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

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Message-ID: <000d01d188f1$b150e660$13f2b320$@codeaurora.org>
Date:	Mon, 28 Mar 2016 18:29:32 +0530
From:	"Sricharan" <sricharan@...eaurora.org>
To:	"'Andy Gross'" <andy.gross@...aro.org>,
	"'Bjorn Andersson'" <bjorn@...o.se>
Cc:	<devicetree@...r.kernel.org>,
	"'Archit Taneja'" <architt@...eaurora.org>,
	"'Wolfram Sang'" <wsa@...-dreams.de>,
	"'linux-arm-msm'" <linux-arm-msm@...r.kernel.org>,
	<ntelkar@...eaurora.org>, "'Kumar Gala'" <galak@...eaurora.org>,
	<linux-kernel@...r.kernel.org>, <linux-i2c@...r.kernel.org>,
	"'Ivan T. Ivanov'" <iivanov@...sol.com>,
	"'Andy Gross'" <agross@...eaurora.org>,
	<dmaengine@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.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.

 Hmm, this was not the case atleast on the apq8074DB board that I tested
this on.

Regards,
 Sricharan