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From: Yong Wu <yong.wu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>
Cc: youlin.pei@mediatek.com, Nicolas Boichat <drinkcat@chromium.org>,
	arnd@arndb.de, srv_heupstream@mediatek.com,
	Joerg Roedel <joro@8bytes.org>, Will Deacon <will.deacon@arm.com>,
	linux-kernel@vger.kernel.org, Tomasz Figa <tfiga@google.com>,
	iommu@lists.linux-foundation.org,
	Rob Herring <robh+dt@kernel.org>,
	linux-mediatek@lists.infradead.org, yingjoe.chen@mediatek.com,
	Robin Murphy <robin.murphy@arm.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v5 12/20] memory: mtk-smi: Add gals support
Date: Mon, 14 Jan 2019 14:57:28 +0800	[thread overview]
Message-ID: <1547449048.24830.15.camel@mhfsdcap03> (raw)
In-Reply-To: <1546314952-15990-13-git-send-email-yong.wu@mediatek.com>

Hi Matthias,

   Gentle ping about this and the other mtk-smi part in this patchset.

   The memory part don't have its specific maintainer, normally we need
SoC maintain's help. Thus, For this file(memory/mtk-smi.c), your review
is needed before Joerg accept it.

    Appreciate in advance.

On Tue, 2019-01-01 at 11:55 +0800, Yong Wu wrote:
> In some SoCs like mt8183, SMI add GALS(Global Async Local Sync) module
> which can help synchronize for the modules in different clock frequency.
> It can be seen as a "asynchronous fifo". This is a example diagram:
> 
>             M4U
>              |
>          ----------
>          |        |
>      gals0-rx   gals1-rx
>          |        |
>          |        |
>      gals0-tx   gals1-tx
>          |        |
>         ------------
>          SMI Common
>         ------------
>              |
>   +-----+--------+-----+- ...
>   |     |        |     |
>   |  gals-rx  gals-rx  |
>   |     |        |     |
>   |     |        |     |
>   |  gals-tx  gals-tx  |
>   |     |        |     |
> larb1 larb2   larb3  larb4
> 
> GALS only help transfer the command/data while it doesn't have the
> configuring register, thus it has the special "smi" clock and doesn't
> have the "apb" clock. From the diagram above, we add "gals0" and
> "gals1" clocks for smi-common and add a "gals" clock for smi-larb.
> 
> This patch adds gals clock supporting in the SMI. Note that some larbs
> may still don't have the "gals" clock like larb1 and larb4 above.
> 
> This is also a preparing patch for mt8183 which has GALS.
> 
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>
> ---
>  drivers/memory/mtk-smi.c | 36 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
[...]
  




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  reply	other threads:[~2019-01-14  6:57 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-01  3:55 [PATCH v5 00/18] MT8183 IOMMU SUPPORT Yong Wu
2019-01-01  3:55 ` [PATCH v5 01/20] dt-bindings: mediatek: Add binding for mt8183 IOMMU and SMI Yong Wu
2019-01-30 18:27   ` Evan Green
2019-01-31  3:19     ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 02/20] iommu/mediatek: Use a struct as the platform data Yong Wu
2019-01-30 18:27   ` Evan Green
2019-01-01  3:55 ` [PATCH v5 03/20] memory: mtk-smi: Use a general config_port interface Yong Wu
2019-01-30 18:27   ` Evan Green
2019-01-01  3:55 ` [PATCH v5 04/20] memory: mtk-smi: Use a struct for the platform data for smi-common Yong Wu
2019-01-30 18:28   ` Evan Green
2019-01-01  3:55 ` [PATCH v5 05/20] iommu/io-pgtable-arm-v7s: Add paddr_to_iopte and iopte_to_paddr helpers Yong Wu
2019-01-30 18:28   ` Evan Green
2019-01-01  3:55 ` [PATCH v6 06/20] iommu/io-pgtable-arm-v7s: Extend MediaTek 4GB Mode Yong Wu
2019-01-30 18:28   ` Evan Green
2019-01-31  6:58     ` Yong Wu
2019-01-31 19:23       ` Evan Green
2019-02-01  9:42         ` Yong Wu
2019-02-05 23:11           ` Evan Green
2019-02-17 10:01             ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 07/20] iommu/mediatek: Add bclk can be supported optionally Yong Wu
2019-01-30 18:29   ` Evan Green
2019-01-01  3:55 ` [PATCH v5 08/20] iommu/mediatek: Add larb-id remapped support Yong Wu
2019-01-30 18:29   ` Evan Green
2019-01-01  3:55 ` [PATCH v5 09/20] iommu/mediatek: Refine protect memory definition Yong Wu
2019-01-30 18:30   ` Evan Green
2019-01-01  3:55 ` [PATCH v5 10/20] iommu/mediatek: Move reset_axi into plat_data Yong Wu
2019-01-30 18:30   ` Evan Green
2019-01-31  3:22     ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 11/20] iommu/mediatek: Move vld_pa_rng " Yong Wu
2019-01-30 18:30   ` Evan Green
2019-01-31  3:20     ` Yong Wu
2019-01-31 16:36       ` Evan Green
2019-01-01  3:55 ` [PATCH v5 12/20] memory: mtk-smi: Add gals support Yong Wu
2019-01-14  6:57   ` Yong Wu [this message]
2019-01-30 18:30   ` Evan Green
2019-01-01  3:55 ` [PATCH v5 13/20] iommu/mediatek: Add mt8183 IOMMU support Yong Wu
2019-01-30 18:31   ` Evan Green
2019-01-31  3:19     ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 14/20] iommu/mediatek: Add mmu1 support Yong Wu
2019-01-30 18:55   ` Evan Green
2019-01-31  3:22     ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 15/20] memory: mtk-smi: Invoke pm runtime_callback to enable clocks Yong Wu
2019-01-30 19:05   ` Evan Green
2019-01-31  3:42     ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 16/20] memory: mtk-smi: Add bus_sel for mt8183 Yong Wu
2019-01-30 19:07   ` Evan Green
2019-01-31  3:20     ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 17/20] memory: mtk-smi: Get rid of need_larbid Yong Wu
2019-01-30 19:11   ` Evan Green
2019-01-31  3:22     ` Yong Wu
2019-01-31 17:45       ` Evan Green
2019-02-01  9:42         ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 18/20] iommu/mediatek: Fix VLD_PA_RANGE register backup when suspend Yong Wu
2019-01-30 19:11   ` Evan Green
2019-01-01  3:55 ` [PATCH v5 19/20] iommu/mediatek: Add shutdown callback Yong Wu
2019-01-30 19:12   ` Evan Green
2019-01-31  3:21     ` Yong Wu
2019-01-01  3:55 ` [PATCH v5 20/20] iommu/mediatek: Switch to SPDX license identifier Yong Wu
2019-01-30 19:13   ` Evan Green

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