linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am642-evm: Add support for SPI EEPROM

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Date:   Tue, 9 Mar 2021 08:54:26 -0600
From:   Nishanth Menon <nm@...com>
To:     Vignesh Raghavendra <vigneshr@...com>
CC:     Aswath Govindraju <a-govindraju@...com>,
        Lokesh Vutla <lokeshvutla@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: ti: k3-am642-evm: Add support for SPI EEPROM

On 20:18-20210309, Vignesh Raghavendra wrote:
> 
> 
> On 3/1/21 11:35 AM, Aswath Govindraju wrote:
> > Add pinmux details and device tree node for the EEPROM attached to SPI0
> > module in main domain.
> > 
> > Signed-off-by: Aswath Govindraju <a-govindraju@...com>
> > ---
> 
> Reviewed-by: Vignesh Raghavendra <vigneshr@...com>
> 
> Regards
> Vignesh
> 
> > 
> > This patch depends on,
> > https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210301055109.17626-3-a-govindraju@ti.com/


Can you drop this dependency and rebase on top of my -next branch or
linux-next ? I am not able to apply the patch directly and would like to
avoid hand modifying the patch.

> > 
> >  arch/arm64/boot/dts/ti/k3-am642-evm.dts | 22 ++++++++++++++++++++++
> >  1 file changed, 22 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> > index bfd849a29655..bc5bd7f896ab 100644
> > --- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> > +++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> > @@ -139,6 +139,15 @@
> >  			AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (E19) USB0_DRVVBUS */
> >  		>;
> >  	};
> > +
> > +	main_spi0_pins_default: main-spi0-pins-default {
> > +		pinctrl-single,pins = <
> > +			AM64X_IOPAD(0x0210, PIN_INPUT, 0) /* (D13) SPI0_CLK */
> > +			AM64X_IOPAD(0x0208, PIN_OUTPUT, 0) /* (D12) SPI0_CS0 */
> > +			AM64X_IOPAD(0x0214, PIN_OUTPUT, 0) /* (A13) SPI0_D0 */
> > +			AM64X_IOPAD(0x0218, PIN_INPUT, 0) /* (A14) SPI0_D1 */
> > +		>;
> > +	};
> >  };
> >  
> >  &main_uart0 {
> > @@ -245,6 +254,19 @@
> >  	pinctrl-0 = <&main_usb0_pins_default>;
> >  };
> >  
> > +&main_spi0 {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&main_spi0_pins_default>;
> > +	ti,pindir-d0-out-d1-in = <1>;
> > +	eeprom@0 {
> > +		compatible = "microchip,93lc46b";
> > +		reg = <0>;
> > +		spi-max-frequency = <1000000>;
> > +		spi-cs-high;
> > +		data-size = <16>;
> > +	};
> > +};
> > +
> >  &sdhci0 {
> >  	/* emmc */
> >  	bus-width = <8>;
> > 

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