linux-kernel - Re: [PATCH v16 4/8] soc: mediatek: add mtk-mmsys support for mt8195 vdosys0

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Message-ID: <56ca6920f036b74b28c5858d8b28c3f3046c4758.camel@mediatek.com>
Date:   Thu, 31 Mar 2022 23:40:02 +0800
From:   Jason-JH Lin <jason-jh.lin@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        CK Hu <ck.hu@...iatek.com>, "Rob Herring" <robh+dt@...nel.org>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
CC:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        <hsinyi@...omium.org>, <fshao@...omium.org>,
        <moudy.ho@...iatek.com>, <roy-cw.yeh@...iatek.com>,
        Fabien Parent <fparent@...libre.com>, <nancy.lin@...iatek.com>,
        <singo.chang@...iatek.com>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: Re: [PATCH v16 4/8] soc: mediatek: add mtk-mmsys support for mt8195
 vdosys0

Hi Matthias,

 * Thanks for the reviews.

On Thu, 2022-03-31 at 13:01 +0200, Matthias Brugger wrote:
> 
> On 30/03/2022 12:04, Jason-JH Lin wrote:
> > Hi CK,
> > 
> > Thanks for the review.
> > 
> > On Mon, 2022-03-28 at 13:39 +0800, CK Hu wrote:
> > > Hi, Jason:
> > > 
> > > On Mon, 2022-03-28 at 13:03 +0800, Jason-JH Lin wrote:
> > > > Hi CK,
> > > > 
> > > > Thanks for the reviews.
> > > > 
> > > > On Mon, 2022-03-07 at 11:28 +0800, jason-jh.lin wrote:
> > > > > Add mt8195 vdosys0 clock driver name and routing table to
> > > > > the driver data of mtk-mmsys.
> > > > > 
> > > > > Signed-off-by: jason-jh.lin <jason-jh.lin@...iatek.com>
> > > > > Acked-by: AngeloGioacchino Del Regno <
> > > > > angelogioacchino.delregno@...labora.com>
> > > > > ---
> > > > > Impelmentation patch of vdosys1 can be refered to [1]
> > > > > 
> > > > > [1] soc: mediatek: add mtk-mmsys support for mt8195 vdosys1
> > > > > ---
> > > > >   drivers/soc/mediatek/mt8195-mmsys.h    | 130
> > > > > +++++++++++++++++++++++++
> > > > >   drivers/soc/mediatek/mtk-mmsys.c       |  11 +++
> > > > >   include/linux/soc/mediatek/mtk-mmsys.h |   9 ++
> > > > >   3 files changed, 150 insertions(+)
> > > > >   create mode 100644 drivers/soc/mediatek/mt8195-mmsys.h
> > > > > 
> > > > > diff --git a/drivers/soc/mediatek/mt8195-mmsys.h
> > > > > b/drivers/soc/mediatek/mt8195-mmsys.h
> > > > > new file mode 100644
> > > > > index 000000000000..24a3afe23bc8
> > > > > --- /dev/null
> > > > > +++ b/drivers/soc/mediatek/mt8195-mmsys.h
> > > > > @@ -0,0 +1,130 @@
> > > > > +/* SPDX-License-Identifier: GPL-2.0-only */
> > > > > +
> > > > > +#ifndef __SOC_MEDIATEK_MT8195_MMSYS_H
> > > > > +#define __SOC_MEDIATEK_MT8195_MMSYS_H
> > > > > +
> > > > > +#define MT8195_VDO0_OVL_MOUT_EN				
> > > > > 	
> > > > > 0xf14
> > > > > +#define MT8195_MOUT_DISP_OVL0_TO_DISP_RDMA0			
> > > > > BIT(0)
> > > > > +#define MT8195_MOUT_DISP_OVL0_TO_DISP_WDMA0			
> > > > > BIT(1)
> > > > >   
> > > > > Useless, so remove.
> > > > > 
> > > > > +#define MT8195_MOUT_DISP_OVL0_TO_DISP_OVL1			
> > > > > BIT(2)
> > > > > Ditto.Useless, so remove.
> > > > > Regards,
> > > > > CK
> > > > 
> > > > Although these definitions are not used, they represent the
> > > > functionality provided by this register.
> > > > 
> > > > I think we can show that we have these capabilities by defining
> > > > them.
> > > > 
> > > > Can we keep these definitions?
> > > 
> > > It's better that we know how to use it. Even though the symbol
> > > name
> > > show some information, but I would like to add it to
> > > mmsys_mt8195_routing_table[].
> > > 
> > > Regards,
> > > CK
> > > 
> > 
> > OK, I think I just remove the useless define.
> 
> Actually I would prefer to add it to the routing table to describe
> all the 
> capabilities of the HW.
> 
> Is there any technical problem with that?
> 
> Regards,
> Matthias
> 
OK, I'll add keep these definitions and add them to the routing table.

Regards,
Jason-JH.Lin

> > Thanks.
> > 
> > Regards,
> > Jason-JH.Lin
> > > > 
> > > > Regards,
> > > > Jason-JH.Lin
> > > > 
> > > > > +#define MT8195_MOUT_DISP_OVL1_TO_DISP_RDMA1			
> > > > > BIT(4)
> > > > > +#define MT8195_MOUT_DISP_OVL1_TO_DISP_WDMA1			
> > > > > BIT(5)
> > > > > +#define MT8195_MOUT_DISP_OVL1_TO_DISP_OVL0			
> > > > > BIT(6)
> > > > 
> > > > 
> > > > [snip]
> > > > 
> > > 
> > > 
-- 
Jason-JH Lin <jason-jh.lin@...iatek.com>