linux-kernel - Re: [PATCH V7 5/6] dts: msm8974: Add blsp2

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Date:	Fri, 25 Mar 2016 21:26:12 -0500
From:	Andy Gross <andy.gross@...aro.org>
To:	Bjorn Andersson <bjorn@...o.se>
Cc:	Sricharan R <sricharan@...eaurora.org>,
	Wolfram Sang <wsa@...-dreams.de>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	Andy Gross <agross@...eaurora.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
	"Ivan T. Ivanov" <iivanov@...sol.com>,
	Kumar Gala <galak@...eaurora.org>, dmaengine@...r.kernel.org,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>, ntelkar@...eaurora.org,
	Archit Taneja <architt@...eaurora.org>
Subject: Re: [PATCH V7 5/6] dts: msm8974: Add blsp2_bam dma node

On Fri, Mar 25, 2016 at 04:17:30PM -0700, Bjorn Andersson wrote:
> On Tue, Jan 19, 2016 at 2:02 AM, Sricharan R <sricharan@...eaurora.org> wrote:
> > Signed-off-by: Sricharan R <sricharan@...eaurora.org>
> > Reviewed-by: Andy Gross <andy.gross@...aro.org>

<snip>

> > +               blsp2_dma: dma-controller@...44000 {
> > +                       compatible = "qcom,bam-v1.4.0";
> > +                       reg = <0xf9944000 0x19000>;
> > +                       interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_HIGH>;
> > +                       clocks = <&gcc GCC_BLSP2_AHB_CLK>;
> > +                       clock-names = "bam_clk";
> > +                       #dma-cells = <1>;
> > +                       qcom,ee = <0>;
> 
> Without "qcom,bam_ctrl_remote;" and
> https://patchwork.kernel.org/patch/8639181/ the Xperia Honami board
> fails to boot with this patch included.

Ouch.  At least one set of pipes must be used by some other processor and TZ has
locked down that BLSP.