linux-kernel - Re: [PATCH 7/7] dts: hi6220: Add k3-dma and i2s/hdmi audio support

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Date:	Sat, 16 Jul 2016 12:48:58 +0100
From:	Mark Brown <broonie@...nel.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Zhangfei Gao <zhangfei.gao@...aro.org>,
	Jingoo Han <jg1.han@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>, Wei Xu <xuwei5@...ilicon.com>,
	Rob Herring <robh+dt@...nel.org>,
	Andy Green <andy@...mcat.com>,
	Dave Long <dave.long@...aro.org>,
	Guodong Xu <guodong.xu@...aro.org>
Subject: Re: [PATCH 7/7] dts: hi6220: Add k3-dma and i2s/hdmi audio support

On Fri, Jul 15, 2016 at 07:13:27PM -0700, John Stultz wrote:

> Add entry for k3-dma driver and i2s/hdmi audio devices.

> This enables HDMI audio output.

These bindings appear to be undocumented.  All new bindings require
documentation.

> +		i2s0: hi6210_i2s {
> +			compatible = "hisilicon,hi6210-i2s";
> +			reg = <0x0 0xf7118000 0x0 0x8000>, /* i2s unit */
> +			      <0x0 0xf7030000 0x0 0x400>,  /* syscon */
> +			      <0x0 0xf7032000 0x0 0x400>;  /* pmctrl */

Some of this looks like we should be using a system controller binding
rather than listing the system controller directly here.  The magic
number indexing for the resources is also not good, we should be using
reg-names to get name based lookups (I had been going to query that on
the binding document when I failed to find it...).

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