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From: Jagan Teki <jagan@amarulasolutions.com>
To: Chen-Yu Tsai <wens@csie.org>
Cc: Icenowy Zheng <icenowy@aosc.io>, Rob Herring <robh+dt@kernel.org>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	devicetree <devicetree@vger.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-clk <linux-clk@vger.kernel.org>,
	linux-sunxi <linux-sunxi@googlegroups.com>
Subject: Re: [PATCH 3/7] bus: add bus driver for accessing Allwinner A64 DE2
Date: Sat, 14 Apr 2018 16:16:38 +0530	[thread overview]
Message-ID: <CAMty3ZAfBZSc9f5mRxSaYzW6W1JkVkJ7+swMAm3Gg_EFWUkULw@mail.gmail.com> (raw)
In-Reply-To: <CAGb2v64-sWsFfHThVrcE5ivrf6kZSZa_tkB_GtC=Z+1TLpWV_Q@mail.gmail.com>

On Sat, Apr 14, 2018 at 4:00 PM, Chen-Yu Tsai <wens@csie.org> wrote:
> On Sat, Apr 14, 2018 at 6:25 PM, Jagan Teki <jagan@amarulasolutions.com> wrote:
>> On Fri, Mar 16, 2018 at 11:23 PM, Icenowy Zheng <icenowy@aosc.io> wrote:
>>> The "Display Engine 2.0" (usually called DE2) on the Allwinner A64 SoC
>>> is different from the ones on other Allwinner SoCs. It requires a SRAM
>>> region to be claimed, otherwise all DE2 subblocks won't be accessible.
>>>
>>> Add a bus driver for the Allwinner A64 DE2 part which claims the SRAM
>>> region when probing.
>>
>> Along with this bus driver, we also need
>> drivers/gpu/drm/sun4i/sun4i_drv.c which can usually drive the
>> pipelines like mixer0 and 1 are the cases for A64?
>
> I imagine that's the next part to be sent out, after the hardware
> representation in the device tree has been decided on.

Yeah, this hardware representation along with separate bus driver
going like in another direction especially if we add pipelines support
to it, may be we can add sram stuff to platdata of existinf
sun4i_drv.c

Jagan.

-- 
Jagan Teki
Senior Linux Kernel Engineer | Amarula Solutions
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.

  reply	other threads:[~2018-04-14 10:46 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-16 17:53 [PATCH 0/7] Allwinner A64 DE2 CCU support with dedicated DE2 bus driver Icenowy Zheng
2018-03-16 17:53 ` [PATCH 1/7] dt-bindings: add compatible string for the A64 DE2 CCU Icenowy Zheng
2018-03-19 22:00   ` Stephen Boyd
2018-03-26 22:22   ` Rob Herring
2018-03-16 17:53 ` [PATCH 2/7] dt-bindings: add binding for the Allwinner A64 DE2 bus Icenowy Zheng
2018-03-20 18:46   ` Maxime Ripard
2018-03-21  2:18     ` Icenowy Zheng
2018-03-21 17:13       ` [linux-sunxi] " Jernej Škrabec
2018-03-22  6:08         ` Icenowy Zheng
2018-03-26 22:22           ` Rob Herring
2018-03-26 23:31             ` Icenowy Zheng
2018-03-27  8:11               ` Maxime Ripard
2018-03-16 17:53 ` [PATCH 3/7] bus: add bus driver for accessing Allwinner A64 DE2 Icenowy Zheng
2018-04-14 10:25   ` Jagan Teki
2018-04-14 10:30     ` Chen-Yu Tsai
2018-04-14 10:46       ` Jagan Teki [this message]
2018-04-19  6:35         ` Jagan Teki
2018-03-16 17:53 ` [PATCH 4/7] clk: sunxi-ng: add A64 compatible string Icenowy Zheng
2018-03-16 17:53 ` [PATCH 5/7] arm64: allwinner: a64: add DE2 CCU related device tree nodes Icenowy Zheng
2018-03-20 18:47   ` Maxime Ripard
2018-03-16 17:53 ` [PATCH 6/7] arm64: allwinner: a64: add simplefb for A64 SoC Icenowy Zheng
2018-03-16 17:53 ` [PATCH 7/7] arm64: allwinner: a64: add HDMI regulator to all DTs' simplefb_hdmi Icenowy Zheng

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