linux-kernel - Re: [PATCH v2 1/3] arm64: dts: ti: Add GPMC support for AM62x LP SK

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Date:   Wed, 4 Oct 2023 07:07:49 -0500
From:   Nishanth Menon <nm@...com>
To:     Roger Quadros <rogerq@...com>
CC:     Nitin Yadav <n-yadav@...com>, <vigneshr@...com>,
        <kristo@...nel.org>, <robh+dt@...nel.org>, <conor+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <catalin.marinas@....com>,
        <will@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/3] arm64: dts: ti: Add GPMC support for AM62x LP SK

On 14:27-20231004, Roger Quadros wrote:
> 
> 
> On 4.10.2023 14.12, Nitin Yadav wrote:
> > Add gpmc0 and elm0 nodes in k3-am62-main. Add GPMC0_CFG and
> > GPMC0_DATA entry in cbass_main node.
> > 
> > Signed-off-by: Nitin Yadav <n-yadav@...com>
> > ---
> >   arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 29 ++++++++++++++++++++++++
> >   arch/arm64/boot/dts/ti/k3-am62.dtsi      |  2 ++
> >   2 files changed, 31 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> > index ac760d9b831d..f854369dfc27 100644
> > --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> > +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> > @@ -965,4 +965,33 @@ mcasp2: audio-controller@...0000 {
> >   		power-domains = <&k3_pds 192 TI_SCI_PD_EXCLUSIVE>;
> >   		status = "disabled";
> >   	};
> 
> Please add blank line here.
> 
> > +	gpmc0: memory-controller@...00000 {
> > +		compatible = "ti,am64-gpmc";
> > +		reg = <0x00 0x03b000000 0x00 0x400>,
> > +		      <0x00 0x050000000 0x00 0x8000000>;
> > +		reg-names = "cfg", "data";
> > +		interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
> > +		clocks = <&k3_clks 80 0>;
> > +		clock-names = "fck";
> > +		power-domains = <&k3_pds 80 TI_SCI_PD_EXCLUSIVE>;
> > +		gpmc,num-cs = <3>;
> > +		gpmc,num-waitpins = <2>;
> > +		#address-cells = <2>;
> > +		#size-cells = <1>;
> > +		interrupt-controller;
> > +		#interrupt-cells = <2>;
> > +		gpio-controller;
> > +		#gpio-cells = <2>;
> > +		status = "disabled";

Document why disabled by default.

> > +	};
> > +
> > +	elm0: ecc@...10000 {
> > +		compatible = "ti,am3352-elm";
> > +		reg = <0x00 0x25010000 0x00 0x2000>;
> > +		interrupts = <GIC_SPI 132 IRQ_TYPE_LEVEL_HIGH>;
> > +		clocks = <&k3_clks 54 0>;
> > +		clock-names = "fck";
> > +		power-domains = <&k3_pds 54 TI_SCI_PD_EXCLUSIVE>;
> > +		status = "disabled";

Document why disabled by default.

> > +	};
> >   };
> > diff --git a/arch/arm64/boot/dts/ti/k3-am62.dtsi b/arch/arm64/boot/dts/ti/k3-am62.dtsi
> > index f1e15206e1ce..b9b1e522d74c 100644
> > --- a/arch/arm64/boot/dts/ti/k3-am62.dtsi
> > +++ b/arch/arm64/boot/dts/ti/k3-am62.dtsi
> > @@ -77,6 +77,8 @@ cbass_main: bus@...00 {
> >   			 <0x00 0x70000000 0x00 0x70000000 0x00 0x00010000>, /* OCSRAM */
> >   			 <0x01 0x00000000 0x01 0x00000000 0x00 0x00310000>, /* A53 PERIPHBASE */
> >   			 <0x05 0x00000000 0x05 0x00000000 0x01 0x00000000>, /* FSS0 DAT3 */
> > +			 <0x00 0x3b000000 0x00 0x3b000000 0x00 0x00000400>, /* GPMC0 CFG */
> > +			 <0x00 0x50000000 0x00 0x50000000 0x00 0x08000000>, /* GPMC0 DATA */
> >   			 /* MCU Domain Range */
> >   			 <0x00 0x04000000 0x00 0x04000000 0x00 0x01ff1400>,
> 
> -- 
> cheers,
> -roger

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D