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

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Date:   Tue, 9 Mar 2021 20:55:47 +0530
From:   Aswath Govindraju <a-govindraju@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>
CC:     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

Hi Nishanth,

On 09/03/21 8:24 pm, Nishanth Menon wrote:
> 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.
> 

ok, I'll post a respin after dropping this dependency and picking up the
reviewed by.

Thanks,
Aswath

>>>
>>>  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>;
>>>
>