From: icenowy-h8G6r0blFSE@public.gmane.org
To: Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH 1/2] dt-bindings: add binding for A64 DE2 CCU with SRAM section
Date: Mon, 16 Oct 2017 17:41:10 +0800 [thread overview]
Message-ID: <d62ac8b8ff9073b886ceaa9ce54e6903@aosc.io> (raw)
In-Reply-To: <20171016091136.b4rnckh2tfi26shx-ZC1Zs529Oq4@public.gmane.org>
在 2017-10-16 17:11，Maxime Ripard 写道：
> On Sat, Oct 14, 2017 at 08:29:24PM +0800, Icenowy Zheng wrote:
>> A64's Display Engine 2.0 needs a section of SRAM (SRAM C) to be
>> claimed.
>
> Why?
Allwinner didn't document this, but if the SRAM is not claimed, the
DE2 MMIO zone is totally not accessible.
It seems that Allwinner uses the SRAM C in the DE2 internally.
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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next prev parent reply other threads:[~2017-10-16 9:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-14 12:29 [PATCH 1/2] dt-bindings: add binding for A64 DE2 CCU with SRAM section Icenowy Zheng
2017-10-14 12:29 ` [PATCH 2/2] clk: sunxi-ng: add support for Allwinner A64 DE2 CCU Icenowy Zheng
[not found] ` <20171014122925.13220-1-icenowy-h8G6r0blFSE@public.gmane.org>
2017-10-16 9:11 ` [PATCH 1/2] dt-bindings: add binding for A64 DE2 CCU with SRAM section Maxime Ripard
[not found] ` <20171016091136.b4rnckh2tfi26shx-ZC1Zs529Oq4@public.gmane.org>
2017-10-16 9:41 ` icenowy-h8G6r0blFSE [this message]
[not found] ` <d62ac8b8ff9073b886ceaa9ce54e6903-h8G6r0blFSE@public.gmane.org>
2017-10-16 12:09 ` Maxime Ripard
[not found] ` <20171016120912.lxu7rikhffxsu5o4-ZC1Zs529Oq4@public.gmane.org>
2017-10-27 14:33 ` icenowy-h8G6r0blFSE
[not found] ` <b8c770bdc7a0541b8d1179598d814b75-h8G6r0blFSE@public.gmane.org>
2017-10-27 15:13 ` Maxime Ripard
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