linux-kernel - Re: [PATCH v5 4/5] ARM: dts: at91: sama5d2: add nodes for I2S controllers

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Message-ID: <20180716141504.GB3180@piout.net>
Date:   Mon, 16 Jul 2018 16:15:04 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        alsa-devel@...a-project.org, nicolas.ferre@...rochip.com,
        boris.brezillon@...tlin.com, robh+dt@...nel.org,
        broonie@...nel.org, sboyd@...nel.org,
        Cristian.Birsan@...rochip.com,
        Cyrille Pitchen <cyrille.pitchen@...el.com>
Subject: Re: [PATCH v5 4/5] ARM: dts: at91: sama5d2: add nodes for I2S
 controllers

Hello,

On 09/07/2018 16:29:43+0300, Codrin Ciubotariu wrote:
> On 06.07.2018 22:39, Alexandre Belloni wrote:
> > Hi Codrin,
> > 
> > On 18/06/2018 17:12:38+0300, Codrin Ciubotariu wrote:
> > > From: Cyrille Pitchen <cyrille.pitchen@...el.com>
> > > 
> > > This patch adds DT nodes for I2S0 and I2S1. It also adds an alias for
> > > each I2S node.
> > > 
> > > Signed-off-by: Cyrille Pitchen <cyrille.pitchen@...el.com>
> > > [codrin.ciubotariu@...rochip.com: added phandle to new mux clock]
> > > Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
> > > ---
> > > 
> > > The bindings for the I2S node are applied to broonie/sound.git .
> > > 
> > > Changes in v5:
> > > 	- the previous name was:
> > > 	  [PATCH v4 6/7] ARM: dts: at91: sama5d2: add nodes for I2S controllers
> > > 
> > >   arch/arm/boot/dts/sama5d2.dtsi | 34 ++++++++++++++++++++++++++++++++++
> > >   1 file changed, 34 insertions(+)
> > > 
> > > diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
> > > index eeb6afa1cda7..eca73ce40bc5 100644
> > > --- a/arch/arm/boot/dts/sama5d2.dtsi
> > > +++ b/arch/arm/boot/dts/sama5d2.dtsi
> > > @@ -58,6 +58,8 @@
> > >   		serial1 = &uart3;
> > >   		tcb0 = &tcb0;
> > >   		tcb1 = &tcb1;
> > > +		i2s0 = &i2s0;
> > > +		i2s1 = &i2s1;
> > >   	};
> > >   	cpus {
> > > @@ -1313,6 +1315,22 @@
> > >   				clocks = <&clk32k>;
> > >   			};
> > > +			i2s0: i2s@...50000 {
> > > +				compatible = "atmel,sama5d2-i2s";
> > > +				reg = <0xf8050000 0x100>;
> > > +				interrupts = <54 IRQ_TYPE_LEVEL_HIGH 7>;
> > > +				dmas = <&dma0
> > > +					(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
> > > +					 AT91_XDMAC_DT_PERID(31))>,
> > > +				       <&dma0
> > > +					(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
> > > +					 AT91_XDMAC_DT_PERID(32))>;
> > > +				dma-names = "tx", "rx";
> > > +				clocks = <&i2s0_clk>, <&i2s0_gclk>, <&audio_pll_pmc>, <&i2s0muxck>;
> > > +				clock-names = "pclk", "gclk", "aclk", "muxclk";
> > > +				status = "disabled";
> > > +			};
> > > +
> > 
> > Can you resend the DTS patches after removing the unnecessary clocks?
> 
> I will. Should I also make the "muxclk" clock an assigned clock to assign
> its parent ?
> 

It would be better if that allows to remove the corresponding code in
the driver.


-- 
Alexandre Belloni, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com