linux-kernel - Re: [PATCH v3 1/4] dt-bindings: soc: samsung: usi: replace USI_V2 in constants with USI

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Message-ID: <lvi72dmucagm6cxotqxmvc2yjdin3dvumivrfxjcsth2djaf54@n3i36ul3zkvl>
Date: Mon, 6 Jan 2025 07:24:18 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
Cc: Rob Herring <robh@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Alim Akhtar <alim.akhtar@...sung.com>, Sam Protsenko <semen.protsenko@...aro.org>, 
	Peter Griffin <peter.griffin@...aro.org>, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/4] dt-bindings: soc: samsung: usi: replace USI_V2 in
 constants with USI_MODE

On Sun, Jan 05, 2025 at 06:03:43PM +0200, Ivaylo Ivanov wrote:
> diff --git a/include/dt-bindings/soc/samsung,exynos-usi.h b/include/dt-bindings/soc/samsung,exynos-usi.h
> index a01af169d..b7c1406f3 100644
> --- a/include/dt-bindings/soc/samsung,exynos-usi.h
> +++ b/include/dt-bindings/soc/samsung,exynos-usi.h
> @@ -9,9 +9,9 @@
>  #ifndef __DT_BINDINGS_SAMSUNG_EXYNOS_USI_H
>  #define __DT_BINDINGS_SAMSUNG_EXYNOS_USI_H
>  
> -#define USI_V2_NONE		0
> -#define USI_V2_UART		1
> -#define USI_V2_SPI		2
> -#define USI_V2_I2C		3
> +#define USI_MODE_NONE		0
> +#define USI_MODE_UART		1
> +#define USI_MODE_SPI		2
> +#define USI_MODE_I2C		3

This breaks ABI and does not build. You still need also:
	#define USI_V2_NONE 		USI_MODE_NONE
and same for the rest.

Best regards,
Krzysztof