrocki
2016-06-06 7:24 ` Krzysztof Kozlowski
2016-06-06 7:40 ` Krzysztof Kozlowski
2016-05-24 13:31 ` [PATCH v4 6/7] ARM: dts: exynos: convert MFC device to generic reserved memory bindings Marek Szyprowski
2016-05-25 11:13 ` Krzysztof Kozlowski
2016-05-25 17:11 ` Javier Martinez Canillas
2016-05-27 11:32 ` Marek Szyprowski
2016-05-27 20:54 ` Javier Martinez Canillas
2016-06-07 12:03 ` [PATCH 1/3] ARM: dts: exynos: replace hardcoded reserved memory ranges with auto-allocated ones Marek Szyprowski
2016-06-07 12:03 ` [PATCH 2/3] ARM: dts: exynos: move MFC reserved memory regions from boards to .dtsi Marek Szyprowski
2016-06-07 22:34 ` Javier Martinez Canillas
2016-06-07 12:03 ` [PATCH 3/3] ARM: dts: exynos: enable MFC device for all boards Marek Szyprowski
2016-06-07 22:34 ` Javier Martinez Canillas
2016-06-07 22:32 ` [PATCH 1/3] ARM: dts: exynos: replace hardcoded reserved memory ranges with auto-allocated ones Javier Martinez Canillas
2016-06-08 7:48 ` Krzysztof Kozlowski
2016-05-24 13:31 ` [PATCH v4 7/7] ARM: dts: exynos4412-odroid*: enable MFC device Marek Szyprowski
2016-05-25 17:13 ` Javier Martinez Canillas
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