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

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Message-ID: <c06a39c5-88eb-1e6d-4ae2-796981db1e71@ti.com>
Date:   Tue, 9 Mar 2021 20:18:24 +0530
From:   Vignesh Raghavendra <vigneshr@...com>
To:     Aswath Govindraju <a-govindraju@...com>
CC:     Lokesh Vutla <lokeshvutla@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Nishanth Menon <nm@...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 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/
> 
>  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>;
>