linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am62d2-evm: Remove unused ospi0 chip select pins

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Message-ID: <19b8774a-86a3-4948-98f2-093df99a2a77@ti.com>
Date: Wed, 29 Oct 2025 09:06:26 -0500
From: Andrew Davis <afd@...com>
To: Paresh Bhagat <p-bhagat@...com>, <nm@...com>, <vigneshr@...com>,
	<praneeth@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<khasim@...com>, <v-singh1@...com>, <bb@...com>, <s-k6@...com>
Subject: Re: [PATCH] arm64: dts: ti: k3-am62d2-evm: Remove unused ospi0 chip
 select pins

On 10/28/25 10:21 PM, Paresh Bhagat wrote:
> Since only a single flash device is connected to ospi0 retain only the
> OSPI0_CSn0 pin configuration and remove the unused CSn1-CSn3 pins from
> the default pinctrl. This simplifies the ospi0 pin configuration without
> affecting functionality.
> 
> Signed-off-by: Paresh Bhagat <p-bhagat@...com>
> ---

Reviewed-by: Andrew Davis <afd@...com>

> Boot logs
> https://gist.github.com/paresh-bhagat12/ac3b7e8a39f6f35004d9c51c6384f0c4
> 
> Datasheet - https://www.ti.com/lit/ug/sprujd4/sprujd4.pdf
> Schematics - https://www.ti.com/lit/zip/sprcal5
> 
>   arch/arm64/boot/dts/ti/k3-am62d2-evm.dts | 3 ---
>   1 file changed, 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
> index 83af889e790a..bb5af52ae8b7 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
> @@ -355,9 +355,6 @@ ospi0_pins_default: ospi0-default-pins {
>   		pinctrl-single,pins = <
>   			AM62DX_IOPAD(0x0000, PIN_OUTPUT, 0) /* (L22) OSPI0_CLK */
>   			AM62DX_IOPAD(0x002c, PIN_OUTPUT, 0) /* (H21) OSPI0_CSn0 */
> -			AM62DX_IOPAD(0x0030, PIN_OUTPUT, 0) /* (G19) OSPI0_CSn1 */
> -			AM62DX_IOPAD(0x0034, PIN_OUTPUT, 0) /* (K20) OSPI0_CSn2 */
> -			AM62DX_IOPAD(0x0038, PIN_OUTPUT, 0) /* (G20) OSPI0_CSn3 */
>   			AM62DX_IOPAD(0x000c, PIN_INPUT, 0) /* (J21) OSPI0_D0 */
>   			AM62DX_IOPAD(0x0010, PIN_INPUT, 0) /* (J18) OSPI0_D1 */
>   			AM62DX_IOPAD(0x0014, PIN_INPUT, 0) /* (J19) OSPI0_D2 */