linux-kernel - [PATCH 8/8] spi: Make SPI_S3C64XX=y impossible when EXYNOS_USI

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Date:   Sun, 28 Nov 2021 00:32:53 +0200
From:   Sam Protsenko <semen.protsenko@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Jaewon Kim <jaewon02.kim@...sung.com>,
        Chanho Park <chanho61.park@...sung.com>,
        David Virag <virag.david003@...il.com>,
        Youngmin Nam <youngmin.nam@...sung.com>,
        devicetree@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-i2c@...r.kernel.org
Subject: [PATCH 8/8] spi: Make SPI_S3C64XX=y impossible when EXYNOS_USI_V2=m

When S3C64XX SPI is encapsulated in USIv2 block (e.g. in Exynos850),
USIv2 driver must be loaded first, as it's preparing USI hardware for
particular protocol use. Make it impossible for spi-s3c64xx driver to be
built-in when USIv2 driver is built as a module, to prevent incorrect
booting order for those drivers.

Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>
---
 drivers/spi/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index b2a8821971e1..fbdf901248be 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -761,6 +761,7 @@ config SPI_S3C24XX_FIQ
 config SPI_S3C64XX
 	tristate "Samsung S3C64XX/Exynos SoC series type SPI"
 	depends on (PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST)
+	depends on EXYNOS_USI_V2 || !EXYNOS_USI_V2
 	help
 	  SPI driver for Samsung S3C64XX, S5Pv210 and Exynos SoCs.
 	  Choose Y/M here only if you build for such Samsung SoC.
-- 
2.30.2