linux-kernel - Re: [PATCH v6 2/3] soc/sophgo: add top sysctrl layout file for CV18XX/SG200X

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Date: Sun, 7 Apr 2024 19:36:46 +0800
From: Inochi Amaoto <inochiama@...look.com>
To: Vinod Koul <vkoul@...nel.org>, Inochi Amaoto <inochiama@...look.com>
Cc: Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Chen Wang <unicorn_wang@...look.com>, Paul Walmsley <paul.walmsley@...ive.com>, 
	Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
	Jisheng Zhang <jszhang@...nel.org>, Liu Gui <kenneth.liu@...hgo.com>, 
	Jingbao Qiu <qiujingbao.dlmu@...il.com>, dlan@...too.org, dmaengine@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v6 2/3] soc/sophgo: add top sysctrl layout file for
 CV18XX/SG200X

On Sun, Apr 07, 2024 at 04:53:10PM +0530, Vinod Koul wrote:
> On 29-03-24, 10:04, Inochi Amaoto wrote:
> > The "top" system controller of CV18XX/SG200X exposes control
> > register access for various devices. Add soc header file to
> > describe it.
> > 
> > Signed-off-by: Inochi Amaoto <inochiama@...look.com>
> > ---
> >  include/soc/sophgo/cv1800-sysctl.h | 30 ++++++++++++++++++++++++++++++
> >  1 file changed, 30 insertions(+)
> >  create mode 100644 include/soc/sophgo/cv1800-sysctl.h
> > 
> > diff --git a/include/soc/sophgo/cv1800-sysctl.h b/include/soc/sophgo/cv1800-sysctl.h
> > new file mode 100644
> > index 000000000000..b9396d33e240
> > --- /dev/null
> > +++ b/include/soc/sophgo/cv1800-sysctl.h
> > @@ -0,0 +1,30 @@
> > +/* SPDX-License-Identifier: GPL-2.0-or-later */
> > +/*
> > + * Copyright (C) 2023 Inochi Amaoto <inochiama@...look.com>
> > + */
> > +
> > +#ifndef CV1800_SYSCTL_H
> > +#define CV1800_SYSCTL_H
> > +
> > +/*
> > + * SOPHGO CV1800/SG2000 SoC top system controller registers offsets.
> > + */
> > +
> > +#define CV1800_CONF_INFO		0x004
> > +#define CV1800_SYS_CTRL_REG		0x008
> > +#define CV1800_USB_PHY_CTRL_REG		0x048
> > +#define CV1800_SDMA_DMA_CHANNEL_REMAP0	0x154
> > +#define CV1800_SDMA_DMA_CHANNEL_REMAP1	0x158
> > +#define CV1800_TOP_TIMER_CLK_SEL	0x1a0
> > +#define CV1800_TOP_WDT_CTRL		0x1a8
> > +#define CV1800_DDR_AXI_URGENT_OW	0x1b8
> > +#define CV1800_DDR_AXI_URGENT		0x1bc
> > +#define CV1800_DDR_AXI_QOS_0		0x1d8
> > +#define CV1800_DDR_AXI_QOS_1		0x1dc
> > +#define CV1800_SD_PWRSW_CTRL		0x1f4
> > +#define CV1800_SD_PWRSW_TIME		0x1f8
> > +#define CV1800_DDR_AXI_QOS_OW		0x23c
> > +#define CV1800_SD_CTRL_OPT		0x294
> > +#define CV1800_SDMA_DMA_INT_MUX		0x298
> 
> Why are these register defines in soc, all the dma registers should
> belong to dma driver and other IPs, why do you need a common header??
> 
> -- 
> ~Vinod

This multiplexer is not a standalone device, instead, it is a 
subdevice of the syscon. Although it is better to add this 
header to the syscon series, the dma multiplexer driver itself 
depends this header. So I add the header to this series.

Regards,
Inochi